Reaction of mixed valence ruthenium tetracarboxylates [Ru2II,III(R1COO)2(R2COO)2Cl] (R1 = Me, R2 = 2,4,6-iPr-Ph or R1 = R2 = tBu) with two equivalents of the octahedral manganese complex [MnI(CO)(CN)(tBuNC)4] leads to the formation of cyanide bridged heteronuclear coordination compounds of the general formula [Ru2II,III(R1COO)2(R2COO)2][MnI(CO)(CN)(tBuNC)4]2}Cl. In solution an intramolecular electron transfer from manganese towards the multiply bonded Ru2 core occurs that is verified by EPR and IR spectroscopy, magnetic measurements and DFT calculations. Nevertheless, disproportionation of an initially formed MnI–Ru2II,III–MnI}+ adduct into MnII–Ru2II,III–MnI}2+ and MnI–Ru2II,II–MnI} species cannot be completely ruled out.
混合价四
羧酸钌[Ru2II,III(R1COO)2(R2COO)2Cl](R1 = Me,R2 = 2,4、6-iPr-Ph或 R1 = R2 = tBu)与两个当量的八面体
锰配合物[MnI(CO)(CN)(tBuNC)4]形成
氰桥异核配位化合物,通式为[Ru2II,III(R1COO)2(R2COO)2][MnI(CO)(CN)(tBuNC)4]2}Cl。在溶液中,分子内电子从
锰向多键 Ru2 核心转移,这一点已通过 EPR 和 IR 光谱、磁性测量和 DFT 计算得到验证。尽管如此,也不能完全排除最初形成的MnI-Ru2II,III-MnI}+ 加合物歧化为MnII-Ru2II,III-MnI}2+ 和 MnI-Ru2II,II-MnI} 物种的可能性。