Chlorobis(η5-methylcyclopentadienyl)(2,3,4,5,6-pentafluorophenyl)titanium(IV)

Abstract

This may be due to a repulsive interaction between the F1 and Cll atoms, because the Ti and C1 atoms lie in the plane of the pentafluorophenyl ring [with respective deviations of 0.016 and 0.004(2)A, and a mean deviation of the 11 ring atoms from the ring plane of 0.007 A], which almost ideally bisects the interplanar angle between the methylcyclopentadienyl tings [51.08 (11)°; the interplanar angle between cyclopentadienyl (Cp) ring 1 and C6F5 is 25.86 (13) (Received 23 April 1996; accepted 28 May 1996) AbstractThe title compound, [TiCI(C6Fs)(C6H7)2], displays distorted tetrahedral geometry at the Ti atom, as is also observed in other bis(cyclopentadienyl) complexes of titanium(IV). The C1 and the Ti atoms lie in the pentafluorophenyl plane, which bisects the interplanar angle between the methylcyclopentadienyl rings.

Synthesis and Characterization of Pentachlorophenyl–Metal Derivatives with d0 and d10 Electron Configurations

“…[41] Higher electron density at the metal center achieved through: 1) dp±pp interaction, 2) higher coordination numbers, or 3) presence of anionic p-ligands, result in longer Ti iv ÀC(sp 2 ) bond lengths, as for instance in [Ti(C 6 F 5 ) 2 (NPtBu 3 ) 2 ] (TiÀC 219.8(3) and 220.8(3) pm), [42] [TiPh 2 (Me 2 ATI) 2 ] (TiÀC 217.0(3) and 218.5(3) pm; Me 2 ATI = N,N'-dimethylaminotroponiminato-k 2 N), [43] and [Ti(h 5 -C 5 H 4 Me) 2 (C 6 F 5 )Cl] (TiÀC 225.9(2) pm). [44] The decrease in the TiÀC distance (by ca. 9 pm) on going from 1' to 2 can be attributed to the increase in the oxidation state of the metal.…”