名称:
有机铋化合物中的次级键。2,2',5,5'-四甲基-1,1'-二双二茂铁和2,2',5,5'-四甲基双铋的结构比较
摘要:
The reaction of 1-phenyl-2,5-dimethylbismole (5) with lithium in THF followed by FeCl2 gave red-black crystals of 2,2',5,5'-tetramethyl-1,1'-dibismaferrocene (3), while the reaction of 5 with sodium in liquid ammonia followed by 1,2-dichloroethane gave green crystals of 2,2',5,5'-tetramethylbibismole (4). Single-crystal X-ray diffraction studies show that 3 adopts a ferrocene-like arrangement with a close (3.688 (1) angstrom) inter-ring Bi...Bi contact, while 4 has a zigzag chain of Bi atoms with close intermolecular contacts of 3.6595 (5) angstrom.