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Crystal structure and dynamic behavior of [Ni{PhNHC(S)NP(S)(OPr i)2-S,S}2] complex in dichloromethane solution

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dc.contributor.author Brusko V.
dc.contributor.author Rakhmatullin A.
dc.contributor.author Shtyrlin V.
dc.contributor.author Krivolapov D.
dc.contributor.author Litvinov I.
dc.contributor.author Zabirov N.
dc.date.accessioned 2018-09-18T20:07:48Z
dc.date.available 2018-09-18T20:07:48Z
dc.date.issued 2006
dc.identifier.issn 0277-5387
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/136798
dc.description.abstract The crystal structure of the complex [Ni{PhNHC(S)NP(S)(OPr i)2-S,S}2] has been determined and its behavior in dichloromethane solution investigated by NMR 31P spectroscopy. The X-ray structural analysis shows the nickel atom at the symmetry center in a distorted square-planar arrangement with trans-disposition of the ligands. The six-membered cycle NiS(1)PNCS(2) has the form of the asymmetric boat. In dichloromethane solutions of the compound four signals have been detected by 31P-{1H} NMR method. These signals are related to three diamagnetic square-planar isomers with different dispositions and conformations of two ligands in anti-orientation: trans-chair-boat (A), cis-boat-boat (B), and trans-boat-boat (C). These isomers are in slow exchange equilibria. It was shown that all these forms are in rather fast chemical exchange with minor (unobserved) paramagnetic pseudo-tetrahedral isomers (AT, B T, and CT). The thermodynamic constants of equilibria between A, B, and C as well as rate constants and activation parameters for conversion of three square-planar to respective pseudo-tetrahedral forms were calculated from the 31P-{1H} NMR data. © 2005 Elsevier Ltd. All rights reserved.
dc.relation.ispartofseries Polyhedron
dc.subject Chelates
dc.subject Chemical exchange
dc.subject Isomers
dc.subject Nickel
dc.subject S ligands
dc.subject Thermodynamic
dc.title Crystal structure and dynamic behavior of [Ni{PhNHC(S)NP(S)(OPr i)2-S,S}2] complex in dichloromethane solution
dc.type Article
dc.relation.ispartofseries-issue 6
dc.relation.ispartofseries-volume 25
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 1433
dc.source.id SCOPUS02775387-2006-25-6-SID33645082218


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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