Academic literature on the topic 'Nitrogen Donor Molecules'

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Journal articles on the topic "Nitrogen Donor Molecules"

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Hasanova, S. S. "SYNTHESIS, PHYSICOCHEMICAL STUDY AND CRYSTAL STRUCTURE OF BIS-(PNITROBENZOATE)-DI-(PYRAZINE) NICKEL(II)-DIHYDRATE." Chemical Problems 20, no. 1 (2022): 95–101. http://dx.doi.org/10.32737/2221-8688-2022-1-95-101.

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The molecular structure of the new Ni(II) complex of p-nitrobenzoic acid and pyrazine was synthesized and deciphered. It found that the central atom was coordinated by the ligand of p-nitrobenzoic acid according to the monodentate type. Having the basic properties of the pyrazine molecule, it was coordinated by the nickel atom in a donor-acceptor type of bond through donor nitrogen atoms. Two water molecules through donor oxygen atoms were coordinated by nickel and complement its coordination number to six. Pyrazine molecules cross-link para-nitrobenzoate Ni(II) molecules with the help of dono
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Dressel, Martina P., Stefan Nogai, Raphael J. F. Berger, and Hubert Schmidbaur. "Beryllium Dichloride Coordination by Nitrogen Donor Molecules." Zeitschrift für Naturforschung B 58, no. 1 (2003): 173–82. http://dx.doi.org/10.1515/znb-2003-0127.

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Abstract The reaction of anhydrous beryllium chloride with nitrogen donors L in diethylether as a solvent under mild conditions affords 1:2 complexes of the type L2BeCl2 [L = benzonitrile (1), pyridine (2), 3,5-dimethylpyridine, pyrrolidine, piperidine (8), and diethylamine (10)]. Structural studies of compounds 1, 2, 8 (CHCl3), and 10 have shown that the complexes have the beryllium centers N2Cl2- tetracoordinated with a distorted tetrahedral geometry of the core unit. In crystals of 8 and 10 these molecules are associated to form helical strings via distinct N-H-Cl hydrogen bonding. The reac
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SHEKHAR, SRIVASTAVA, KUMAR SONI DILIP, and SHANKAR GUPTA HARI. "Some Molecular Adducts of Dibenzyltellurium(IV) Derivatives with Nitrogen Donor Molecules." Journal of Indian Chemical Society Vol. 73, Jun 1996 (1996): 255–56. https://doi.org/10.5281/zenodo.5897454.

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School of Studies m Chemistry, Jiwaji University, Gwahor-474 011 <em>Manuscript received 30 July 1993, revised 7 October 1994, accepted 4 November 1994</em> Some Molecular Adducts of dibenzyltellurium(IV) Derivatives with Nitrogen Donor Molecules.
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Kaduk, James A., Amy M. Gindhart, and Thomas N. Blanton. "Crystal structure of atazanavir, C38H52N6O7." Powder Diffraction 35, no. 2 (2020): 129–35. http://dx.doi.org/10.1017/s0885715620000135.

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The crystal structure of atazanavir has been solved and refined using synchrotron X-ray powder diffraction data and optimized using density functional techniques. Atazanavir crystallizes in space group P21 (#4) with a = 15.33545(7), b = 5.90396(3), c = 21.56949(13) Å, β = 96.2923(4)°, V = 1941.134(11) Å3, and Z = 2. Despite being labeled as “atazanavir sulfate”, the commercial reagent sample consisted of atazanavir free base. The structure consists of an array of extended-conformation molecules parallel to the ac-plane. Although the atazanavir molecule contains only four classical hydrogen bon
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Liantonio, Rosalba, Thomas A. Logothetis, Maria T. Messina, et al. "2,2':6',2''-Terpyridine as Monodentate Ligand: Halogen Bonding Driven Formation of Discrete 2 : 1 Aggregates with 1,2,4,5-Tetrafluoro-3,6-diiodobenzene." Collection of Czechoslovak Chemical Communications 67, no. 9 (2002): 1373–82. http://dx.doi.org/10.1135/cccc20021373.

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2,2':6',2''-Terpyridine (1) is a well-known electron donor module in metal coordination chemistry and typically works as a tridentate ligand. Here it is shown that 1 can also work as electron donor towards iodoperfluorocarbons both in solution and in the solid phase. Halogen-bonded supramolecular systems are thus obtained. Specifically, terpyridine 1 self-assembles with 1,2,4,5-tetrafluoro-3,6-diiodobenzene (2) and affords the trimeric adduct 3, which is stable and crystalline in the air at room temperature. Single crystal X-ray analysis shows how in adduct 3 both iodine atoms of one molecule
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Medrano-Uribe, Katy, Jorge Humbrías-Martín, and Luca Dell’Amico. "Study of tribenzo[b,d,f]azepine as donor in D–A photocatalysts." Beilstein Journal of Organic Chemistry 21 (May 14, 2025): 935–44. https://doi.org/10.3762/bjoc.21.76.

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Since the discovery of donor–acceptor (D–A) type molecules in the field of materials science, they have found great applicability in the field of photocatalysis. Most of these compounds are based on complex D–A–D structures or multi-D–A systems, such as 4CzIPN. Whereas these systems have been widely studied and applied as photocatalysts, simpler D–A structures remain less explored. Nevertheless, the simplicity of D–A structures makes them the ideal structures to further understand the structure–property relationship of D–A molecules for optimizing their photocatalytic performance by simpler mo
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Masárová, Petra, and Jan Moncol. "Crystal structures of [M(N3)2(phen)2] compounds, M = Mn, Co or Cu and phen = 1,10-phenanthroline." Acta Chimica Slovaca 9, no. 2 (2016): 152–57. http://dx.doi.org/10.1515/acs-2016-0026.

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Abstract Crystal structures of the title compounds, [Mn(N3)2(phen)2] (1), [Co(N3)2(phen)2] (2) and [Cu(N3)2(phen)2] · 1.5 H2O (3), have been determined at 100 K. Central atoms of the above-mentioned compounds are coordinated by four pyridine nitrogen donor atoms from two 1,10-phenanthroline molecules and two nitrogen donor atoms of terminally coordinated azide anions, which resulted in a distorted {MN6} octahedral geometry. The π-π stacking interactions, as well as weak C—H∙∙∙N hydrogen bonds, were observed in all three compounds. Moreover, complex 3 revealed also supramolecular chains of the
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Amulya, Satsangi, Srivastava Shobhit, Yogi Bhumika, and Kumar Gupta Sujeet. "Benzothiazole: Heterocyclic Compound A Review." Pharmaceutical and Chemical Journal 9, no. 6 (2022): 24–29. https://doi.org/10.5281/zenodo.13980830.

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We have an unlimited supply of therapeutic molecules because to heterocyclic chemistry.<sup> </sup>The biological actions of the benzothiazole ring system include anxiolytic, ant allergic, cardiovascular, anti-diabetic, anti-psychotic and antioxidant effects etc. Such as benzothiazole moieties and their derivatives, are a major class of molecules in medicinal chemistry. They also offer a wide range of coordinative properties attributed to the combination of additional donor sites including nitrogen, sulphur, and oxygen atoms, which serve as a scaffold for the synthesis of new active molecules.
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Robert, Emma G. L., and Jérôme Waser. "Silylium-Catalyzed Activation of Donor- Acceptor Strained Rings and Annulation with Indoles." CHIMIA 78, no. 4 (2024): 234–37. http://dx.doi.org/10.2533/chimia.2024.234.

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Leveraging the unique reactivity profile of donor-acceptor aminocyclopropanes and cyclobutanes allows the preparation of complex nitrogen-substituted molecules. While most reports focus on donor-acceptor strained rings with two geminal carbonyl groups as acceptors, mono carbonyl acceptor systems, despite their synthetic relevance, have been considerably less studied. Herein we describe catalytic annulation reactions ofaminocyclopropane and aminocyclobutane monoesters employing silylium catalysis to activate these less reactive donor-acceptor systems.
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Jovanović, Snežana, Jovana Bogojeski, Marijana Petković, and Živadin D. Bugarčić. "Interactions of nitrogen-donor bio-molecules with dinuclear platinum(II) complexes." Journal of Coordination Chemistry 68, no. 17-18 (2015): 3148–63. http://dx.doi.org/10.1080/00958972.2015.1048240.

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Dissertations / Theses on the topic "Nitrogen Donor Molecules"

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Gilligan, Julie Victoria. "Preparation and characterisation of some nitrogen and oxygen donor-ligand complexes of nickel(II)." Thesis, University of Salford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366005.

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Bowman, Gary Raymond, University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "Studies of Titanium(IV)complexes of mixed nitrogen and oxygen donor macrocycles and related schiff base ligands." THESIS_CSTE_SFH_Bowman_G.xml, 2002. http://handle.uws.edu.au:8081/1959.7/410.

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This work investigated the use of large tetradentate mixed nitrogen and oxygen donor macrocycles as potential ligands for titanium(IV).These large ligands are capable of encapsulating the metal ion, thereby protecting it from reacting further. In addition, titanium complexes of this type had not been reported previously.Molecular modelling was utilised to evaluate and predict the coordinating potential of the macrocycles investigated.An alternative synthetic strategy was needed to achieve coordination complexes with titanium. This involved the use of a benzene based solvent system and rigorous
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Even, Raymond. "Les premiers semiconducteurs moleculaires : les derives radicalaires des phtalocyanines." Paris 6, 1987. http://www.theses.fr/1987PA066161.

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Synthese de composes pc::(2)lu, pc::(2)ln(ln = yb,tm,dy,nd) a l'etat de grande purete et etude de leurs proprietes electriques intrinseques, ainsi que de celles de pcli, sur monocristaux et sur couches minces; mise en evidence de la possibilite de dopage de pc::(2)lu avec des composes organiques donneurs et accepteurs et avec pcli. Etude de l'absorption optique et observation de bandes de transfert de charge intramoleculaire, confirmee par ailleurs par rpe. Possibilite d'application de couches minces de pclu a la detection de gaz
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Bowman, Gary R. "Studies of Titanium(IV)complexes of mixed nitrogen and oxygen donor macrocycles and related schiff base ligands." Thesis, 2002. http://handle.uws.edu.au:8081/1959.7/410.

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This work investigated the use of large tetradentate mixed nitrogen and oxygen donor macrocycles as potential ligands for titanium(IV).These large ligands are capable of encapsulating the metal ion, thereby protecting it from reacting further. In addition, titanium complexes of this type had not been reported previously.Molecular modelling was utilised to evaluate and predict the coordinating potential of the macrocycles investigated.An alternative synthetic strategy was needed to achieve coordination complexes with titanium. This involved the use of a benzene based solvent system and rigorous
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Book chapters on the topic "Nitrogen Donor Molecules"

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Davies, Sian C., David L. Hughes, Raymond L. Richards, and J. Roger Sanders. "Mo, V and Fe Complexes of Tripodal Sulfur-Donor Ligands as Models for Nitrogenase Active Sites." In Nitrogen Fixation: From Molecules to Crop Productivity. Springer Netherlands, 2000. http://dx.doi.org/10.1007/0-306-47615-0_17.

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Coppens, Philip. "Electron Density Studies of Molecular Crystals." In X-Ray Charge Densities and Chemical Bonding. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195098235.003.0014.

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Small molecules consisting of light-, few-electron atoms were the first species beyond atoms to yield to quantum-mechanical methods. Similarly, crystals of small light-atom molecules have served as most useful test cases of charge density mapping. The small number of core electrons in first-row atoms enhances the relative contribution of valence electron scattering to the diffraction pattern. Early studies, done just after automated diffractometers became widely available, were concerned with molecular crystals such as uracil (Stewart and Jensen 1967), s-triazine (Coppens 1967), oxalic acid di
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"Vitamin C: Ascorbic Acid." In The Chemical Biology of Human Vitamins. The Royal Society of Chemistry, 2018. http://dx.doi.org/10.1039/bk9781788014649-00296.

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Vitamin C is the final water-soluble vitamin to be considered. It has a simple carbohydrate scaffold and thus a very different structure from the eight B vitamins. At physiologic pH vitamin C, ascorbate, exists as the enediolate, an electron rich species that can give up one electron to a partner molecule by a low energy path to give the ascorbate semiquinone radical anion. The most famous role for vitamin C involves such one electron transfers to reactive oxygen (and nitrogen) radical species to intercept and shut down radical cascade reactions. In addition, vitamin C can serve as electron do
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Kitaoka, Yuki, and Junji Yodoi. "Measurement of proteinaceous plasma antioxidants, low molecular weight antioxidants, and redox related compounds." In Experimental protocols for reactive oxygen and nitrogen species. Oxford University PressOxford, 2000. http://dx.doi.org/10.1093/oso/9780198506683.003.0013.

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Abstract Adult T cell leukaemia-derived factor (ADF), originally defined as an inducer of interleukin 2 receptor/ot chain (IL-2R/p55) of human T-lymphotropic virus type I (HTLV-I) positive T cells, is a human analogue of the redox-active coenzyme thioredoxin of Escherichia coli. ADF/thioredoxin contains a redoxactive dithiol (-Cys-Gly-Pro-Cys-) and has a variety of biological activities as a hydrogen donor, including dithiol-dependent reducing activity and radical scavenging activity.
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Fujii, Junichi. "NO-generating system." In Experimental protocols for reactive oxygen and nitrogen species. Oxford University PressOxford, 2000. http://dx.doi.org/10.1093/oso/9780198506683.003.0006.

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Abstract Nitric oxide (NO) produced by nitric oxide synthases (NOS) in vivo plays multiple roles in the body. There are three NOS isozymes whose tissuedistribution and regulation are variable. Effects of NO produced by NOS, which is expressed constitutively or induced by various stimuli, can be examined in vitro and in vivo. Precise control of NO production by NOS in vivo or in culture is, however, not possible. Because NO is such a simple molecule and a fairly stable radical, NO gas and NO donors are available for various experiments. If high concentrations are required, NO gas can be used by
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Choudhary, Sakshi, Archana Kumari, Rajesh Kumar, Sahil Kumar, and Rajesh K. Singh. "Progress in Nitrogen and Oxygen-based Heterocyclic Compounds for their Anticancer Activity: An Updates (2017-2020)." In Key Heterocyclic Cores for Smart Anticancer Drug–Design Part I. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815040074122010009.

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Cancer, which is spreading throughout the world, is quickly becoming the leading cause of major fatalities. The most difficult task for global researchers today is to develop anticancer leads with minimal side effects. Heterocyclic chemistry is an important and unique class of medicinal chemistry as a large number of drugs being used in chemotherapy have a heterocyclic ring as their basic structure, in spite of various side effects. Because of the presence of heteroatoms such as oxygen, nitrogen, and sulphur, heterocyclic compounds can be used as hydrogen bond donors and acceptors. As a result
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Sergeevna Ageeva, Liliya, Nikolai Alekseevich Borsch, and Nikolay Vladimirovich Kuvardin. "2(4)-Aminopyridines as Ligands in the Coordination and Extraction Chemistry of Platinum Metals." In Exploring Chemistry with Pyridine Derivatives. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.106376.

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The specific behavior of aromatic amines in the coordination and extraction processes of isolation and separation of platinum and other metals is discussed using the example of 2(4)-aminopyridines (2(4)-AP). As intrasphere ligands, 2(4)-AP have a high electron-donor capacity due to the pumping of an easily polarizable π-electron density. The chemistry of the extraction of platinum metals, iridium in particular, is considered: depending on the conditions, ion associates, coordination-solvated compounds or compounds containing an amine in the inner and outer coordination sphere of the metal are
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Sharma, Shweta, Mymoona Akhter, and Rajesh Kumar Singh. "Understanding Promising Anticancer Targets for Heterocyclic Leads: An Introduction." In Key Heterocyclic Cores for Smart Anticancer Drug–Design Part II. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815040043122020004.

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With the second-highest cause of mortality in the world, cancer becomes a major threat around the globe. In the last few decades, heterocyclic compounds, obtained naturally or synthetically, have been developed as a potential scaffold for developing many anticancer drugs. Heterocyclic compounds due to heteroatoms such as oxygen, nitrogen and sulphur can be employed as hydrogen bond donors as well as acceptors. Thus, they can bind suitably to pharmacological targets and receptors via intermolecular H-bonds more effectively, giving pharmacological effects. They can also alter liposolubility, hen
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Raspertova, Ilona, and Rostyslav Lampeka. "COPPER COORDINATION COMPOUNDS BASED ON PYRIDYL-1,2,4-TRIAZOLES: STRUCTURE, CHARACTERIZATION AND APPLICATIONS." In Theoretical and practical aspects of science development. Publishing House “Baltija Publishing”, 2023. http://dx.doi.org/10.30525/978-9934-26-355-2-13.

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The functional properties of copper complexes strongly depend on the coordination environment of the central atom. There are many works devoted to the study of the properties of N,N-donor ligands. The substituted dipyridyls and phenanthrolines have become widely used. The disadvantage of these ligand systems is the difficulty of the synthesis of functionalized derivatives. Thus, they were replaced by pyridyl-azoles. A special place among them is occupied by pyridyl-1,2,4-triazoles. They have a number of advantages, in particular, the convenience of methods for the synthesis of 1,2,4-triazoles
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Das, Ankan. "PLANT-MICROBE INTERACTIONS: A BRIEF OVERVIEW." In Research in Biological Sciences - Challenges and Opportunities. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/nbennurrbch7.

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Interactions between plants and microbes significantly impact how plants behave, grow, and evolve. Numerous microbial species, such as bacteria, fungi, viruses, and archaea, which colonise the rhizosphere, phyllosphere, and endosphere of the plant, are involved in these complex associations. Depending on the traits and functions of the microorganisms and how they affect the plant, these interactions may be advantageous or detrimental. Positive relationships between plants and microorganisms are crucial for nutrient uptake, stress tolerance, and disease resistance. Plant-associated microorganis
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Conference papers on the topic "Nitrogen Donor Molecules"

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Azizah, Ninna Arifatun Nurul, Sentot Budi Rahardjo, Witri Wahyu Lestari, and Soerya Dewi Marliyana. "Synthesis and Characterization of Copper Complex Chelated with Phenobarbital Ligand." In 8th International Conference on Advanced Material for Better Future. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-n2rlar.

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The research is intended to synthesize copper(II) with Phenobarbital (PB) complex in 1 : 4 mole ratio. The sole reflux method is designated to synthesize reactant within methanol solvent. Cu(II) complex is characterized using Atomic Absorption Spectrophotometry (AAS), UV-Vis Spectrophotometer, Fourier-transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Conductivity meter, and Magnetic Susceptibility Balance (MSB). The Cu(II)-PB complex signified 1 absorption peak at 517.5 nm with 2Eg → 2T2g transition. Complex is then composed by 6 electron donors of Cu ion-bound ligand,
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COROPCEANU, Eduard. "Synthesis and study of the useful properties of some coordination compounds with ligands containing nitrogen and oxygen atoms as electron donors." In International Congress "Research – Innovation – Innovative Entrepreneurship". Ion Creangă Pedagogical State University, 2024. https://doi.org/10.46727/c.17-18-05-2024.p31-38.

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The synthesis of a series of coordination compounds with ligands containing electrondonor atoms (N, O) with mono-, di- and polymeric structure was carried out. It was found that the nature of the complex-generating metal ion, of the molecules used as coordinating agents (the content of electron donor atoms, their topology in the molecule, the dimensionality of the molecule, etc.) influences the molecular architecture of the new complexes and the properties manifested. For a series of compounds, useful properties have been identified in the field of stimulating biosynthetic processes in microor
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Lima, Francisco José Santos. "MOLECULAR MODELING, REACTIVITY PARAMETERS AND SPECTROCHEMIC STUDIES OF ε-CAPROLACTAM AND o-PHENANTROLINE". У SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE. DR. D. SCIENTIFIC CONSULTING, 2022. http://dx.doi.org/10.48141/sbjchem.21scon.01_lima.pdf.

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In this work, molecular models were obtained, and the reactivity parameters of ε-caprolactam and ophenanthroline were calculated to evaluate the interaction in the formation of complex molecular compounds. It was observed that the main electron donor atoms, in the formation of the metal-ligand bond, are centered mainly on the oxygen and nitrogen atoms, respectively, which are sterically more favorable in these species. Conductance measurements in an aqueous solution were obtained to observe the electrolytic behavior of these compounds. Infrared spectra were also recorded to characterize vibrat
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Ross, Jennifer, Nathan Newman, and Mike Rubin. "GaN for short-wavelength light emitting devices: growth kinetics and techniques." In Compact Blue-Green Lasers. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/cbgl.1993.cthc.3.

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In the recent year, great steps have been achieved in the development of blue-green semiconductor diode lasers and LEDs, however material issues in the wide-bandgap semiconductors still limit practical device applications. The II-VI compounds ZnSe and ZnS and the III-V semiconductors GaN and AIN are the two material system being investigated for green to ultra- violet light emitting devices, with most research to date concentrating on the II-VI materials. Problems with electromigration, heating, and subsequent processing in early ZnSe/ZnS laser diodes has led many researchers to investigate th
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