Journal article
An alkylidene-tethered tantallanorbornadiene from reduction of a tantalum(phenylalkenyl)alkylidene derived from 3,3-diphenylcyclopropene ring opening by (η-C5Me4R)2Ta2(μ-X)4 (TaTa)
Inorganica Chimica Acta, Vol.345, pp.209-215
03/2003
DOI: 10.1016/S0020-1693(02)01351-8
Abstract
The terminal (diphenylalkenyl)alkylidene complexes (C5Me4R)Ta(CHCHCPh2)X2 (R=Me, Et; X=Cl, Br) are formed in moderate yields from the ring-opening reaction of 3,3-diphenylcyclopropene with the organoditantalum(III) halides (η-C5Me4R)2Ta2(μ-X) 4. Potassium amalgam reduction of these alkenylalkylidene complexes afforded the alkylidene-tethered tantallanorbornadienes (C5Me4R)Ta[CHCHCPh(σ2-C6H 5)], which possess a bent, boat conformation σ2-arene ligand with a fold angle of 19.24(46)° (R=Me) in the solid state. 13C and 1H NMR spectroscopies are consistent with a rapid flip-flop motion that averages the resonances of the σ2-phenyl group to fewer resonances than expected from the solid-state structure. © 2002 Elsevier Science B.V. All rights reserved.
Details
- Title: Subtitle
- An alkylidene-tethered tantallanorbornadiene from reduction of a tantalum(phenylalkenyl)alkylidene derived from 3,3-diphenylcyclopropene ring opening by (η-C5Me4R)2Ta2(μ-X)4 (TaTa)
- Creators
- Jui-Hsien HuangTing-Yu LeeDale C SwensonLouis Messerle
- Resource Type
- Journal article
- Publication Details
- Inorganica Chimica Acta, Vol.345, pp.209-215
- DOI
- 10.1016/S0020-1693(02)01351-8
- ISSN
- 0020-1693
- eISSN
- 1873-3255
- Language
- English
- Date published
- 03/2003
- Academic Unit
- Chemistry; Radiology
- Record Identifier
- 9984216726102771
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