作者:J.L. Roustan、J.Y. Merour、C. Charrier、J. Bena、P. Cadiot
DOI:10.1016/s0022-328x(00)81453-9
日期:1979.4
η3-Allylcyclopentenone complexes of molybdenum and tungsten are obtained by treating homoallenic bromides with η5-cyclopentadienyl-molybdenum or -tungsten tricarbonyl anions. Conformational equilibria were observed and studied by NMR. The results can be explained by assuming that the dominant factor is a steric interaction between the cyclopentadienyl ring and the substituents on the η3-allyl ligand
η 3个钼和钨的-Allylcyclopentenone络合物通过与η处理homoallenic溴化物得到5 -环戊二烯基-钼-钨或三羰基阴离子。通过NMR观察并研究了构象平衡。结果可通过假设的主导因素是环戊二烯基环和在η上的取代基之间的空间相互作用来解释3 -烯丙基配体。根据NMR数据,其中一种化合物为B exo构型。这个结论是由一项使用X射线衍射技术的独立研究所断言的。