basicity of the sulfur atom in (CH3)2B-S-B(CH3)2 and (CH3)3Sn-S-B(CH3)2 leads to slow polymerisation of these compounds. (C6H5)2P-S-B(CH3)2 probably is a dimer with a six-membered B-S-P ring. [(CO)4Mn-S-B(CH3)2]2 is the first thermally stable transition metal complex of a boron-sulfur compound. The Lewis acidity of the thio dimethylboranes is responsible for adduct formation with Lewis bases. Their Lewis
R n X = H,CH 3,C 6 H 5,B(CH 3)2,Sn(CH 3)3,P(C 6 H 5)的
硫代二
甲基硼烷R n X-
SB(CH 3)2的制备)2中描述了As(CH 3 2和Mn(CO)4。)(CH 3)2 B-
SB(CH 3)2和(CH 3)3 Sn-
SB(CH )中
硫原子的高路易斯碱性3)2导致这些化合物的缓慢聚合。(C 6 H 5)2 P-
SB(CH 3)2可能是带有六元
BSP环的二聚体。[(CO)4 Mn-
SB(CH 3)2 ] 2是
硼-
硫化合物的第一热稳定过渡
金属络合物。
硫代二
甲基硼烷的
路易斯酸度负责与路易斯碱形成加合物。他们的路易斯碱度不足以锍盐的形成[(R 2 B)2-正SR Ñ 1 ] + X - 。相反,亲电试剂会裂解
硼-
硫键。