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通过HgX2(X=I,Br)与4,4’-二吡啶基二硫化物(dpds)在乙腈中的溶剂热反应,得到二个含1-(4-吡啶基)-吡啶铵-4-硫醇盐(ppt)的一维配位聚合物:[Hg2I4(ppt)]n(1)和[Hg2Br4(ppt)]n(2).在化合物1和2结构中ppt配体是由dpds在溶剂热反应条件下通过dpds的S—S键和S—C键切断然后进行重排在原位形成的.化合物1具有非中心对称的一维Z字型链状结构,化合物2则具有中心对称的一维Z字型链状结构.用飞秒简并四波混频法测定了1和2溶液的三阶非线性光学性质,化合物1具有较强的非线性光学响应,而化合物2却没有非线性光学响应,这种性质的差异可能由于碘离子是较溴离子更好的电子授体,化合物1有较小的HOMO-LUMO能级,更易发生电子在体系间跃迁,更有效使用三线激发态吸收.
Solvothermal reaction of HgX2 (X = I, Br) with 4,4’-dipyridyl disulfide (dpds) in acetonitrile gave two compounds containing 1- (4-pyridyl) One-dimensional coordination polymers of thiolates (ppt): [Hg2I4 (ppt)] n (1) and [Hg2Br4 (ppt)] n Solvothermal reaction conditions through the dpds S-S bond and S-C bond and then rearranged in situ formation of Compound 1 has a non-centrosymmetric one-dimensional Z-shaped chain structure, the compound 2 has a central symmetry Dimensional one-dimensional zigzag chain structure.The third-order nonlinear optical properties of solutions 1 and 2 were determined by the femtosecond degenerate four-wave mixing method. Compound 1 had a strong nonlinear optical response, whereas compound 2 did not Nonlinear optical response, the difference of this property may be due to the iodine ion is better than the bromide ion electron donor, compound 1 has a smaller HOMO-LUMO level, more prone to electronic transitions in the system, the more effective use of three-line excitation State absorption.