is also obtained when (B; M = W) but not (B; M = Mo) is treated with methanol alone, either at reflux or on irradiation at 20 °C for several hours. The mechanism of these reactions and their relevance to the action of nitrogenase is discussed.
用H 2 SO 4处理反式-[M(N 2)2(dppe)2 ](A)(dppe = Ph 2 PCH 2 CH 2 PPh 2,M = Mo或W)得到[M(HSO 4)- (NNH 2)(dppe)2 ] [HSO 4 ]且无
氨或
肼。然而,复合物顺式-[M(N 2)2(PMe 2 Ph)4 ](B)和反式-[M(N 2)2(PMePh 2)4](C)(M = Mo或W)在20°C下与H 2 SO 4在
甲醇中的反应生成
氨(每个W原子约1.9 NH 3和每个Mo原子约0.7 NH 3) (B; M = W)的
肼,但(B; M = Mo)的
肼。用多种其他酸处理(B; M = Mo和W)会产生
氨,但效果不如H 2 SO 4。无
水HBF 4也从(B; M = Mo或W)产生
氨,但(A; M = Mo或W)仅产生反式-[MF(NNH 2)(dppe)2 ] [BF 4 ]。
氨(1.6 NH 3当(B;