Saa. Shah et al., DERIVATIVES OF GROUP-4 METAL AMIDE CHLORIDES AND FLUORIDES - SYNTHESIS, STRUCTURE AND CHARACTERIZATION OF NOVEL DIMETHYL AND FLUORO-CHLORO COMPLEXES, Journal of the Chemical Society. Dalton transactions, (21), 1996, pp. 4143-4146
Reaction of MgMeBr with [MCl(2)L(2)] and [MCl(2)(eta-C(5)Me(5))L] [L =
(2,6-(Pr2C6H3)-C-1)N(SiMe(3)), M = Zr or Hf] gave the corresponding d
imethyl complexes [MMe(2)L(2)] (M = Zr 1a or Hf 1b) and [MMe(2)(eta-C(
5)Me(5))L] (M = Zr 2a or Hf 2b). Reaction of [ZrF(2)L(2)] with AlMe(3)
also yielded 1a. The structures of 1a and 2a have been determined by
single-crystal X-ray crystallography. Upon reaction of 1 molar equival
ent of SnMe(3)F with [MCl(2)L(2)] and [MCl(2)(eta-C(5)Me(5))L] mixed f
luoro-chloro complexes, [MCl(F)L(2)] (M = Zr 3a or Hf 3b) and [MCl(F)(
eta-C(5)Me(5))L] (M = Zr 4a or Hf 4b) were formed, via elimination of
SnMe(3)Cl. The structure of 4a has been determined by single-crystal X
-ray analysis.