1-Methylimidazolin-2-yl functionalized cyclopentadienyl complexes of titanium and zirconium. Crystal structure of {[η5:η1-κN-C5H4CPh2CH2-(1-Me–C3H4N2)]ZrCl2}2(μ-Cl)2
作者:Wanli Nie、Longyu Liao、Wenqing Xu、Maxim V. Borzov、Dmitrii P. Krut’ko、Andrei V. Churakov、Judith A.K. Howard、Dmitri A. Lemenovskii
DOI:10.1016/j.jorganchem.2008.04.015
日期:2008.6
investigated by means of variable-temperature NMR spectroscopy in solutions. The molecular structures of the dihydropentalene 4, binuclear complex [η5:η1-κN-C5H4CPh2CH2-(1-Me–C3H4N2)]ZrCl2}2(μ-Cl)28, and a coordination dimer of the dilithium salt 2a have been established by X-ray diffraction analysis. In the crystal structure of the 2a-dimer, the shortest known Li–Li contact has been found.
制备了新型的双齿配体C 5 H 4 CPh 2 CH 2-(1-Me–C 3 H 4 N 2)(3),并将其表征为锂盐LiC 5 H 4 CPh 2 CH 2-(1 -Me–C 3 H 4 N 2)(3 – Li)。环戊二烯HC 5 H 4 CPh 2 CH 2-(1-Me–C 3 H 4 N 2)(3 –H)已经从6,6-二苯基富烯和1,2-二甲基咪唑啉(1)获得。在1存在下的THF- d 8溶液中,已证明(1-甲基咪唑啉-2-基)甲基锂(2)逐渐转化为N 1-甲基-N 2 -[(1 E, 2 E)-1-甲基-2-(1-甲基咪唑烷-2-亚乙基)亚乙基]乙烷-1,2-二胺(2a)。在溶液中,环戊二烯3 - H已显示出异构化成3- N- [2-(N-甲基氨基)乙基]氨基} -1,1-二苯基-1,2-二氢戊烯(4),进而形成4和两种旋转异构体3- [ N-(2-氨基乙基)-N-甲基氨基]-的混合物1