КФУ. Карточка публикации. Study of structural and dynamic characteristics of copper(II) amino acid complexes in solutions by combined EPR and NMR relaxation methods

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STUDY OF STRUCTURAL AND DYNAMIC CHARACTERISTICS OF COPPER(II) AMINO ACID COMPLEXES IN SOLUTIONS BY COMBINED EPR AND NMR RELAXATION METHODS

Форма представления

Статьи в зарубежных журналах и сборниках

Год публикации

2014

Язык

английский

Авторы, сотрудники КФУ

Ильин Александр Николаевич, автор

Крутиков Александр Александрович, автор

Мамин Георгий Владимирович, автор

Мухтаров Анвар Шарафулисламович, автор

Серов Никита Юрьевич, автор

Штырлин Валерий Григорьевич, автор

Библиографическое описание на языке оригинала

Bukharov M.S. Study of structural and dynamic characteristics of copper(II) amino acid complexes in solutions by combined EPR and NMR relaxation methods / M.S. Bukharov, V.G. Shtyrlin, A.Sh. Mukhtarov, G.V. Mamin, S. Stapf, C. Mattea, A.A. Krutikov, A.N. Il'in, N.Yu. Serov // Phys. Chem. Chem. Phys. – 2014. – V. 16, N 20. – P. 9411-9421.

Аннотация

Structural features and dynamical behaviour of the copper(II) bis-complexes with glycine, D-alanine, D-valine, L-serine, L-aspartic acid, L-glutamic acid, L-lysine, L-proline, and sarcosine were studied by combined EPR and NMR relaxation methods. The cis and trans isomers were unambiguously assigned and characterized by EPR data. It was found that addition of a salt background has an influence on the cis?trans isomer equilibrium in favour of the formation of the cis isomer. By comparison of NMRD, DFT computations, and structural data it was shown that only one water molecule is coordinated in the axial position of these complexes. The increased exchange rates of this molecule found for Cu(L-Asp)22−, Cu(L-Glu)22−, Cu(L-LysH)22+, and Cu(L-Pro)2 were attributed to its pushing out by side chain groups of the ligands. By simulation of NMRD profiles an increase of lifetimes of the copper(II) 2nd coordination sphere water molecules was revealed in the presence of additional carboxylic, alcoho

Ключевые слова

структурные и динамические характеристики, комплексы, медь(II), аминокислоты, растворы, ЭПР, многочастотная ЯМР-релаксация

Название журнала

PHYS CHEM CHEM PHYS

URL

http://pubs.rsc.org/en/content/articlelanding/2014/cp/c4cp00255e#!divAbstract

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https://repository.kpfu.ru/?p_id=83796

Полная запись метаданных

Поле DC	Значение	Язык
dc.contributor.author	Ильин Александр Николаевич	ru_RU
dc.contributor.author	Крутиков Александр Александрович	ru_RU
dc.contributor.author	Мамин Георгий Владимирович	ru_RU
dc.contributor.author	Мухтаров Анвар Шарафулисламович	ru_RU
dc.contributor.author	Серов Никита Юрьевич	ru_RU
dc.contributor.author	Штырлин Валерий Григорьевич	ru_RU
dc.date.accessioned	2014-01-01T00:00:00Z	ru_RU
dc.date.available	2014-01-01T00:00:00Z	ru_RU
dc.date.issued	2014	ru_RU
dc.identifier.citation	Bukharov M.S. Study of structural and dynamic characteristics of copper(II) amino acid complexes in solutions by combined EPR and NMR relaxation methods / M.S. Bukharov, V.G. Shtyrlin, A.Sh. Mukhtarov, G.V. Mamin, S. Stapf, C. Mattea, A.A. Krutikov, A.N. Il'in, N.Yu. Serov // Phys. Chem. Chem. Phys. – 2014. – V. 16, N 20. – P. 9411-9421.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/?p_id=83796	ru_RU
dc.description.abstract	PHYS CHEM CHEM PHYS	ru_RU
dc.description.abstract	Structural features and dynamical behaviour of the copper(II) bis-complexes with glycine, D-alanine, D-valine, L-serine, L-aspartic acid, L-glutamic acid, L-lysine, L-proline, and sarcosine were studied by combined EPR and NMR relaxation methods. The cis and trans isomers were unambiguously assigned and characterized by EPR data. It was found that addition of a salt background has an influence on the cis?trans isomer equilibrium in favour of the formation of the cis isomer. By comparison of NMRD, DFT computations, and structural data it was shown that only one water molecule is coordinated in the axial position of these complexes. The increased exchange rates of this molecule found for Cu(L-Asp)22−, Cu(L-Glu)22−, Cu(L-LysH)22+, and Cu(L-Pro)2 were attributed to its pushing out by side chain groups of the ligands. By simulation of NMRD profiles an increase of lifetimes of the copper(II) 2nd coordination sphere water molecules was revealed in the presence of additional carboxylic, alcoho	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	структурные и динамические характеристики	ru_RU
dc.subject	комплексы	ru_RU
dc.subject	медь(II)	ru_RU
dc.subject	аминокислоты	ru_RU
dc.subject	растворы	ru_RU
dc.subject	ЭПР	ru_RU
dc.subject	многочастотная ЯМР-релаксация	ru_RU
dc.title	Study of structural and dynamic characteristics of copper(II) amino acid complexes in solutions by combined EPR and NMR relaxation methods	ru_RU
dc.type	Статьи в зарубежных журналах и сборниках	ru_RU