Chromium, iron, ruthenium and gold complexes of 3,3-(biphenyl-2,2′-diyl)-1-diphenylphosphino-1-phenylallene: A versatile ligand
作者:Emilie V. Banide、John P. Grealis、Helge Müller-Bunz、Yannick Ortin、Michael Casey、Claudio Mendicute-Fierro、M. Cristina Lagunas、Michael J. McGlinchey
DOI:10.1016/j.jorganchem.2008.01.046
日期:2008.5
time-scale even at room temperature. The corresponding chromium complex, (5)-Cr(CO)5 (9), has also been prepared. The gold complexes (5)-AuCl (13), and [(5)-Au(THT)]+ X−, where (THT) is tetrahydrothiophene, and X = PF6 (14a), or ClO4 (14b), are analogous to the known triphenylphosphine–gold complexes. In contrast, in the (arene)(allenylphosphine)RuCl2 system the allene double bond adjacent to phosphorus displaces
用HBr,丁基锂和氯二苯基膦连续处理9-(苯基乙炔基)芴-9-ol(1a),得到3,3-(联苯基-2,2'-二基)-1-二苯基膦基-1-苯基亚勒烯(5)。此外,使1a直接与氯二苯基膦反应,得到相应的烯丙基膦氧化物(6)。烯丙基膦(5)和Fe 2(CO)9最初形成膦-Fe(CO)4络合物11,该络合物对热非常敏感,很容易失去羰基配体。在最终的膦-Fe(CO)3系统中,12,铁上的附加位点由与磷相邻的丙二烯双键配位;即使在室温下,12中的Fe(CO)3三脚架在NMR时标上也显示出受限制的旋转。还已经制备了相应的铬配合物,(5)-Cr(CO)5(9)。金复合物(5)-AuCl(13),和[(5)-Au(THT)] + X - ,其中(THT)是四氢噻吩,和X = PF 6(14A),或C10 4(14B),类似于已知的三苯膦-金络合物。相比之下,在(芳烃)(烯基膦)RuCl 2体系中,与