Výsledky vyhledávání - "Leonid E. Nivorozhkin"

Structural variations in nickel(II) and copper(II) MN4Schiff-base complexes with deprotonated tetradentate N,N′-bis(5-aminopyrazol-4-ylmethylene)polymethylenediamine ligands

Autor: Hans Toftlund, Leonid E. Nivorozhkin, Alexander Nivorozhkin, Per Lauge Jørgensen

Publikováno v: J. Chem. Soc., Dalton Trans.. :1215-1221

Two series of copper(II) and nickel(II) complexes [ML1]–[ML6] containing deprotonated tetradentate N,N′-bis(5-aminopyrazol-4-ylmethylene)polymethylene diamine ligands L1–L6 with varying n(2–4) of the bride –HCN(CH2)nNCH– have been prepare

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ae79fa8126db332966ad99802427d397
https://doi.org/10.1039/dt9960001215

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Photochromic and thermochromic spiranes. 19. 2-thioxo-3-phenyl-5,5-diivietiiylspiro (1,3-oxazolidine-4,2?-[2h]chromenes)

Autor: Boris S. Lukyanov, Gennadii S. Borodkin, Leonid E. Nivorozhkin, N. B. Ivanov, Vladimir I. Minkin

Publikováno v: Chemistry of Heterocyclic Compounds. 31:1096-1102

We have synthesized and characterized by IR, UY,1H, and13C NMR spectroscopy new spiropyrans based on 2-thioxo-3 phenyl-5,5-dimethyl-1,3-oxazolidine. We have studied their photochromic properties in 2 propanol at -80°C. In the electronic spectra of p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c5e222c53a0d0fdcd831ccc82c8b4303
https://doi.org/10.1007/bf01165056

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Bis[4-(2,6-dimethylphenyliminomethyl)-5-pyrazolethiolato]nickel(II) complexes with an unusual trans-planar structure

Autor: Alexander L. Nivorozhkin, Bibhutosh Adhikary, Agnete la Cour, Leonid E. Nivorozhkin, Gary D. Fallon, Keith S. Murray, Hans Toftlund

Publikováno v: Inorganica Chimica Acta. 228:237-241

The nickel(II) complexes bis[1-phenyl-3-methyl-4-(2,6-dimethylphenyl)iminomethyl-5-pyrazolethiolato]nickel(II) (1) and bis[1,3-diphenyl-4-(2,6-dimethylphenyl)iminomethyl-5-pyrazolethiolato]nickel(II) (2), based on the 4-imino-methyl-5-thiopyrazole li

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::21d8eb57926e774061c8784c4f1e6cae
https://doi.org/10.1016/0020-1693(94)04171-q

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Stereodynamics and degenerate ligand exchange in solutions of tetracoordinate chelate complexes of nontransition metals

Autor: Leonid E. Nivorozhkin, Vladimir I. Minkin, M. S. Korobov

Publikováno v: Russian Chemical Reviews. 63:289-311

Nontransition metal (d0, d10 ) chelate complexes possessing a tetrahedral configuration at the metal centre undergo fast intramolecular stereoisomerisation and intermolecular ligand exchange reactions in solution. Inversion of the stereochemical conf

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4a05a17b9b91b17b015073b03f48f98
https://doi.org/10.1070/rc1994v063n04abeh000085

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ChemInform Abstract: Synthesis and Structure of 3-Formylquinoline-2(1H)-thione and -selone and the Corresponding Imines

Autor: Leonid E. Nivorozhkin, Alexander Nivorozhkin, L.E. Konstantinovsky, Vladimir I. Minkin

Publikováno v: ChemInform. 23

3-Formylquinoline-2(1 H )-thione and -selone have been prepared; based on 1 H, 13 C and 15 N NMR, UV and IR spectral studies the tautomeric form with a proton located at the heterocyclic nitrogen has been proved to be the most stable for the above al

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bf6f70b8ed621274ecd19d81efe76682
https://doi.org/10.1002/chin.199234235

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