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Titolo:
Some bimetallic half sandwich iron complexes with metal carbene substitution at the cyclopentadienyl ligand: synthesis, characterization, structure, and cyclic voltammetry
Autore:
Behrendt, U; Pfeifer, RM; Wartchow, R; Butenschon, H;
Indirizzi:
Univ Hannover, Inst Organ Chem, D-30167 Hannover, Germany Univ Hannover Hannover Germany D-30167 n Chem, D-30167 Hannover, Germany Univ Hannover, Inst Anorgan Chem, D-30167 Hannover, Germany Univ HannoverHannover Germany D-30167 n Chem, D-30167 Hannover, Germany
Titolo Testata:
NEW JOURNAL OF CHEMISTRY
fascicolo: 8, volume: 23, anno: 1999,
pagine: 891 - 895
SICI:
1144-0546(199908)23:8<891:SBHSIC>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
HETEROBIMETALLIC INDENYL COMPLEXES; CYCLOBUTENYLIDENE COMPLEXES; CHEMISTRY; DINUCLEAR; BOND;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Butenschon, H Univ Hannover, Inst Organ Chem, Schneiderberg 1B, D-30167 Hannover, Germany Univ Hannover Schneiderberg 1B Hannover Germany D-30167 any
Citazione:
U. Behrendt et al., "Some bimetallic half sandwich iron complexes with metal carbene substitution at the cyclopentadienyl ligand: synthesis, characterization, structure, and cyclic voltammetry", NEW J CHEM, 23(8), 1999, pp. 891-895

Abstract

The first half sandwich cyclopentadienyl complexes 2-5 with a carbene complex subtituent at the cyclopentadienyl ring are presented. These complexes deserve interest because one metal atom (Cr, Mo, W, Fe) is incorporated in the pi system of the ligand in conjugation to the cyclopentadienyl ring complexed to iron. In addition to intermetallic interactions these complexes offer the possibility of reactions at both metal atoms. An X-ray structure analysis of 2 reveals, however, that the carbene-chromium pi bond is not perfectly coplanar with the cyclopentadienyl ring. Cyclic voltammetry of some of the complexes prepared shows a decrease in oxidation potential upon carbene complex substitution at the cyclopentadienyl ring for 2 and 7 by 118 and 63 mV, respectively. a ligand exchange reaction with bis(diphenylphosphino)ethane (dppe) under irradiation results in the incorporation of two dppe molecules.

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Documento generato il 21/09/20 alle ore 18:16:44