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[Cp 2 V( μ ‐ η 2 : η 4 ‐butadiyne)MCp 2 ′] (M=Ti, Zr; Cp′=C 5 H 5 , C 5 H 4 SiMe 3 ): Heterodimetallic Complexes from a Bis(alkynyl)metallocene and Vanadocene—Unexpected Structure of [Cp 2 V( μ ‐ η 2 : η 4 ‐butadiyne)Zr(C 5 H 4 SiMe 3 ) 2 ] Containing Two Planar‐Tetracoordinate Carbon Atoms
Author(s) -
Danjoy Christine,
Zhao Jianshe,
Donnadieu Bruno,
Legros JeanPierre,
Valade Lydie,
Choukroun Robert,
Zwick Antoine,
Cassoux Patrick
Publication year - 1998
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/(sici)1521-3765(19980615)4:6<1100::aid-chem1100>3.0.co;2-6
Subject(s) - metallocene , vanadium , moiety , zirconium , crystallography , tetracoordinate , carbon fibers , titanium , materials science , chemistry , stereochemistry , planar , metallurgy , polymerization , composite material , computer science , polymer , computer graphics (images) , composite number
Titanium–vanadium and zirconium–vanadium complexes are obtained from the reaction between bis(phenylethynyl)titanocene, or ‐zirconocene, and vanadocene. The X‐ray structure analysis of [Cp 2 V( μ ‐ η 2 ‐ η 4 ‐butadiyne)Zr(C 5 H 4 SiMe 3 ) 2 ] (depicted on the right) reveals that the [Cp 2 V] metallocene moiety is bonded to a butadiene (or butadiyne) framework through the two internal carbon atoms and that the [(C 5 H 4 SiMe 3 ) 2 Zr] moiety is bonded to this unit through the two internal carbon atoms and the two external carbon atoms. Both internal carbon atoms of the butadiene skeleton are planar‐tetracoordinate.