The reaction of an excess of the transient terminal phosphinidene complex [PhPâW(CO)5] with selected 1,3-diynes at 110 °C in toluene affords the corresponding 2,2â²-biphosphireneâW2(CO)10 complexes as a 1â¶1 meso + rac mixture; according to the X-ray crystal structure analysis of one of the rac-complexes, some delocalisation takes place within the diene sub-unit of these biphosphirenes.
过量的瞬态末端亚膦络合物[PhPâW(CO)5]与选定的 1,3-二炔在 110°C 的
甲苯中发生反应,生成相应的 2,2â²-
双膦炔âW2(CO)10 络合物,即 1â¶1 meso + rac 混合物。