Synthesis and characterisation of some ruthenium(II) complexes of α-N heterocyclic carboxylic acids—X-ray structures of cis-[Ru(PPh3)2(L1)2]·2CH3OH and cis-[Ru(PPh3)2(L3H)2] (L1H=pyridine 2-carboxylic acid and L3H2=imidazole 4,5-dicarboxylic acid)
作者:Parbati Sengupta、Rupam Dinda、Saktiprosad Ghosh、W.S Sheldrick
DOI:10.1016/s0277-5387(01)00946-9
日期:2001.12
Abstract Synthesis and characterisation of ruthenium(II) complexes of several α-N heterocyclic carboxylic acids of the general formula [Ru(PPh3)2(L)2] are reported [LH=pyridine 2-carboxylic acid (L1H), pyrazine 2-carboxylic acid (L2H), imidazole 4,5-dicarboxylic acid (L3H2) and pyrazine 2,3-dicarboxylic acid (L4H2)]. All the acids behaved as bidentate N–O chelating donors, the second carboxyl group
摘要报道了几种通式为[Ru(PPh3)2(L)2]的α-N杂环羧酸的钌(II)配合物的合成和表征[LH =吡啶2-羧酸(L1H),吡嗪2-羧酸(L 2 H),咪唑4,5-二羧酸(L 3 H 2)和吡嗪2,3-二羧酸(L 4 H 2)]。所有酸均表现为双齿N–O螯合供体,二元羧酸的第二个羧基保持游离状态。通过循环伏安法研究了配合物的电化学行为。两种配合物cis- [Ru(PPh3)2(L1)2]·2CH3OH和cis- [Ru(PPh3)2(L3H)2]的单晶X射线分析导致结构的阐明,结果表明:在这两种复合物中,两个庞大的PPh3基团是彼此顺式的。