= Cl (3), I (4)] bearing a nitrogen-containing ligand L [diethylamine (a), triethylamine (b), imidazole (c), 1-methylimidazole (d), pyrazole (e), 1-methylpyrazole (f), 3,5-dimethylpyrazole (g)] are straightforwardly obtained from L and [Rh(μ-X)(CO)2]2 [X = Cl (1), I (2)] precursors. The synthesis is extended to the diethylsulfide ligand h for 3h and 4h. According to the CO stretching frequency of 3
带有含氮
配体L [
二乙胺(a),
三乙胺(b)的中性
铑(I)方平面络合物[RhX(CO)2(L)] [X = Cl(3),I(4)] ,
咪唑(c),1-甲基
咪唑(d),
吡唑(e),
1-甲基吡唑(f),
3,5-二甲基吡唑(g)]可直接从L和[Rh(μ-X)(CO)2 ] 2 [X = Cl(1),I(2)]个前体。合成过程扩展到
二乙基硫配体h进行3h和4h。据的CO伸缩频率3和4,对
铑中心电子密度的排序如下顺序b >一个≈ d > c ^ >克> ˚F ≈ ħ > ë。确定了3a,3d - 3f,4a和4d - 4f的X射线分子结构。温度为1 H和13 C 1时的结果1 H NMR实验表明,4c - 4h的通量缔合
配体交换以及4e和4g中的补充氢交换过程。CH 3 I与配合物4c - 4g的氧化加成反应得到中性二聚
碘桥式乙酰
铑(III)配合物[RhI(μ-I)(COCH 3)(CO)(L)]