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KEY STRUCTURAL FEATURES IN ELECTROCHEMISTRY OF Cr(0) AND Fe(0) AMINOCARBENE COMPLEXES

SYSNO ASEP	0361580
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	KEY STRUCTURAL FEATURES IN ELECTROCHEMISTRY OF Cr(0) AND Fe(0) AMINOCARBENE COMPLEXES
Author(s)	Hoskovcová, I. (CZ) Dvořák, D. (CZ) Tobrman, T. (CZ) Záliš, Stanislav (UFCH-W)_{RID, ORCID} Ludvík, Jiří (UFCH-W)_{RID, ORCID}
Source Title	New Trends in Coordination, Bioinorganic and Applied Inorganic Chemistry. - Bratislava : Slovak University of Technology, 2011 / Melník M. ; Segĺa P. ; Tatarko M. - ISBN 978-80-227-3509-4
Pages	s. 155-169
Number of pages	16 s.
Action	International Conference on Coordination and Bioinorganic Chemistry /23./
Event date	05.06.2011-10.06.2011
VEvent location	Smolenice
Country	SK - Slovakia
Event type	WRD
Language	eng - English
Country	SK - Slovakia
Keywords	electrochemistry ; aminocarbene complexes
Subject RIV	CG - Electrochemistry
R&D Projects	IAA400400813 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
Annotation	In our study, we have electrochemically investigated oxidation and reduction of about 40 chelated and non-chelated aminocarbene complexes of chromium (n=5) and iron (n=4) where R stands for p-substituted benzene ring or a heterocycle. Eox and Ered values were treated by the Linear Free Energy Relationship (LFER) approach to find the type of structural modifications responsible for their changes. Potential of oxidation depends on the nature of the central metal atom and on the presence of pi-accepting ligands. Eox of the Cr complexes reflects only the number of CO ligands. Behaviour of the Fe compounds, with lower coordination number and shorter M – L bonds, shows that the eta2-bonded allyl group and the carbene double bond also act as important pi-acceptors. Ered is governed mainly by substitution of the carbene carbon atom and it is sensitive to the presence of a pi-conjugated electron system.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2012

Number of the records: 1