Self-assembly and third-order optical properties of HgI2 with linear and angular bipyridine ligands
作者:Linke Li、Yinglin Song、Hongwei Hou、Zhishan Liu、Yaoting Fan、Yu Zhu
DOI:10.1016/j.ica.2005.03.051
日期:2005.7
Two bis(pyridyl) ligands: N , N ′-bis(4-pyridyl)-1,4-benzenedicarboxamide (bpba) and N , N ′-bis(3-pyridylformyl)imidazolidine-2-thione (bpit) have been designed and synthesized. Self-assembly of the linear ligand bpba and angular ligand bpit with HgI 2 results in a one-dimensional zigzag polymer [HgI 2 (bpba)] · 1.5CH 3 OH} n ( 1 ) and a binuclear metallamacrocycle [HgI 2 (bpit)] 2 · 3H 2 O ( 2 )
设计了两个双(吡啶基)配体:N,N'-双(4-吡啶基)-1,4-苯二甲酰胺(bpba)和N,N'-双(3-吡啶基甲酰基)咪唑烷-2-硫酮(糊状)并合成。线性配体bpba和角配体糊与HgI 2的自组装产生一维之字形聚合物[HgI 2(bpba)]·1.5CH 3 OH} n(1)和双核金属lamcrocrocycle [HgI 2(bpit )] 2·3H 2 O(2)。单晶X射线衍射分析表明,在1的晶体结构中,线性配体bpba处于反式构象,而在2的晶体结构中,角配体的bpit与HgI 2在顺式构象中相配,这两个配体的几何形状不同归因于形成两个HgI 2加合物的不同构架。对DMF溶液中1和2的三阶非线性光学(NLO)性质的确定表明,加合物1和2具有很强的NLO自聚焦作用。计算出的1和2的超极化率γ值分别为2.10×10 -29和3.24×10 -29 esu,与某些NLO材料的可比性相当。