AsPh3) and [MI3(CO)3(SbPh3)]− (M=Mo, W) have been investigated using the 121Sb, 57Fe and 127I Mössbauer spectroscopy. Coordination of SbR3 to the transition metal atom results in the increase in the values of isomer shift and the decrease in the values of quadrupole coupling constant of the 121Sb Mössbauer spectra. This indicates that the lone pair electron of the stibine is transferred to the transition
五坐标或六坐标[M(CO)n(SbR 3)]中的
锑过渡
金属键(M = Fe,Ru;n = 4,M = Cr,Mo,W;n = 5,R = Me, Ph),七坐标[MI 2(CO)3(SbPh 3)L] -(M = Mo,W,L = PPh 3,AsPh 3)和[MI 3(CO)3(SbPh 3)] -( M = Mo,W)已使用121 Sb,57 Fe和127 IMössbauer光谱进行了研究。SbR 3的配位过渡
金属原子产生的杂原子导致121 SbMössbauer光谱的异构体位移值增加和四极偶合常数值减小。这表明
锑的孤对电子被转移到过渡
金属原子上。转移程度按Mo