oxygen or nitrogen atoms trans to each other. The wavenumber of the rhodium–rhodium stretching mode [ν(RhRh)] has been identified from the resonance Raman spectra and found to be 273.5, 283.5, and 294 cm–1 for the phosphine, arsine, and stibine tetra-acetamidate complexes, respectively; ν(RhRh) is insensitive to trifluoroacetamidate for acetamidate substitution despite the fact that the oxidation potential
合成了[Rh 2(CH 3 CONH)4(MPh 3)2 ]和[Rh 2(CF 3 CONH)4(MPh 3)2 ],M = P,As或Sb的配合物,并通过电子学研究和拉曼光谱,及其电
化学性质进行了研究。[Rh 2(CH 3 CONH)4(AsPh 3)2 ](1)和[Rh 2(CH 3 CONH)4- n(CH )的单晶X射线晶体学研究3 CO 2) Ñ(MPH 3) 2 ],M = As或Sb, Ñ ≈1( 2)和( 3)已分别进行,并且在每种情况下,该结构被发现改进空间群每个晶胞具有一个中心对称分子的P。对于( 2)和( 3),
乙酸酯基团随机取代了乙酰胺酸酯以形成有效的C i对称性。dirhodium四桥笼在D 4 h附近具有典型的,与轴向配位的第15组
配体对称,Rh–Rh键长范围为2.471(2)至2.461(2)Å。Rh-As键长为2.540(2)和2.553(4)Å。对于(1)