Thirumurugan A, Sanguramath R A, Rao C N R
Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P. O., Bangalore 560064, India.
Inorg Chem. 2008 Feb 4;47(3):823-31. doi: 10.1021/ic701323q. Epub 2008 Jan 3.
By the employment of hydrothermal methods, four lead 1,3-cyclohexanedicarboxylates with the compositions Pb(1,3-CHDC)(H(2)O), I, [(OPb(4))(2)(OH)(2)(C(2)O(4))(1,3-CHDC)(4)].H(2)O, II, Pb(2)(1,3-CHDC)(2)(H(2)O), III, and (OPb(3))(1,3-CHDC)(2), IV, have been prepared and characterized. Of these, I and II have layered structures while III and IV have three-dimensional structures. I-III are hybrid structures possessing extended inorganic connectivity in one or two-dimensions (I(n), n = 1 or 2) involving infinite Pb-O-Pb linkages along with zero or one-dimensional organic connectivity (O(m), m = 0 or 1). I contains two types of layers with different connectivities (I(1)O(1) and I(2)O(0). III is a truly 3-D hybrid compound with I(2)O(1) type connectivity. IV has three-dimensional organic connectivity (O(3)) but no inorganic connectivity (I(0)). The conformation of the CHDC anion is e,e in I-III and a,e in IV. In all these compounds, the lead atom has hemi- or holodirected coordination geometry.
通过水热法，制备并表征了四种组成分别为Pb(1,3-CHDC)(H₂O)（I）、[(OPb₄)₂(OH)₂(C₂O₄)(1,3-CHDC)₄]·H₂O（II）、Pb₂(1,3-CHDC)₂(H₂O)（III）和(OPb₃)(1,3-CHDC)₂（IV）的1,3-环己烷二羧酸铅。其中，I和II具有层状结构，而III和IV具有三维结构。I - III是杂化结构，在一维或二维（I(n)，n = 1或2）中具有扩展的无机连接性，涉及无限的Pb - O - Pb键，同时具有零维或一维的有机连接性（O(m)，m = 0或1）。I包含两种具有不同连接性的层（I₁O₁和I₂O₀）。III是具有I₂O₁型连接性的真正三维杂化化合物。IV具有三维有机连接性（O₃）但没有无机连接性（I₀）。在I - III中CHDC阴离子的构象为e,e，在IV中为a,e。在所有这些化合物中，铅原子具有半定向或全定向的配位几何结构。
