Nickel(II) and palladium(II) complexes of some ortho-quinone monoximes. A study of the monomer-dimer equilibrium involving the nickel complexes
作者:I.M. El-Nahhal、G.S. Heaton、A.M. Jelan
DOI:10.1016/s0020-1693(00)84964-6
日期:1992.7
red dimers and diamagnetic green monomers. The substituents in these Ni(II) complexes are 4-Me, 4-Cl, 4-But, 4,6-diMe and 4,6-diBut. Some of the equilibrium constants, enthalpies and entropies of dissociation are calculated. The techniques used include electronic spectra, 1H NMR and magnetic susceptibility determinations. Some of the parent nitrosophenols are characterised by their UV, IR and 1H NMR
摘要描述了邻位苯醌单肟的两个系列钯(II)配合物[Pd(qo)2]和[Pd(qo)Cl] 2,其中qo代表邻苯二醌-2-肟的阴离子。配体带有以下取代基:4-Me-6-But,4-But-6-Me,4,6-diBut和4-CMe2Ph。二聚体复合物是μ-二氯化合物的新实例。[Ni(qo)2]化合物在非配位溶剂中显示的温度和浓度依赖性平衡是首次显示仅涉及顺磁性红色二聚体和抗磁性绿色单体。这些Ni(II)配合物中的取代基是4-Me,4-Cl,4-But,4,6-diMe和4,6-diBut。计算了一些解离的平衡常数,焓和熵。所使用的技术包括电子光谱,1 H NMR和磁化率测定。