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The crystal and molecular structure of μ-oxalatobis[di(η5-cyclopentadienyl)titanium]

1981; Elsevier BV; Volume: 212; Issue: 3 Linguagem: Inglês

10.1016/s0022-328x(00)85660-0

1872-8561

Frank Bottomley, Ivan J. B. Lin, Peter S. White,

Crystallography and molecular interactions

μ-Oxalatobis[di-(η5-cyclopentadienyl)titanium], [μ-(C2O4) {(η5-C5H5)2Ti}2], 0.5 (C2H5)2O crystallises in the orthorhombic space group Pbcn with a 17.228(13), b 12.224(13), c 30.309(23) Å and Z = 12. The final R was 0.061 (Rw 0.104). The oxalato group acts as a planar tetradentate bridging ligand, with the Ti atoms displaced in a cis fashion cut of the C2O42− plane. The reason for this displacement is analysed in terms of σ and π interaction between the metal and ligand, and steric contacts between the Cp rings. Comparison with the iso-electronic [μ-{C2(N(C6H4CH3-p))4} {(η5-C5H5)2Ti}2] is made.