Crystal structures of the Lewis acid-base adducts {[(CH)N]Ti-}[MeB(CF)]·1.5CH; LB = (CH)PO (1), -F-CHCN (2).

The reaction of [(CH)N]Ti-CH with the Lewis acid B(CF), followed by addition of the Lewis bases (CH)PO and -F-CHCN led to the complex salts tris-(di-cyclo-hexyl-amido)(tri-phenyl-phosphine oxide)titanium methyl-tris(penta-fluoro-phen-yl)borate toluene sesquisolvate, [Ti(CHN)(CHOP)](CHFB)·1.5CH, (), and tris-(di-cyclo-hexyl-amido)(4-fluoro-benzo-nitrile)-titanium methyl-tris-(penta-fluoro-phen-yl)borate toluene sesquisolvate, [Ti(CHN)(CHFN)](CHFB)·1.5CH, (), both crystallizing with 1.

Tetra-kis(di-cyclo-hexyl-amido)-zirconium(IV).

The reaction of ZrCl with three equivalents of LiNCy (Cy is cyclo-hex-yl) resulted in the formation of tris-(di-cyclo-hexyl-amido)-zirconium chloride and the title compound, [Zr(CHN)]. The latter is isotypic with its cerium(IV) analogue and crystallizes with three independent mol-ecules in the asymmetric unit. One mol-ecule is located about a twofold rotation axis, and the other two on fourfold inversion axes.