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Relevant bibliographies by topics / Halogen compounds

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Academic literature on the topic 'Halogen compounds'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 June 2025

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Journal articles on the topic "Halogen compounds"

1

Cavallo, Gabriella, Jane S. Murray, Peter Politzer, Tullio Pilati, Maurizio Ursini, and Giuseppe Resnati. "Halogen bonding in hypervalent iodine and bromine derivatives: halonium salts." IUCrJ 4, no. 4 (2017): 411–19. http://dx.doi.org/10.1107/s2052252517004262.

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Halogen bonds have been identified in a series of ionic compounds involving bromonium and iodonium cations and several different anions, some also containing hypervalent atoms. The hypervalent bromine and iodine atoms in the examined compounds are found to have positive σ-holes on the extensions of their covalent bonds, while the hypervalent atoms in the anions have negative σ-holes. The positive σ-holes on the halogens of the studied halonium salts determine the linearity of the short contacts between the halogen and neutral or anionic electron donors, as usual in halogen bonds.

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Magaji, Amayindi, Yakubu Joel, Yakubu Onimisi Jimoh, and Dorcas Kaduna Rubiyamisumma. "Interstellar Halogen and Biochemical Application of Halogen Bond in Living System." medtigo Journal of Pharmacology 2, no. 2 (2025): e3061221. https://doi.org/10.63096/medtigo3061221.

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Certain class of compound that consist of one halogen (F, Cl, Br, I or At) linked directly to a carbon atom, they are generally known as organo-halogens, they are present on the earth in abundance because they are largely manufactured through biological and industrial courses. Therefore, they have been suggested as bio-signature in the quest for life in the interstellar space. Less complex halogen hydrides had been identified in comets and astrochemical sources, nevertheless the occurrence and conceivable incorporation of advanced complex halides comprising compounds such as organo-halogens into planet developing or manufacturing region is undefined. This paper reviews the contribution of halogen bonding in biological systems and explores its potential applications in pharmacology, biomaterial development, and novel motifs for nucleic acids and protein engineering.

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Poynder, Tiffany B., Dharmeshkumar P. Savaliya, Andrew Molino, David J. D. Wilson, and Jason L. Dutton. "Elimination of Ethene from 1,2-Diiodoethane Induced by N-Heterocyclic Carbene Halogen Bonding." Australian Journal of Chemistry 72, no. 8 (2019): 614. http://dx.doi.org/10.1071/ch19237.

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The attempted synthesis of N-heterocyclic carbene (NHC)-stabilised dicarbon (C2) fragments via nucleophilic substitution at 1,2-diiodoethane is reported. Rather than the expected SN2 pathway, clean elimination of ethene and formation of an iodoimidazolium cation was observed. The resistance towards nucleophilic substitution piqued interest, and subsequent investigation determined NHC-halogen bonding as the source. This is in contrast to reactions between NHCs and other alkyl halides, where substitution or elimination pathways are reported. A detailed theoretical study between these cases highlights the importance of iodine as a halogen bond donor compared with other halogens, and shows that NHCs are excellent halogen bond acceptors. This reactivity suggests potential for application of the halogen bonding interaction between NHCs and organic compounds.

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Matsuo, Kazuki, Tadashi Yoshitake, Eiji Yamaguchi та Akichika Itoh. "Photoinduced Atom Transfer Radical Addition/Cyclization Reaction between Alkynes or Alkenes with Unsaturated α-Halogenated Carbonyls". Molecules 26, № 22 (2021): 6781. http://dx.doi.org/10.3390/molecules26226781.

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We have developed a photochemical ATRA/ATRC reaction that is mediated by halogen bonding interactions. This reaction is caused by the reaction of malonic acid ester derivatives containing bromine or iodine with unsaturated compounds such as alkenes and alkynes in the presence of diisopropylethylamine under visible light irradiation. As a result of various control experiments, it was found that the formation of complexes between amines and halogens by halogen-bonding interaction occurs in the reaction system, followed by the cleavage of the carbon–halogen bonds by visible light, resulting in the formation of carbon radicals. In this reaction, a variety of substrates can be used, and the products, cyclopentenes and cyclopentanes, were obtained by intermolecular addition and intramolecular cyclization.

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5

Dohi, Toshifumi. "Recent Topics in Organohalogen Reagents and Compounds." Current Organic Chemistry 24, no. 18 (2020): 2029–30. http://dx.doi.org/10.2174/138527282418201106141610.

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This Special Issue covers the hot topics on recent synthetic interest in halogen and related chemistry as well as the unique characteristics of halogen compounds. The excellent reviews by the experts and eminent researchers engaged in the recent advances, i.e., preparations, reactions, and mechanistic studies of unique organohalogen compounds, halogen bond interaction as the catalysis, and halogen-controlled unique reactions for synthesizing useful organic molecules, such as pharmaceutical compounds and organic materials, are provided in this Special Issue.

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6

Parlak, Cemal, Mahir Tursun, Chandraju Sadolalu Chidan Kumar, et al. "Halogen and solvent effects on the conformational, vibrational and electronic properties of 1,4-diformylpiperazine: A combined experimental and DFT study." Journal of Theoretical and Computational Chemistry 14, no. 07 (2015): 1550050. http://dx.doi.org/10.1142/s0219633615500509.

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The molecular structure and properties of 1,4-diformylpiperazine (1,4-dfp, C6H[Formula: see text]N2O2) were investigated by Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy and density functional theory (DFT). The Becke-3-Lee–Yang–Parr (B3LYP) functional was used with the 6-31[Formula: see text]G(d,p) basis set. Total energy distribution (TED) analysis of normal modes was performed to identify characteristic frequencies by the scaled quantum mechanical (SQM) method. Halogeno-analogs of 1,4-dfp were studied to understand the halogen effect. Computations were focused on five conformational isomers of the compounds in the gas phase and in solutions. The computed and experimental frequencies of the C[Formula: see text]O stretching vibration of 1,4-dfp were correlated with the empirical solvent parameters such as the Kirkwood–Bauer–Magat (KBM) equation, the solvent acceptor number (AN), Swain parameters and linear solvation energy relationships (LSER). The electronic properties of the compounds were also examined. The findings from the present work may be useful to understand systems involving the halogens and conformational changes analogous to the compounds investigated.

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Nikitin, Igor V. "Oxygen compounds of halogens X2O2(X is a halogen atom)." Russian Chemical Reviews 71, no. 2 (2002): 85–97. http://dx.doi.org/10.1070/rc2002v071n02abeh000684.

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Rossi, Laura I., and Manuel I. Velasco. "Alternatives to free molecular halogens as chemoselective reactants: Catalysis of organic reactions with reusable complexes of halogen metal salts." Pure and Applied Chemistry 84, no. 3 (2012): 819–26. http://dx.doi.org/10.1351/pac-con-11-07-13.

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Organometallic complexes of halogen metallic salts have been used as catalysts in different organic reactions, mainly the oxidation of organic compounds. Their use has not only allowed the reduction of the amounts of catalyst (since they can be reused) but also a lower generation of byproducts and wastes. The different reaction media developed through the research were analyzed by several green parameters, and the best results were obtained with complexes that have cyclodextrins as organic ligands. The proposed methodology is an alternative to use of molecular halogen as oxidant or catalyst when halogens are significant chemoselective reactants.

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China, Hideyasu, Ravi Kumar, Kotaro Kikushima, and Toshifumi Dohi. "Halogen-Induced Controllable Cyclizations as Diverse Heterocycle Synthetic Strategy." Molecules 25, no. 24 (2020): 6007. http://dx.doi.org/10.3390/molecules25246007.

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In organic synthesis, due to their high electrophilicity and leaving group properties, halogens play pivotal roles in the activation and structural derivations of organic compounds. Recently, cyclizations induced by halogen groups that allow the production of diverse targets and the structural reorganization of organic molecules have attracted significant attention from synthetic chemists. Electrophilic halogen atoms activate unsaturated and saturated hydrocarbon moieties by generating halonium intermediates, followed by the attack of carbon-containing, nitrogen-containing, oxygen-containing, and sulfur-containing nucleophiles to give highly functionalized carbocycles and heterocycles. New transformations of halogenated organic molecules that can control the formation and stereoselectivity of the products, according to the difference in the size and number of halogen atoms, have recently been discovered. These unique cyclizations may possibly be used as efficient synthetic strategies with future advances. In this review, innovative reactions controlled by halogen groups are discussed as a new concept in the field of organic synthesis.

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Gil, Aleksander, Zbigniew Żurek, Adam Stawiarski, and Jarosław Dąbek. "Improvement of Oxidation Resistance of TiAl-Nb Alloy by Dipping in F-Containing Resin." Advanced Materials Research 347-353 (October 2011): 3514–17. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.3514.

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Surface treatment of TiAl alloys by the small amounts of halogens leads to the formation of the protective alumina scale. The halogens can be applied by ion techniques as well as by spraying or dipping with halogen-containing compounds. In this work the results of the oxidation in air of a Ti-47Al-6Nb alloy dipped in a fluorine-containing resin were presented. The thermal cycling runs were carried out in the temperature 900°C.

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Dissertations / Theses on the topic "Halogen compounds"

1

Awwadi, Firas Fandi. "A crystallographic and theoretical study of halogen---halogen and halogen---halide synthons." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Dissertations/Summer2005/F%5FAwwadi%5F072705.pdf.

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Huang, Jinqing, and 黃普卿. "A study of the reaction mechanisms and reactive intermediates involved in halogenated compounds : trichloroethylene oxide, halogenated benzophenones, and halogenated quinoline-based phototriggers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/208036.

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UV/Vis absorption spectroscopy (UV/Vis), femtosecond transient absorption spectroscopy (fs-TA), nanosecond transient absorption spectroscopy (ns-TA), and nanosecond time-resolved resonance Raman spectroscopy (ns-TR3), as well as density functional theory (DFT) computations were employed to study the mechanisms and the intermediates in reactions of selected halogenated compounds, including trichloroethylene oxide (TCE oxide), halogenated benzophenones (4-FBP, 4-ClBP, 4-BrBP, 3-FBP, 33’-DFBP, 3-ClBP, 3-BrBP, 2-FBP, 2-ClBP, and 2-BrBP), and halogenated quinoline-based phototriggers (BHQ-OPh and BHQ-OAc). This study investigated the halogen substituent effect on the mechanisms of various water-involved reactions and the influences from the number of halogens present, the type of halogen and the substituent position of the halogen in the molecules of interest. The general mechanisms for the reactions of these halogenated compounds were summarized along with discussion of the driving forces from the substituted halogen. First, TCE oxide was hydrolyzed to release chloride ions one by one which led to a complicated water-catalyzed decomposition. To account for the dehalogenation and the formation of CO with three kinds of carboxylic acids (formic acid, glyoxylic acid, and dichloroacetic acid), the predominant decomposition pathways were examined by comparing the computed activation energies for the formation of different products. From these comparisons, the ring-opening reaction was identified as the rate-determining step, which is also supported by previous experimental observations reported in the literature. Based on all of these analyses, the mechanisms of the water-catalyzed decomposition reactions were determined and a water-assisted HCl elimination model has been proposed. Second, some halogen-substituted benzophenones demonstrated an efficiency for a photosubstitution reaction and the related photohydration reactions. Interestingly, the efficient photosubstitution reactions of 3-FBP and 33’-DFBP were dependent on the solution acidity and reached a maximum in 1 M HClO4 CH3CN/H2O (1/1) solution. Only the photohydration reaction took place for the 3-ClBP, 3-BrBP, 4-FBP, 4-ClBP, and 4-BrBP molecules. Nevertheless, no special photochemical reaction occurred for 2-FBP, 2-ClBP, and 2-BrBP. The mechanisms and intermediates were directly characterized by spectroscopic observations and rationalized by results from DFT computations. According to these results, the general mechanisms for the photosubstitution reaction and the related photohydration reactions of halogenated benzophenone derivatives were summarized. These results reveal that the efficiency in forming the corresponding hydroxy benzophenone is influenced by the solution acidity, substituent positions, and the character of the substituted halogens. The substituted halogen is the driving force of this photosubstitution reaction. This conclusion provides insight into several possible applications that are also briefly discussed in this thesis. Lastly, the BHQ-OPh system was found to undergo an extraordinary efficient excited-state proton transfer (ESPT) to initiate a dehalogenation reaction. The fs-TA and ns-TA spectra indicate clearly the interactions between four prototropic forms of BHQ-OPh, which were characterized by UV-Vis spectra under different pH values. These prototropic forms play important roles in inducing further dehalogenation, thus their structural configurations were also investigated by DFT computations. Besides, competing with the dehalogenation reaction, BHQ-OAc underwent another photodeprotection to release the OAc group. The comparison between BHQ-OPh and BHQ-OAc provides further information in understanding the mechanisms of dehalogenation reactions and photodeprotection reactions of these quinoline-based phototriggers.<br>published_or_final_version<br>Chemistry<br>Doctoral<br>Doctor of Philosophy

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Ding, Luying. "Kinetic Studies of the Reactions of Cl and Br with Silane and Trimethylsilane." Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc500233/.

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The temperature dependence of the reactions of halogen atoms Cl and Br with SiH4 and (CH3)3SiH have been investigated with the flash photolysis-resonance fluorescence technique. CCI4 and CH2Br2 were used as precursors to produce Cl and Br atoms, respectively. Experiments gave {k(Cl + SiH4) (295 - 472 K)} = (1.56 +0.11) x 10-1 exp[(2.0 + 0.2) kJ mol'/RT] cm3 s4, {k(Br + SiH4)(295 - 575 K)} = (9.0 + 1.5) x 10-" exp[-(17.0 + 0.6) Id mol'/RT] cm3 s', {k(Cl + (CH3)3SiH)(295 - 468 K)} = (1.24 0.35) x 104 exp[(1.3 + 0.8) Id mol4/RT] cm3 s', and {k(Br + (CH3)3SiH)(295 - 456 K)} = (7.6 + 3.3) x 1010 exp[-(28.4 + 1.3) Id mol'/RT] cm3 s'. The results were compared with values from earlier work.

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4

Liao, Jin. "Bromine and chlorine chemistry in the Arctic boundary layer." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/45932.

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Halogen chemistry plays an important role in spring time ozone and mercury depletion events (ODEs and MDEs) and may efficiently oxidize hydrocarbons such as the important greenhouse gas methane (CH4) in the polar marine boundary layer. This thesis presents a detailed study of bromine and chlorine chemistry in the Arctic boundary layer based on measurements of bromine and chlorine containing species using chemical ionization mass spectrometry (CIMS). The capability of CIMS to accurately measure bromine oxide (BrO) was demonstrated. The first direct measurements of hypobromous acid (HOBr) were achieved. Conditions that likely favor bromine activation (e.g. high wind speeds) was presented. To advance the understanding of bromine recycling, a time dependent model was built to simulate the bromine speciation. Unexpected high levels of molecular chlorine (Cl2) were observed at Barrow, AK, which had a large impact on methane oxidation and could contribute to ozone loss and mercury oxidation at Barrow, AK. Moreover, BrO levels observed at Summit, Greenland did not explain the under prediction of hydroxyl radical (OH). However, the enhanced OH was found to be coincident with elevated reactive gaseous mercury (RGM). In addition, airborne BrO measurements were found to be generally consistent with airborne observations of soluble bromide based on the response factors of mist chamber to the bromine species and bromine chemical mechanisms.

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5

Roddis, Tristan. "A laboratory investigation of the heterogeneous reactions of atmospheric halogen and nitrogen compounds." Thesis, University of East Anglia, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266730.

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6

Khan, Rana. "Structural studies of halogen, interhalogen and pseudohalogen compounds of phosphorus, selenium and tellurium." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/structural-studies-of-halogen-interhalogen-and-pseudohalogen-compounds-of-phosphorus-selenium-and-tellurium(b1ba6ec9-198c-4de5-be73-f136a4db3ee0).html.

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A series of compounds with the general formula R3PX2 and R3PX4 (where R = o-tolyl, m-tolyl, p-tolyl, o-anisyl, m-anisyl, p-anisyl, o-thioanisyl, p-thioanisyl, p-fluorophenyl, p-chlorophenyl, mesityl and X = Cl, Br, I) have been synthesised and studied by X-ray crystallography, multinuclear NMR spectroscopy and Raman spectroscopy. A study of the conformational features of the aryl groups in these structures was undertaken in order to investigate the role of steric effects and crystal packing on P-X and X-X bond lengths. Compounds with the general formula RSeX / RSeX3 (where R = p-fluorophenyl, p-chlorophenyl, p-bromophenyl, p-iodophenyl and X = Cl, Br, I) have been synthesised by reacting the diselenides with halogens in the stoichiometric ratios. The X-ray crystal structure of p-ClC₆H₄SeI.I₂ is the first crystallographically characterised example of a compound of stoichiometry RSeI₃, although it is better represented as an I₂ adduct of a Se(II) iodide than a Se(IV) compound. In contrast, (p-FC₆H₄)Se-Se(I)₂(p-FC₆H₄) is an I₂ adduct where the Se-Se bond has not been cleaved by iodine. Both structures are stabilised by weak Se...I and I...I interactions. p-FC₆H₄SeCl₃ is an example of a dimeric structure with bridging chlorines. [Ph₄PX] and Ph₃PX₂ were reacted with PhEX (where E = Se, Te and X = I, Br, Cl) to produce salts containing [PhEX₂]- and [PhEX₄] anions. Where possible all the products were then analysed via NMR and Raman spectroscopy and X-ray crystallography. The reactions of the ligand tris-p-fluorophenyl phosphine with sulfur and selenium are presented along with the subsequent reactions of these compounds with diiodine. All of the compounds are characterised via X-ray crystallography.

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Gilday, Lydia C. "Halogen- and hydrogen-bonding cyclic and interlocked hosts for anion recognition and sensing." Thesis, University of Oxford, 2013. https://ora.ox.ac.uk/objects/uuid:075af52f-996c-4092-80fc-da3d6ec97295.

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This thesis describes the synthesis of macrocyclic and interlocked receptors which exploit halogen- and hydrogen-bonding intermolecular interactions for anion recognition. <strong>Chapter One</strong> introduces the field of supramolecular chemistry, with particular focus on applications of hostâguest chemistry to anion coordination and anion templation in the construction of mechanically interlocked molecules. <strong>Chapter Two</strong> details the synthesis of a series of cyclic and cage-like porphyrin-based receptors which bind anions through halogen- and hydrogen-bonding interactions. The ability of these receptor systems to bind and sense anionic guest species is investigated and comparisons between hydrogen- and halogen-bonding are discussed. <strong>Chapter Three</strong> reports anion-templated pseudorotaxane assemblies stabilised by both halogen- and hydrogen-bonding. The related catenanes are also prepared and their affinity for anions is investigated. The first examples of interpenetrated and interlocked architectures constructed by a single charge-assisted halogen bond are also reported. <strong>Chapter Four</strong> describes the synthesis of a 1,3-dialkyl-1,2,3-triazolium-containing threading component, whose anion binding properties are studied and compared with other threading molecules. The ability of this novel thread to form pseudorotaxanes is investigated and the preparation of the related rotaxane species is outlined. <strong>Chapter Five</strong> discusses attempts to prepare rotaxanes with improved anion binding affinities through increasing the lipophilicity of the anion binding clefts. Several novel rotaxanes are described and their anion binding properties are probed. <strong>Chapter Six</strong> describes the experimental procedures used in this work and the characterisation of compounds presented in chapters two to five. <strong>Chapter Seven</strong> summarises the conclusions of this thesis.

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Bouchard, Alexandre. "Composés inter-halogènes sous pression: étude des transformations structurales dans le monobromure d’iode sous forme dense." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20697.

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La famille des composés halogènes et inter-halogènes représentent des solides moléculaires adoptant des phases denses communes avec des solides moléculaires diatomiques comme l’azote et l’hydrogène. Parmi les transformations structurales et électroniques induites sous haute pression et observées dans ces solides, on note, entre autres, la dissociation moléculaire et la métallisation. De plus, l’étude des phases denses de l’iode a permis récemment l’observation d’une structure cristalline possédant une modulation dite incommensurable, c’est-à-dire une modulation possédant une périodicité différente de celle de la structure cristalline, jetant ainsi une lumière nouvelle sur le processus de dissociation moléculaire dans les solides halogènes. Dans ce mémoire, on propose d’étudier les changements structuraux dans monobromure d’iode (IBr), un composé inter-halogène possédant des propriétés structurales semblables à celles de deux composés halogènes, soit l’iode (I2) et le brome (Br2) sous leur forme solide. Des expériences de diffraction des rayons X de poudres en utilisant un rayonnement synchrotron ont été réalisées à température ambiante sur l’IBr en variant la pression jusqu’aux environs de 60 GPa. La nature chimique particulière du composé IBr a nécessité la mise au point de techniques de chargement d’échantillon destinées à préserver l’intégrité chimique de la substance utilisée. On rapporte également l’observation d’une phase de l’IBr présentant une modulation incommensurable. Les phases observées dans l’IBr permettent d’établir des parallèles avec les phases denses rapportées dans I2 et Br2 par le biais d’un modèle phénoménologique décrivant la séquence structurale des solides halogènes sous forme condensée.

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Li, Yunliang, and 李運良. "Time-resolved resonance Raman and density functional theory investigations of selected isopolyhalomethanes, haloalkyl radicals andpolyhalomethane/halogen atom molecular complexes and their reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31245717.

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Langgaard, Kristensen Jesper. "Metalation, halogen-metal exchange and Pd(0) catalyzed cross-coupling reactions : application to the synthesis of substituted aromatic and heteroaromatic systems /." [Cph.] : Department of Medicinal Chemistry, Royal Danish School of Pharmacy, 2001. http://www.dfh.dk/phd/defences/previous2002.htm.

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Books on the topic "Halogen compounds"

1

Fabian, P., and Onkar N. Singh, eds. Reactive Halogen Compounds in the Atmosphere. Springer-Verlag, 1999. http://dx.doi.org/10.1007/10628761.

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International Symposium on Halogenated Environmental Organic Pollutants and POPs (20th 2000 Monterey, Calif.). Dioxin 2000: 20th International symposium on halogenated environmental organic pollutants and persistent organic pollutants (POPs), Monterey, California, USA. August 13-17, 2000. Edited by Denison Michael S and United States. Environmental Protection Agency. University of California, 2000.

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Mennekes, Theodor. Zur Reduktion von Dihalogenorganylboranen mit Alkalimetallen. Verlag Shaker, 1992.

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International Symposium on Halogenated Environmental Organic Pollutants and POPs (19th 1999 Venice, Italy). Dioxin 99: 19th International Symposium on Halogenated Environmental Organic Pollutants and POPs : September 12-17, 1999, Venice, Italy : [short papers]. International Symposium on Halogenated Environmental Organic Pollutants and POPs, 1999.

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International Symposium on Halogenated Environmental Organic Pollutants and POPs (23rd 2003 Boston, Mass.). Dioxin 2003: 23rd International Symposium on Halogenated Environmental Organic Pollutants and Persistent Organic Pollutants (POPs) : Boston, Massachusetts, USA, August 24-29, 2003. International Symposium on Halogenated Environmental Organic Pollutants and Persistent Organic Pollutants (POPs), 2003.

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R, Skaggs Stephanie, and National Institute of Standards and Technology (U.S.), eds. Screening methods for agent compatibility with people, materials, and the environment. U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1999.

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Dioxin, 2001 (2001 Kyŏngju-si Korea). Dioxin 2001: 21st International Symposium on Halogenated Environmental Organic Pollutants and Persistent Organic Pollutants (POPs), held 9-14 September 2001, Gyeongju, Korea. Dr. Jae-Ho Yang, Catholic University of Daegu, 2001.

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Antoon Jacob Berend ten Kate. Process development of thermal hydrodechlorination. Delft University Press, 1993.

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Luliński, Sergiusz. Otrzymywanie wybranych fluorowco- i cyjanopochodnych arylolitowych i ich zastosowanie w syntezie: Generation of selected halogen- and cyano-substituted aryllithiums and their application in synthesis. Oficyna Wydawnicza Politechniki Warszawskiej, 2010.

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Hall, K. R., ed. Vapor Pressure and Antoine Constants for Hydrocarbons, and S, Se, Te, and Halogen Containing Organic Compounds. Springer-Verlag, 1999. http://dx.doi.org/10.1007/b71086.

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Book chapters on the topic "Halogen compounds"

1

Kirk, P. W. W., and J. N. Lester. "Halogen compounds." In Handbook of Air Pollution Analysis. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4083-3_9.

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Went, C. "Halogen Compounds." In Work Out Organic Chemistry. Macmillan Education UK, 1988. http://dx.doi.org/10.1007/978-1-349-09726-5_5.

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Schmiermund, Torsten. "Organic Halogen Compounds." In The Chemistry Knowledge for Firefighters. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64423-2_45.

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James, B. D. "With Carbon-Halogen Compounds." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145180.ch3.

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Wuilloud, Rodolfo G., and Jorgelina C. Altamirano. "Speciation of Halogen Compounds." In Handbook of Elemental Speciation II - Species in the Environment, Food, Medicine and Occupational Health. John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470856009.ch2x.

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Paulus, Wilfried. "Compounds with Activated Halogen Groups." In Microbicides for the Protection of Materials. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2118-7_17.

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Nolan, Steven P. "Reactions of Halogen-Containing Compounds." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145296.ch207.

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Paulus, Wilfried. "Compounds with activated halogen atoms." In Directory of Microbicides for the Protection of Materials. Springer Netherlands, 2004. http://dx.doi.org/10.1007/1-4020-2818-0_40.

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Catalano, Luca, Gabriella Cavallo, Pierangelo Metrangolo, Giuseppe Resnati, and Giancarlo Terraneo. "Halogen Bonding in Hypervalent Iodine Compounds." In Hypervalent Iodine Chemistry. Springer International Publishing, 2016. http://dx.doi.org/10.1007/128_2015_666.

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Toscano, Paul J. "Reactions of Other Halogen-Containing Compounds." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145296.ch194.

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Conference papers on the topic "Halogen compounds"

1

May, Roger C., Longchun Cheng, and Feng Shao. "Second Generation, Halogen Resistant Copper Corrosion Inhibitors." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02413.

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Abstract Copper alloys are utilized in industrial cooling systems because of their excellent heat transfer properties. However, a corrosion inhibitor is needed to prevent equipment failures and, very importantly, to reduce the discharge of toxic copper compounds into the environment. Azoles, such as benzotriazole (BZT) and tolyltriazole (TTA), have been used for this purpose but they do not protect copper in the presence of oxidizing halogens which are commonly added to cooling systems to control microbiological activity. The halogens react with BZT and TTA and destroy their corrosion inhibiting properties. Recently, an azole derivative was discovered which was much less susceptible to degradation by oxidizing halogens. In the present paper, continuing work toward the development of improved copper corrosion inhibitors is discussed. Several new copper corrosion inhibitors have been discovered which are extremely resistant to reaction with chlorine. In simulated cooling water conditions, these inhibitors provide outstanding copper corrosion inhibition when chlorine is present. The improved copper protection eliminates pitting corrosion of mild steel, which is a consequence of the breakdown of copper protection in chlorinated, mixed metal systems. One of the compounds, 5-benzyl-benzotriazole, forms particularly stable films on copper. This material provides excellent film persistence when applied in a shot feed mode. Data are presented for both fresh water and sea water.

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Cheng, L., R. C. May, and K. M. Given. "A New Environmentally-Preferred Copper Corrosion Inhibitor." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99101.

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Abstract Copper and its alloys have excellent heat transfer properties and are widely used in industrial cooling water systems. A corrosion inhibitor, however, is needed to prevent equipment failures and to reduce the discharge of toxic copper compounds into the environment. Although azoles such as benzotriazole and tolyltriazole have been used to protect copper alloys from corrosion, they react with oxidizing halogens which are commonly used to control microbiological activity. Their reaction with chlorine, for example, produces species that are not protective to copper. The inhibitor films formed on copper also deteriorate in the presence of halogens, leading to high copper corrosion rates. A number of new azole derivatives have been discovered that provide superior copper protection in halogenated cooling water systems. A new halogen resistant azole (HRA) has been developed which has minimal reactivity with halogens and protects copper when chlorine is present. As a result, elimination of copper-induced pitting corrosion on mild steel was also achieved. This novel material has numerous environmental benefits. Laboratory and field results are presented.

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Ojong, Ojong Elias, Preniyobo Diepriye Benibo, Fidelis Ibiang Abam, and Silas Shamaye Samuel. "Enhancing Carbon (iv) Oxide Adsorption from Flue Gas Mixture at Elevated Temperature Using Composite of Nanoparticles." In Africa International Conference on Clean Energy and Energy Storage. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-3cwdqg.

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Chitosan/clay materials derived from periwinkle shells and clay soil at a 50:50 ratio were prepared as adsorbents, characterized, and used for the adsorption of CO2 from flue gas at elevated temperatures (500°C - 5000°C) in a fixed bed column (1.5 m in length and 0.02 m in internal diameter). The flue gas, with a composition of Methane (0.003), Ethane (0.002), Hydrogen (0.05), CO2 (0.15), Water Vapor (0.02), and Nitrogen (0.76), at a pressure of 49 KPa, a temperature of 5000°C, and a flow rate of 75 L/min from the exhaust tank, entered the fixed bed column for the adsorption process, where the adsorbent had already been placed. Fourier Transform Infrared spectroscopy revealed the presence of halogen, alcohol, nitro, and amine compounds in the nanoparticles, indicating a strong affinity for CO2 particles in the flue gas. Additional analysis showed the presence of elements (Ca, Si, Al, and Sr) in significant compositions (0.470, 0.202, 0.186, and 0.092, respectively), suggesting that the adsorbent was resistant to high temperatures. X-ray diffraction analysis of the adsorbent identified Ca(OH)₂, CaCO₃, and TiO₂ with compositions of 0.78, 0.19, and 0.026, respectively, further confirming the strong affinity of the adsorbent for CO2. Surface morphology analysis revealed that the adsorbent’s surface was rough and contained a variety of pores or holes with different capacities, indicating that more CO2 was captured and accommodated within the surface. Thermal analysis using the Barrett-Joyner-Halenda method showed that the adsorbent could withstand high temperatures of up to 9000°C. At this temperature, the adsorbent accounted for only about 18% of the material that entered the fixed bed column for adsorption, but 100% of it could remain active within the temperature range of 0°C - 3000°C. The characterization of the adsorbent showed that a pore width of 5.283 nm, a pore diameter of 2.64 nm, a micropore surface area of 434.7 m²/g, a pore volume of 0.202 cc/g, and a porosity of 56.73% were the optimal values for the adsorbent. Finally, it was revealed that 95% of CO2 was adsorbed at optimal conditions within the temperature range of 500°C - 3500°C, time range of 0.5 - 5 hours, and bed height range of 1 - 6 cm.

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Agarwal, D. C., and Michael Eckhardt. "Nickel Alloys and Newer Super-Austenitic Alloys Contributions in the CPI and Petrochemical Industries." In CORROSION 2006. NACE International, 2006. https://doi.org/10.5006/c2006-06233.

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Abstract In the CPI and petrochemical sectors basic raw materials, both organic and inorganic, are converted into products for use in other industries and/or direct use by consumers. The vast majority of chemicals are produced from a very limited number of simple chemicals which are derived from about ten raw materials. These are hydrocarbons (oil, natural gas, coal), minerals, rocks, salts, sulfur, phosphorus, air, water, inorganic acids and halogens. The first stage in the CPI/petrochemical industry is the conversion of the raw materials into base chemicals such as ethane, propane, butane, benzene, toluene, xylenes, synthesis gas, ammonia, methanol, sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, chlorine plus some other compounds. In the second stage of chemical operation, various elements such as oxygen, chlorine, sulfur etc. are introduced in the base chemicals to form chemical intermediates, which could number in 100’s of chemical compounds such as acetic acid, formaldehyde, acetaldehyde, and monomers like acrylonitrile, terephthalic acid etc. The third and final step consists of a series of operations to obtain consumer products such as plastics (PVC), synthetic fibers (polyesters, nylon-6), elastomers (polybutadiene), pesticides and insecticides, fertilizers(ammonium nitrate),vitamins, pharmaceuticals, detergents and others. In all these industrial operations, corrosion is an ever-present entity, 24 hours a day 7 days a week. Hence suitable materials of construction have to be selected to mitigate / minimize / control corrosion. Principal materials of construction typically are carbon & low alloy Cr-Mo steels, stainless steels (ferritic, austenitic, martensitic, precipitation hardened & duplex stainless steels), copper & aluminum alloys, nickel alloys, zirconium & titanium / titanium alloys. In very specific cases tantalum has also been used. Other corrosion mitigation technologies such as electrochemical protection (cathodic and anodic), non-metallics (polymers, ceramics), coatings and paints and use of inhibitor technology also play a major role in combating corrosion. This paper briefly describes the contributions and impact of various nickel alloy systems developed and in use during the last 100 years on the CPI and petrochemical industrial segments with comments as to what the future holds for the newer alloys developed in the last 20 years and the competition faced by these alloys in the new millennium. The impact of the newer super-austenitic alloys developed in the last few years is also discussed.

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Craig, F. F. "Field Use of Halogen Compounds To Trace Injected CO2." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 1985. http://dx.doi.org/10.2118/14309-ms.

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Russell, J. M., L. L. Gordley, J. H. Park, and S. R. Drayson. "HALOE Observations of Ozone, Halogen, Nitrogen, and Hydrogen Compounds Made from the UARS Platform." In Optical Remote Sensing of the Atmosphere. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/orsa.1993.thd.3.

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The Halogen Occultation Experiment (HALOE) was launched September 12, 1991, by the Space Shuttle Discovery into a 57°, 585-km, near-circular orbit onboard the Upper Atmosphere Research Satellite (UARS). The experiment was allowed to outgass for about 1 month before science observations began on October 11, 1991. The experiment approach is solar occultation. The instrument technique uses the principle of gas-filter radiometry in four channels to measure vertical profiles of HCℓ, HF, CH4, and NO, and broadband radiometry in four other channels to measure NO2, H2O, O3, and CO2. The latter channel is used for pressure registration and temperature versus pressure sounding of the atmosphere. Methane measurements extend to about 70 km, H2O and temperature to 80 km, O3 to 90 km, HCℓ and HF to ≈ 60 km, NO2 to ≈ 55 km, and NO to 120 km altitude. Results from this experiment have provided the first pressure versus latitude cross sections of HCℓ, HF, and NO, including continuous measurements of NO from the upper troposphere, in some cases, to the lower thermosphere. The data set will be used to pursue a number of scientific investigations, including stratospheric photochemistry and dynamics studies, evaluation of the impact of natural versus anthropogenic chlorine sources on total chlorine, the effect of volcanic aerosols on the chemistry, and study of Antarctic processes which occur during the ozone hole development and recovery phases.

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Lee, Long C., and Masako Suto. "Photoabsorption And Fluorescence Cross Sections Of Halogen Compounds In VUV." In 1988 Los Angeles Symposium--O-E/LASE '88, edited by Nancy DelGrande, James A. R. Samson, and David Y. Smith. SPIE, 1988. http://dx.doi.org/10.1117/12.945473.

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Zuriaga, M. J., S. C. Perez, L. C. Pardo, and J. Ll Tamarit. "Dynamic heterogeneity in the glass-like monoclinic phases of some halogen methane compounds." In 4TH INTERNATIONAL SYMPOSIUM ON SLOW DYNAMICS IN COMPLEX SYSTEMS: Keep Going Tohoku. American Institute of Physics, 2013. http://dx.doi.org/10.1063/1.4794551.

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Kepeňová, Martina, Michaela Benediková, Mária Vilková, Miroslava Litecká, and Ivan Potočňák. "Ionic palladium(II) complexes with nitro and halogen derivatives of 8-hydroxyquinoline." In 2nd International Conference on Chemo and Bioinformatics. Institute for Information Technologies, University of Kragujevac, 2023. http://dx.doi.org/10.46793/iccbi23.443k.

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Four commercially unavailable derivatives of 8-hydroxyquinoline with different functional groups (nitro and halogen) in positions 5 and 7 were prepared: 5-nitro-7-iodo-8-hydroxyquinoline (HNIQ), 5-nitro-7-bromo-8-hydroxyquinoline (HNBrQ), 5-iodo-7-bromo-8-hydroxyquinoline (HIBrQ) and 5-chloro-7-bromo-8-hydroxyquinoline (HClBrQ). Their characterization was performed by IR and NMR spectroscopy, elemental analysis and in the case of HIBrQ and HClBrQ by single crystal X-ray structure analysis. Prepared compounds were used for the synthesis of new palladium(II) complexes NH2(CH3)2[PdCl2(XQ)], where XQ = NIQ (1), NBrQ (2), IBrQ (3) and ClBrQ (4). IR and NMR spectroscopy, elemental and X-ray structure analysis were used for their characterization. Bidentate chelate coordination of one molecule of XQ through nitrogen and oxygen atoms in square planar complexes was found. These complexes represent a group of compounds in which biological activities were found and will be used for the following biological study.

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Qin, Qi-Zong, Yu-Lin Li, Ping-He Lu, Zhuang-Jian Zhang, Zhong-Kao Jin, and Qi-Ke Zheng. "Laser-Induced Reactions of Semiconductor Surfaces with Chlorine." In The Microphysics of Surfaces: Beam-Induced Processes. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/msbip.1991.tua1.

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Laser-induced chemical reaction of semiconductor with halogen and halogen compounds has attracted much attention in recent years due to its potential application in fabrication of microelectronic devices. We have reported UV and visible laser-induced reactions of Si and GaAs surfaces with chlorine using a CW molecular beam technique coupled with time-resolved mass spectrometry(1,2,). This paper will present recent studies in our laboratory on laser-induced reactions of Ge(111), Si(111), GaAs(100) and lnP(100) surfaces with chlorine molecules under 355-, 560-, and 1064-nm laser irradiations. We are particularly interested in the use of near infrared (1064-nm) laser photons as well as the promotion of reaction by raising the incident chlorine molecules’ translational energy. The objective is to achieve a better understanding of the mechanism of laser-induced reaction and its potential application in the chemical etching of semiconductor.

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Reports on the topic "Halogen compounds"

1

Welch, M. J. Labeling of receptor ligands and other compounds with halogen radionuclides. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/5654837.

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Wells, Richard L., William K. Holley, Soheila Shafieezad, Andrew T. McPhail, and Colin G. Pitt. The First Organogallium Four-Membered Ring Compound with Arsenic, Halogen Mixed Bridging: Synthesis and Crystal Structure of Ph2GaAs(SiMe3)2Ga(Ph) 2Cl. Defense Technical Information Center, 1988. http://dx.doi.org/10.21236/ada198571.

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Lehnert, Bruce E., and Douglas M. Stavert. The Acute Inhalation Toxicity of Pyrolysis Products of Halon 1301: Exercise Potentiation of Expression of Lung Injury Induced by Compounds 1 and 2. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada231615.

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