opshine) are reported. Ni-S bond distance trans to 4-MP( 1 ) is longer than the distances in ( 2 ) and ( 3 ) and Ni-S bond distances trans to Ni-NCS/CN decrease as follows: ( 3 ) > ( 2 ) > ( 1 ). Particularly, 4-MP shows a highly significant trans influence than triphenylphosphine on Ni-S bond. Similarly, CN− exerts a marginally significant trans influence compared to NCS-. Thioureide C-N distances
通过合成和表征
三苯基膦和假卤素对NiS 2
PN和NiS 2 PC生色团的Ni-S键的 反式 影响。该络合物在〜1530cm -1处显示出特征的
硫脲化物IR谱带。
氰化物类似物的电子光谱相对于其他光谱显示出很强的蓝移。[Ni(pipdtc)(4-MP)(
NCS)]( 1 ),[Ni(pipdtc)(PPh 3)(
NCS)]( 2 )和[Ni(pipdtc)(PPh 3)( CN)]( 3 )(pipdtc =
哌啶碳二
硫代阴离子,4-MP =三(4-甲基苯基)膦)被报道。Ni-S键距反转换为4-MP( 1 )比( 2 )和( 3 )中的距离长, 并且 转移到Ni-
NCS / CN的Ni-S键距离如下减小:( 3 )>( 2 )>( 1 )。特别是,4-MP在Ni-S键上显示出比三苯膦高的反式影响。同样,CN -发挥相比,
NCS-一个轻微显著反式影响。由于电子密度向
金属的漂移,
硫脲化物CN的距离相对较短。中观察到的
镍-