Log in

Relevant bibliographies by topics / Dicationic

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Dicationic'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Dicationic.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Dicationic"

1

Medjahed, Nassima, Mansour Debdab, Boumediene Haddad, et al. "Synthesis and Structural Characterization of Imidazolium-Based Dicationic Ionic Liquids." Chemistry Proceedings 3, no. 1 (2020): 80. http://dx.doi.org/10.3390/ecsoc-24-08389.

Full text

Abstract:

Dicationic ionic liquids present a novel class of ionic liquids composed of dication and two monoanions; the latter have shown an increasing interest in recent years and are used in many applications. Compared to conventional ionic liquids, the physicochemical properties of dicationic ionic liquids can be set by modifying the languor and the type of chains linking the cationic heads as well as the type of cation. In this work, we present the synthesis of three dicationic ionic liquids based on imidazolium with two steps; the first of which is a quaternization reaction leading to the formation of dicationic ionic liquids with the iodide ion. The characterization of these organic salts was carried out by magnetic resonance spectroscopy, allowing a better identification of the products obtained.

APA, Harvard, Vancouver, ISO, and other styles

2

Sun, Yi-Xin, Ying-Ying Wang, Bing-Bing Shen, Bi-Xian Zhang, and Xiao-Mei Hu. "Synthesis and investigation of physico-chemical properties of dicationic ionic liquids." Royal Society Open Science 5, no. 12 (2018): 181230. http://dx.doi.org/10.1098/rsos.181230.

Full text

Abstract:

A series of dicationic ionic liquids (ILs) including [C 4 (MIM) 2 ][PF 6 ] 2 , [C 5 (MIM) 2 ][PF 6 ] 2 , [C 6 (MIM) 2 ][PF 6 ] 2 and [C 4 (PYR) 2 ][PF 6 ] 2 were synthesized. Their thermal stability and melting points were analysed. It was found that dicationic ILs presented important implications in the design of homogeneous and heterogeneous system with water. A homogeneous system of dicationic ILs with water could be formed at a relatively high temperature and then a heterogeneous system was formed when the solution was cooled to a low temperature. The ILs recovered by altering the temperature were obtained in high percentage yields of [C 4 (MIM) 2 ][PF 6 ] 2 (97.6%), [C 5 (MIM) 2 ][PF 6 ] 2 (97.3%), [C 6 (MIM) 2 ][PF 6 ] 2 (98.0%) and [C 4 (PYR) 2 ][PF 6 ] 2 (94.2%). On the other hand, [C 4 (MIM) 2 ][PF 6 ] 2 and [C 5 (MIM) 2 ][PF 6 ] 2 exhibited good solubility in acetonitrile and acetone. A homogeneous system could be achieved with imidazolium-based ILs with a relatively low amount of water and acetonitrile at room temperature. All of the properties of dicationic ILs have a strong correlation with the nature of dications, the linkage chain and the symmetry of dications. Dicationic ILs may provide a new opportunity for some specific applications in order to enable the effective separation and isolation of products.

APA, Harvard, Vancouver, ISO, and other styles

3

Knoecer, Larecia, Daniel DeSchepper, and Douglas A. Klumpp. "Superacid-Induced Reactions of Nefopam." Organic Chemistry International 2010 (June 13, 2010): 1–5. http://dx.doi.org/10.1155/2010/496818.

Full text

Abstract:

The analgesic drug nefopam reacts in superacidic media to form a dicationic superelectrophiles by ring opening. The dication species is capable of reacting with arenes in Friedel-Crafts-type conversions. This chemistry is used to prepare novel derivatives of nefopam.

APA, Harvard, Vancouver, ISO, and other styles

4

Brendle, James J., Abram Outlaw, Arvind Kumar, et al. "Antileishmanial Activities of Several Classes of Aromatic Dications." Antimicrobial Agents and Chemotherapy 46, no. 3 (2002): 797–807. http://dx.doi.org/10.1128/aac.46.3.797-807.2002.

Full text

Abstract:

ABSTRACT Aromatic dicationic molecules possess impressive activity against a broad spectrum of microbial pathogens, including Pneumocystis carinii, Cryptosporidium parvum, and Candida albicans. In this work, 58 aromatic cations were examined for inhibitory activity against axenic amastigote-like Leishmania donovani parasites. In general, the most potent of the compounds were substituted diphenyl furan and thiophene dications. 2,5-Bis-(4-amidinophenyl)thiophene was the most active compound. This agent displayed a 50% inhibitory concentration (IC50) of 0.42 ± 0.08 μM against L. donovani and an in vitro antileishmanial potency 6.2-fold greater than that of the clinical antileishmanial dication pentamidine and was 155-fold more toxic to the parasites than to a mouse macrophage cell line. 2,4-Bis-(4-amidinopheny)furan was twice as active as pentamidine (IC50, 1.30 ± 0.21 μM), while 2,5-bis-(4-amidinopheny)furan and pentamidine were essentially equipotent in our in vitro antileishmanial assay. Carbazoles, dibenzofurans, dibenzothiophenes, and benzimidazoles containing amidine or substituted amidine groups were generally less active than the diphenyl furans and thiophenes. In all cases, aromatic dications possessing strong antileishmanial activity were severalfold more toxic to the parasites than to a cultured mouse macrophage cell line. These structure-activity relationships demonstrate the potent antileishmanial activity of several aromatic dications and provide valuable information for the future design and synthesis of more potent antiparasitic agents.

APA, Harvard, Vancouver, ISO, and other styles

5

Ringuet, Michel, and Jacques Gagnon. "Synthesis and protonation studies of a meso-unsubstituted surfactant porphyrin." Canadian Journal of Chemistry 63, no. 9 (1985): 2420–24. http://dx.doi.org/10.1139/v85-400.

Full text

Abstract:

A meso-unsubstituted surfactant porphyrin has been synthesized. Spectroscopic studies show that intermolecular protonation occurs between the side-chain carboxyl groups and the inner nitrogen atoms of the porphyrin, leading to the formation of a porphyrin dication. In 5 × 10−5 M chloroform solution, 27% of the porphyrin molecules are in the dicationic form and they are self-associated with some remaining molecules in the free base form.

APA, Harvard, Vancouver, ISO, and other styles

6

Loh, Ying Kai, Chitra Gurnani, Rakesh Ganguly, and Dragoslav Vidović. "A Dicationic Iminophosphane." Inorganic Chemistry 54, no. 7 (2015): 3087–89. http://dx.doi.org/10.1021/acs.inorgchem.5b00003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Krasovskiy, V. G., O. B. Gorbatsrvich, L. M. Glukhov, and E. A. Chernikova. "Dicationic disiloxane liquids." IOP Conference Series: Materials Science and Engineering 848 (May 28, 2020): 012042. http://dx.doi.org/10.1088/1757-899x/848/1/012042.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Javaherian, Mohammad, and Seyyed Jafar Saghanezhad. "Synthesis, Characterization and Applications of Dicationic Ionic Liquids in Organic Synthesis." Mini-Reviews in Organic Chemistry 17, no. 4 (2020): 450–64. http://dx.doi.org/10.2174/1570193x16666190508091231.

Full text

Abstract:

Dicationic ionic liquids are an emerging group of Ionic Liquids (ILs) that are currently receiving much attention as green reaction media and catalysts. Because of a great number of possible combinations of cations and anions, the physical and chemical properties of dicationic ionic liquids are more tunable and broader than monocationic ILs. Therefore, their unique properties have made them the target of many applied and fundamental researches. Actually, dicationic ionic liquids are more effective and rather fascinating than traditional monocationic ILs. So, due to greater versatility and diversity, their applications in organic synthesis have been extensively grown. In this review, we have focused on the synthesis, characterization and applications of dicationic ionic liquids, especially, in organic synthesis.

APA, Harvard, Vancouver, ISO, and other styles

9

Wang, Xingbao, Vincent Dorcet, Yi Luo, Jean-Francois Carpentier, and Evgueni Kirillov. "Synthesis and structure of the first discrete dinuclear cationic aluminum complexes." Dalton Transactions 45, no. 31 (2016): 12346–51. http://dx.doi.org/10.1039/c6dt02360f.

Full text

Abstract:

The preparation of discrete mono- and dicationic dinuclear aluminum complexes from the parent charge neutral dinuclear precursors has been studied. The first crystal structure of a dicationic dialuminum complex is reported.

APA, Harvard, Vancouver, ISO, and other styles

10

Ehsani-Nasab, Zainab, and Ali Ezabadi. "Preparation and Characterization of a Novel Room Temperature Dicationic Ionic Liquid and its Application in the Synthesis of Xanthenediones Under Solvent-Free Conditions." Combinatorial Chemistry & High Throughput Screening 21, no. 8 (2018): 602–8. http://dx.doi.org/10.2174/1386207321666181106114848.

Full text

Abstract:

Aim and Objective: In the present work, 1, 1’-sulfinyldiethylammonium bis (hydrogen sulfate) as a novel room temperature dicationic ionic liquid was synthesized and used as a catalyst for xanthenediones synthesis. Material and Method: The dicationic ionic liquid has been synthesized using ethylamine and thionyl chloride as precursors. Then, by the reaction of [(EtNH2)2SO]Cl2 with H2SO4, [(EtNH2)2SO][HSO4]2 was prepared and after that, it was characterized by FT-IR, 1H NMR, 13C NMR as well as Hammett acidity function. This dicationic ionic liquid was used as a catalyst for the synthesis of xanthenediones via condensation of structurally diverse aldehydes and dimedone under solvent-free conditions. The progress of the reaction was monitored by thin layer chromatography (ethyl acetate/n-hexane = 3/7). Results: An efficient solvent-free method for the synthesis of xanthenediones has been developed in the presence of [(EtNH2)2SO][HSO4]2 as a powerful catalyst with high to excellent yields, and short reaction times. Additionally, recycling studies have demonstrated that the dicationic ionic liquid can be readily recovered and reused at least four times without significant loss of its catalytic activity. Conclusion: This new dicationic ionic liquid can act as a highly efficient catalyst for xanthenediones synthesis under solvent-free conditions.

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Dicationic"

1

Nelsen, D. Luke Gagné Michel R. "Electrophilic reactions with dicationic platinum." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2008. http://dc.lib.unc.edu/u?/etd,2188.

Full text

Abstract:

Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2009.<br>Title from electronic title page (viewed Jun. 26, 2009). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Chemistry. " Discipline: Chemistry; Department/School: Chemistry.

APA, Harvard, Vancouver, ISO, and other styles

2

Shareef, Abdur-Rafay. "Synthesis Of Potential Anti-Leishmania Dicationic Diaryldiamidines." Digital Archive @ GSU, 2005. http://digitalarchive.gsu.edu/chemistry_theses/25.

Full text

Abstract:

Dicationic diamidines synthesized in the Boykin group a have shown broad range of activity against a wide variety of microbial pathogens such as Cryptosporidium parvum, Leishmania donovani, Plasmodium falciparum, Trypanosoma burcei, and Trichomonas vaginalis. Thiophene based dicationic diamidines have been especially impressive versus Trichomoniasis, and several species of the leishmania parasite. The best compound in vitro against leishmania was 2,5-bis-(4-amidophenyl)thiophene [DB 351]. In an attempt to improve upon antileishmanial activity, several analogs of DB 351 have been synthesized. Previously the central heterocyclic ring has been changed (furan, pyrrole, etc.), and the phenyl has been substituted with a pyridine ring, however, in the thiophene series, the 3 and 4 position of the central thiophene ring has remained unmodified. By modifying the 3 and 4 position of the thiophene ring, and taking advantage of the substituent effect, the pharmacodynamic and distribution properties of DB 351 will altered; hopefully leading to more potent antileishmanial compounds.

APA, Harvard, Vancouver, ISO, and other styles

3

Shareef, Abdur-Rafay. "Synthesis Of Potential Anti-Leishmania Dicationic Diaryldiamidines." Digital Archive @ GSU, 2006. http://digitalarchive.gsu.edu/chemistry_theses/3.

Full text

Abstract:

Dicationic diamidines synthesized in the Boykin group a have shown broad range of activity against a wide variety of microbial pathogens such as Cryptosporidium parvum, Leishmania donovani, Plasmodium falciparum, Trypanosoma burcei, and Trichomonas vaginalis. Thiophene based dicationic diamidines have been especially impressive versus Trichomoniasis, and several species of the leishmania parasite. The best compound in vitro against leishmania was 2,5-bis-(4-amidophenyl)thiophene [DB 351]. In an attempt to improve upon antileishmanial activity, several analogs of DB 351 have been synthesized. Previously the central heterocyclic ring has been changed (furan, pyrrole, etc.), and the phenyl has been substituted with a pyridine ring, however, in the thiophene series, the 3 and 4 position of the central thiophene ring has remained unmodified. By modifying the 3 and 4 position of the thiophene ring, and taking advantage of the substituent effect, the pharmacodynamic and distribution properties of DB 351 will altered; hopefully leading to more potent antileishmanial compounds.

APA, Harvard, Vancouver, ISO, and other styles

4

Luther, Thomas Alan. "Dicationic dihydrogen complexes of osmium and ruthenium /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/11540.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Franks, Marion A. "The Synthesis and Characterization of Some Ir(III) Dicationic Complexes." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/30039.

Full text

Abstract:

The complex [IrH(COD)(PMe3)3][Cl]2o2HCl was prepared by the reaction between [Ir(COD)(PMe3)3]Cl and HCl gas in methylene chloride. The product precipitated from the solution and is soluble in polar solvents such as water, acetonitrile, and acetone. [IrH(COD)(PMe3)3][Cl]2o2HCl undergoes reaction in water to form fac-IrCl3(PMe3)3. Also, other [IrH(COD)(PMe3)3][X]2 salts were prepared with X being PF6, OTF, or BF4. It was determined that each salt retained a certain amount of excess acids and [IrH(COD)(PMe3)3][OTF]HOTf was the most stable in the solvent acetonitrile while [IrH(COD)(PMe3)3][PF6]2 showed signs of reaction in acetonitrile after 4 hours. The dicationic salts were also reductively deprotonated by DMSO to form the Ir(I) starting material. Finally a slow equilibrium was noted for [IrH(COD)(PMe3)3][BF4]2 in water by the observation of the reductive deprotonation product. The grignard reaction was employed to synthesize Ir(CH3)3(PMe3)3. IrCl3(PMe3)3 reacts with methyl grignard in THF/Benzene to form fac-Ir(CH3)3(PMe3)3. Only the facial isomer of this reaction was observed and the product was soluble in nonpolar solvents. Acidolysis was utilized to synthesize fac-IrCH3Cl2(PMe3).3 from the reaction between Ir(CH3)3(PMe3)3 and 2 equivalents of HCl. Ir(III) methyl dications have also been synthesized by the reaction of 2 equivalents triflic acids with fac-Ir(CH3)3(PMe3)3. The product of the reaction, mer-IrCH3(OTf)2(PMe3)3 was used to study the insertion of alkynes into the Iridium methyl bond. IrHCl2(PMe3)3 was synthesized by the careful acidolysis of IrH2Cl(PMe3)3 using 1 equivalent of HCl. IrH(OTf)2(PMe3)3 was also synthesized by the metathesis of IrHCl2(PMe3)3 with 2.04 equivalents of silver triflate. The product of that reaction, IrH(OTf)2(PMe3)3, has been used to form dimers and trimers of styrene via catalysis and to isomerize alkene alcohols to aldehydes. IrH(OTf)2(PMe3)3 was also used as a polymerization initiator for vinyl and allyl ethers.<br>Ph. D.

APA, Harvard, Vancouver, ISO, and other styles

6

Smith, Alexander. "Exploring new asymmetric reactions catalysed by dicationic Pd(II) complexes." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/6324.

Full text

Abstract:

Dicationic palladium(II) complexes have been shown to catalyse a number of important asymmetric transformations including Michael, Mannich and aldol reactions. This PhD thesis describes work undertaken to discover and develop novel applications of dicationic palladium(II) complexes in asymmetric catalysis. The introductory chapter outlines the advances in catalytic asymmetric α-functionlisation of β-ketoesters. This includes both metal-catalysed and organocatalytic processes with reference to C-C, C-X (X = F, Cl, Br), C-N, C-O and C-S bond forming reactions. Chapter 2 discusses the work towards the synthesis of β-amino acids via Michael reactions catalysed by Pd(II) complexes. These reactions failed to proceed with good enantioselectivities, leading to the investigation of a number of related transformations. In the following Chapter the reaction of β-ketoesters with oxaziridines to generate α- hydroxy-β-ketoesters was discovered. Extensive screening of reaction parameters led to the identification of dimethyldioxirane (DMD) as a superior oxidant for this reaction, providing ee’s of up to 98%. Examining a range of substrates revealed several key structural elements required for both reactivity and enantioselectivity. Determination of the absolute stereochemistry of the products revealed opposite facial selectivity to that reported in a number of related reactions. Chapter 4 discusses the results of DFT calculations undertaken by a colleague (Prof H. S. Rzepa), to identify the origins of stereoselectivity in the Pd(II) mediated α-hydroxylation of β-ketoesters with DMD. Chapter 5 discusses the investigation of carboxylated pyrrolidinones and succinimides as substrates in the hydroxylation reaction. Successful α-hydroxylation provided access to 3 classes of synthetically useful hydroxylated N-heterocyclic products with high optical purity, and brief synthetic studies directed towards the natural product Pramanicin were undertaken. The last Chapter contains experimental procedures and characterisation data of all the compounds synthesised during the course of this project.

APA, Harvard, Vancouver, ISO, and other styles

7

Kidd, Bryce Edwin. "Cation and Anion Transport in a Dicationic Imidazolium-Based Plastic Crystal Ion Conductor." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23300.

Full text

Abstract:

Here we investigate the organic ionic plastic crystal (OIPC) 1,2-bis[N-(N\'-hexylimidazolium-d2(4,5))]C2H4 2PF6- in one of its solid plastic crystal phases by means of multi-nuclear solid-state (SS) NMR and pulsed-field-gradient (PFG) NMR. We quantify distinct cation and anion diffusion coefficients as well as the diffusion activation energies (Ea) in this dicationic imidazolium-based OIPC. Our studies suggest a change in transport mechanism for the cation upon varying thermal and magnetic treatment (9.4 T), evidenced by changes in cation and anion Ea. Moreover, variable temperature 2H SSNMR lineshapes further support a change in local molecular environment upon slow cooling in B0. Additionally, we quantify the percentage of mobile anions as a function of temperature from variable temperature 19F SSNMR, where two distinct spectral features are present. We also comment on the pre-exponential factor (D0), giving insight into the number of degrees of freedom for both cation and anion as a function of thermal treatment. In conjunction with previously reported conductivity values for this class of OIPCs and the Stokes-Einstein relation, we propose that ion conduction is dominated by anion diffusion between crystallites (i.e., grain boundaries). Using our experimentally determine diffusion coefficient and previously reported PF6- hydrodynamic radius (rH), viscous (" = 4.1 Pa " s) ionic liquid (IL) is present with a cation rH of 0.34 nm. NMR measurements are very powerful in elucidating fundamental OIPC properties and allow a deeper understanding of ion transport within such materials.<br>Master of Science

APA, Harvard, Vancouver, ISO, and other styles

8

Chae, Hyun Sik. "Applications of nucleophilic substitution and addition reactions of dicationic ruthenium and iridium arene complexes in organic synthesis and materials chemistry /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3127638.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Landau, Shaun Errick. "Pushing the limits of acidity and basicity of transition metal hydride complexes, studies of acidic dicationic dihydrogen complexes of iron (II) and basic anionic hydride complexes of iridium (III)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0004/MQ45928.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Sivakumar, V. "Influence Of The Bite Angles Of Chelating Diphosphine Ligands In The Chemistry Of Ruthenium Hydride And Dihydrogen Complexes." Thesis, Indian Institute of Science, 2006. http://hdl.handle.net/2005/293.

Full text

Abstract:

The bite angle of a diphosphine ligand plays an important role in determining the reactivity of a transition metal complex. The coordinated dihydrogen on a transition metal center can be activated toward homolysis or heterolysis depending upon the nature of the metal center and the ancillary ligand environment. The present work deals with our investigations on the effect of the bite angle of the chelating diphosphine ligands in the chemistry of certain ruthenium hydride and dihydrogen complexes. Protonation of the ds-[Ru(H)2(dppm)(PPh3)2] (dppm = Ph2PCH2PPh2) using HBF4-Et2O resulted in the dihydrogen/hydride complex trans-(Formula). This species shows dynamic exchange of the H-atom between the dihydrogen and the hydride ligands. The H-atom site exchange was studied by NMR spectroscopy. Attempts to prepare the ruthenium dihydride complexes, cis-[Ru(H)2(dppe)(PPh3)2] (dppe = Ph2PCH2CH2PPh2) and cw-[Ru(H)2(dppp)(PPh3)2] (dppp = Ph2PCH2CH2CH2PPh2) with larger bite-angled diphosphines dppe and dppp were unsuccessful. Earlier work in our group on the effect of trans nitrile ligands in a series of complexes of the type (Formula)howed that the properties of the bound H2 are almost invariant with a change in the R group of the nitrile. hi an effort to compare those results with analogous ruthenium complexes bearing smaller bite-angled diphosphine, dppm, we synthesized and characterized a series of complexes of the type (Formula). We found that the properties of the bound H2 were once again invariant with a change in the R group of the nitrile. In an effort to compare the effect of having two diphosphine ligands of different bite angles with systems containing symmetrical diphosphine ligands reported by our group,3 we synthesized a series of complexes of the type (Formula). These complexes exhibit hybrid properties in comparison to systems with symmetrical diphosphine ligands in terms of spectroscopic features and chemical reactivity. Thus, the bite angle of the diphosphine ligand has a definite influence on the properties of the bound H2 ligand.

APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Dicationic"

1

Zink, Michel. La pre dication en langue romane avant 1300. Slatkine, 1991.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Taylor, Larissa. Preachers and people in the reformations and early modern period. Brill Academic Publishers, 2003.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Eland, John H. D., and Raimund Feifel. Mainly aliphatic molecules. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198788980.003.0007.

Full text

Abstract:

Double photoionisation spectra of homologous iodides and alcohols, acetonitrile, methyl mercaptan, acetaldehyde, acetone, norbornane, cyclooctatetraene, and TMMD are presented. Effects on the spectra of these molecules from electronic state congestion and geometry changes on ionisation mean that only the lowest dication states can be identified. As little detailed analysis of the individual spectra is possible, this chapter presents the molecules in groups rather than individually. In this chapter, molecules are ordered more thematically than strictly by size. The chapter starts with four homologous iodides and three homologous alcohols. Then this chapter takes some individual molecules with different substituent groups and proceed to a few larger molecules. The chapter demonstrates the dominant effect of the distance to which charges can separate in the dication on the double ionisation threshold.

APA, Harvard, Vancouver, ISO, and other styles

4

Eland, John H. D., and Raimund Feifel. Diatomic molecules. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198788980.003.0003.

Full text

Abstract:

Double ionisation of most of the experimentally accessible diatomic molecules has been studied previously by several techniques, including Auger spectroscopy, double electron transfer, kinetic energy release, and high-level theory. New double photoionisation spectra of HBr, HI, N2, CO, NO, O2, Br2, ICl, and I2 are presented here with analysis to identify the electronic states of the doubly charged ions. A simple empirical model is introduced to estimate double ionisation energies on the basis of orbital energies. For CO, NO, and O2, an indirect double ionisation mechanism is found, involving dissociation of a singly charged molecular ion followed by atomic autoionisation of one fragment. Energies of the dication states are listed with distinction between adiabatic and vertical values.

APA, Harvard, Vancouver, ISO, and other styles

5

Eland, John, and Raimund Feifel. Double Photoionisation Spectra of Molecules. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198788980.001.0001.

Full text

Abstract:

This book contains spectra of the doubly charged positive ions (dications) of some 75 molecules, including the major constituents of terrestrial and planetary atmospheres and prototypes of major chemical groups. It is intended to be a new resource for research in all areas of molecular spectroscopy involving high energy environments, both terrestrial and extra-terrestrial. All the spectra have been produced by photoionisation using laboratory lamps or synchrotron radiation and have been measured using the magnetic bottle time-of-flight technique by coincidence detection of correlated electron pairs. Full references to published work on the same species are given, though for several molecules these are the first published spectra. Double ionisation energies are listed and discussed in relation to the molecular electronic structure of the molecules. A full introduction to the field of molecular double ionisation is included and the mechanisms by which double photoionisation can occur are examined in detail. A preliminary chapter covers double photoionisation of an atom in order to explain the basic principles of the technique, then five chapters present spectra of molecules of increasing size. A seventh chapter on the new fields of core–core and core–valence double ionisations, with selected examples, completes the main body of the book. Appendices explain the detailed mechanisms of double photoionisation, the calibration of the electron spectrometers, and give a brief summary of the methods by which double ionisation energies are calculated theoretically.

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Dicationic"

1

Zhao, Wei, Ming Chen, and Guang Feng. "Modeling of Dicationic Ionic Liquids." In Encyclopedia of Ionic Liquids. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-10-6739-6_65-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Elsabahy, Mahmoud, Ildiko Badea, Ronald Verrall, McDonald Donkuru, and Marianna Foldvari. "Dicationic gemini nanoparticle design for gene therapy." In Organic Nanomaterials. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118354377.ch23.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Sella, Catherine, and Denise Bauer. "A molecular modelling study of dianionic species extraction by dicationic extractants." In Trends in QSAR and Molecular Modelling 92. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1472-1_122.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Elkady, Ashraf S., and Renat I. Zhdanov. "Dicationic DEGA-Based Lipid Systems for Gene Transfer and Delivery: Supramolecular Structure and Activity." In Nanocarrier Technologies. Springer Netherlands, 2006. http://dx.doi.org/10.1007/978-1-4020-5041-1_10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Fujihara, Hisashi, and Naomichi Furukawa. "Dications from Cyclic Polythioethers." In Sulfur-Centered Reactive Intermediates in Chemistry and Biology. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5874-9_17.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Mills, Nancy S. "Fluorenylidene and Indenylidene Dications: Insights about Antiaromaticity." In ACS Symposium Series. American Chemical Society, 2007. http://dx.doi.org/10.1021/bk-2007-0965.ch011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Christen, Dines. "Molecular Constants of CO2+ X 3Π Carbon Monoxide Dication." In Molecular Constants Mostly from Microwave, Molecular Beam, and Sub-Doppler Laser Spectroscopy. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49199-7_90.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Nakai, Katsunori, and Kaoru Yamanouchi. "Long-Lived Neutral H $$ _{2} $$ 2 in Hydrogen Migration Within Hydrocarbon Dication." In Springer Proceedings in Physics. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13242-6_38.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Koch, Wolfram, and Helmut Schwarz. "Experimental and Theoretical Studies of Small Organic Dications, Molecules with Highly Remarkable Properties." In Structure/Reactivity and Thermochemistry of Ions. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3787-1_21.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Mundim, Maria Suely Pedrosa, Pietro Candori, Stefano Falcinelli, Kleber Carlos Mundim, Fernando Pirani, and Franco Vecchiocattivi. "A New Statistical Method for the Determination of Dynamical Features of Molecular Dication Dissociation Processes." In Computational Science and Its Applications – ICCSA 2012. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31125-3_33.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Dicationic"

1

Leveque, J. M., N. F. Aminuddin, M. Kermanioryani, M. I. Abdul Mutalib, K. C. Lethesh, and F. Afzal Mazlan. "An easy, green and ultra-fast synthesis of dicationic ionic liquids: From days to minutes." In 4TH INTERNATIONAL CONFERENCE ON FUNDAMENTAL AND APPLIED SCIENCES (ICFAS2016). Author(s), 2016. http://dx.doi.org/10.1063/1.4968085.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

"Study of physicochemical and dielectric proprieties of dicationic ionic liquids: the effect of the nature of the cation." In 1st International Symposium on Dielectric Materials and Applications. Materials Research Forum LLC, 2016. http://dx.doi.org/10.21741/9781945291197-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Hubin-Franskin, M. J. "Dications. Spectroscopy and photon induced dynamics." In Synchrotron radiation and dynamic phenomena. AIP, 1992. http://dx.doi.org/10.1063/1.42547.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Kechaoglou, Emmanouil, and Constantine Kosmidis. "Vibrationally mediated photodissociation of water dications." In Frontiers in Optics. OSA, 2020. http://dx.doi.org/10.1364/fio.2020.jth4b.33.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Larimian, Seyedreza, Sonia Erattupuzha, Erik Lötstedt, et al. "Long-lived Hydrocarbon Dications from Strong Field Interaction." In International Conference on Ultrafast Phenomena. OSA, 2016. http://dx.doi.org/10.1364/up.2016.utu4a.27.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Falcinelli, Stefano, Fernando Pirani, Michele Alagia, et al. "The Role of Molecular Dications in Planetary Atmospheric Escape." In The 1st International Electronic Conference on Atmospheric Sciences. MDPI, 2016. http://dx.doi.org/10.3390/ecas2016-b004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Weber, J., James Smith, and Shuang Xu. "THE ELECTRONIC SPECTRUM OF CRYOGENIC RUTHENIUM-TRIS-BIPYRIDINE DICATIONS." In 71st International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2016. http://dx.doi.org/10.15278/isms.2016.td03.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Falcinelli, Stefano. "Coulomb explosion and fragmentation dynamics of propylene oxide dication." In 10th Jubilee International Conference of the Balkan Physical Union. Author(s), 2019. http://dx.doi.org/10.1063/1.5091171.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Nakai, Katsunori, and Kaoru Yamanouchi. "Long-Lived Neutral H2 in Hydrogen Migration within Hydrocarbon Dication." In International Conference on Ultrafast Phenomena. OSA, 2014. http://dx.doi.org/10.1364/up.2014.08.tue.p2.25.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Ghanmi, Chedli, Razan Alshamrani, Mohamed Farjallah, and Hamid Berriche. "Theoretical investigation of the electronic properties of the dication BeRb2+." In THE SIXTH SAUDI INTERNATIONAL MEETING ON FRONTIERS OF PHYSICS 2018 (SIMFP2018). Author(s), 2018. http://dx.doi.org/10.1063/1.5042384.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Dicationic"

1

Levanon, H., S. Michaeli, A. Regev, T. Galili, M. Cyr, and J. L. Sessler. The photoexcited triplet state of sapphyrin dication: Unusual spin alignment in monomers and spin delocalization in dimers. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/10181974.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!