[(p-MeC6H4N2)Fe(CO)(PPh3)2X] and [(NO)Fe(CO)(PPh3)2X] respectively. The corresponding azide salt reacts with the p-toluenediazo-cation to yield only [(p- MeC6H4N2) Fe(CO)(PPh3)2N3]. With the nitrosyl analogue, this reaction gives both [(NO)Fe(CO)(PPh3)2N3] and [(NO)Fe(CO)(PPh3)2NCO]. These results are interpreted in terms of the ArN2+ ligand being a poorer π-acceptor than the NO+ group.
与亚
硝酰基类似物不同,
苯重
氮阳离子[(PhN 2)Fe(CO)2 L 2 ] +(L = PPh 3,
PMePh 2或
PMe 2 Ph)几乎对取代过量的羰基呈惰性仅在L = P (OCH 2)3 CMe}的情况下才检测到三取代阳离子的形成。离子[[ p -MeC 6 H 4 N 2)Fe(CO)2(PPh 3)2 ] +和[(NO)Fe(CO)2(PPh 3)2] +与(Ph 3 P N PPh 3)+ X –(X = Cl或Br)平稳反应,生成新的络合物[(p -MeC 6 H 4 N 2)Fe(CO)(PPh 3)2 X]和分别为[(NO)Fe(CO)(PPh 3)2 X]。相应的
叠氮化物盐与对
甲苯二
甲酰基阳离子反应,仅生成[(p -MeC 6 H 4 N 2)Fe(CO)(PPh 3)2 N 3]。用亚
硝酰基类似物,该反应既产生[(NO)Fe(CO)(PPh 3)2 N 3 ],又产生[(NO)Fe(CO)(PPh