95552-66-2Relevant academic research and scientific papers
Adventures in vanadocene chemistry
Choukroun, Robert,Lorber, Christian
, p. 4683 - 4692 (2007/10/03)
This review surveys some aspects of the chemistry of [VCp2]. The high potential of vanadocene [VCp2] (and [V(CO)Cp2]) in organometallic chemistry is illustrated by new organometallic architectures. The rich redox chemistry of [VCp2] is shown by incorporation of this fragment into various C≡C and C≡N bonds. This molecular approach allows the connection of two (or more) paramagnetic centers through an organic linker in order to build magnetic nanoscopic organometallic wires. [VCp 2] has also been studied in the field of materials such as vanadium carbide (VC) ceramics and in its role as a reducing agent toward elements of groups 8-10 to prepare Fe, Rh, and Pd colloids. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.
Reactivity of substituted acetylenes with [(η5-C5H4CH3) 2ZrH(μ-H)]2. Observation of zirconacyclopentadiene formation and acetylene hydrogenation
Jones, S. Bart,Petersen, Jeffrey L.
, p. 966 - 971 (2008/10/08)
The reactivity of [(η5-C5H4CH3) 2ZrH(μ-H)]2 with various substituted acetylenes has been investigated. Diphenylacetylene and phenylacetylene react with [η5-C5H4CH3) 2ZrH(μ-H)]2 below 50°C to yield primarily (η5-C5H4CH3) 2Zr(C4(C6H5)4) and the 2,5-diphenyl-substituted isomer of (η5-C5H4CH3) 2Zr(C4(C6H5)2H 2), respectively. Under appropriate conditions substantial hydrogenation of diphenylacetylene to trans-stilbene and phenylacetylene to ethylbenzene, respectively, is observed. These results suggest that at least two competing processes - zirconacyclopentadiene formation and acetylene hydrogenation - are present. Complementary EPR studies for the reactions of [(η5-C5H4CH3) 2ZrH(μ-H)]2 with diphenylacetylene, 1-phenylpropyne, and 2-butyne have further revealed the formation of a paramagnetic zirconocene species (η5-C5H4CH3) 2Zr(H)(RC≡CR). The possible participation of this adduct in the acetylene chemistry of [(η5-C5H4CH3) 2ZrH(μ-H)]2 is discussed.
