Mono- and bis-(2-dimethylaminoethyl)tetramethylcyclopentadienyl zirconium(IV) complexes: synthesis and structural studies in crystalline state and in solutions
作者:Dmitrii P. Krut’ko、Maxim V. Borzov、Roman S. Kirsanov、Mikhail Yu. Antipin、Andrei V. Churakov
DOI:10.1016/j.jorganchem.2003.11.012
日期:2004.2
characterized in three different forms, namely, as an adduct with THF 6a, an adduct with tetrahydrothiophene 6b, and a solvent-free form 6c. Molecular structures of complexes 4, 6b, and 6c have been established by X-ray diffraction analysis. Complex 6c has been shown to be a monomeric solvent-free half sandwich Zr(IV) complex. The dynamic behavior of complex 6a in a non-solvating medium (an equilibrium between
一种新颖的半夹心锆(IV)配合物[η 5:η 1 - ñ -C 5(CH 3)4 CH 2 CH 2 N(CH 3)2 ]的ZrCl 3(6)与二茂锆二氯化物一起[η 5 - ç 5(CH 3)4 CH 2 CH 2 N(CH 3)2 ] [η 5 -C 5(CH 3)5 ]的ZrCl 2(4)和[η制备了5 -C 5(CH 3)4 CH 2 CH 2 N(CH 3)2 ] 2 ZrCl 2(5)。分离出配合物6并以三种不同形式表征,即与THF 6a的加合物,与四氢噻吩6b的加合物和无溶剂形式6c。配合物的分子结构4,图6B,以及图6C是由X射线衍射分析确定。复杂6c业已证明是不含单体的半夹心Zr(IV)络合物。络合物6a在非溶剂介质中的动力学行为(6a和6c之间的平衡以及Zr–C cp –CH 2 –CH 2 –N(CH 3)2 –(Zr)伪五的简并互变-成员金属环已通过可变温度1 H和13