Synthesis of cationic Group 4 metal compounds by protonolysis of amide precursors: crystal structure of [Ti(NMe2)3(NC5H5)2][BPh4]
摘要:
Protonation of [M(NMe2)(4)] with NHEt3BPh4 in tetrahydrofuran (THF) gave the cationic compounds [M(NMe2)(3)(THF)(x)][BPh4] (M = Ti and x = 1; M = Zr or Hf and x = 2); similar treatment of [M(cp)(2)(NMe2)(2)] (M = Zr or Hf, cp = eta-C5H5) afforded the cations [M(cp)(2)(NMe2)(NMe2H)(1-x)(THF)(x)](+) which were transformed into [M(cp)(2)(NMe2)(NC5H5)](+) in pyridine. The trigonal bipyramidal crystal structure of [Ti(NMe2)(3)(NC5H5)(2)][BPh4] has been determined.
Pentaarylfullerenes as Noncoordinating Cyclopentadienyl Anions
作者:Marco W. Bouwkamp、Auke Meetsma
DOI:10.1021/ic802034m
日期:2009.1.5
The first example of an early-transition-metal complex involving a pentaarylfullerene was prepared. Instead of half-sandwich complexes, solvent separated ion pairs were obtained in which the pentaarylfullerene moiety acts as noncoordinating cyclopentadienyl anion.