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首页> 外文期刊>Crystal growth & design >Two porous zinc coordination polymers with (10,3) topological features based on a N-centered tripodal ligand and the conversion of a (10,3)-d Subnet to a (10,3)-a Subnet
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Two porous zinc coordination polymers with (10,3) topological features based on a N-centered tripodal ligand and the conversion of a (10,3)-d Subnet to a (10,3)-a Subnet

机译:两种具有(10,3)拓扑特征的多孔锌配位聚合物,基于N中心三脚架配体,并将(10,3)-d子网转换为(10,3)-a子网

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摘要

Two porous (3,4)-connected zinc coordination polymers, {[Zn(TIPA)(mal) _(1/2)](NO_3)?_3H_2O}_n (1) and {[Zn(TIPA)(glu)_(1/2)](NO_3)?H_2O}_n (2) (mal = malonic acid, glu = glutaric acid, TIPA = tris(4-(1H-imidazol-1-yl) phenyl)amine) have been hydrothermally synthesized and characterized. Complex 1 crystallizes in the orthorhombic space group Pnna (No. 52) containing an unusual 3D subnet with (10,3)-d topology and left- and right-handed helical channels. Complex 2 crystallizes in the orthorhombic chiral space group P222_1 (No. 17) containing an unusual 3D chiral subnet with (10,3)-a topology and 4-fold right-handed helical channels. The conversion of achiral complex 1 with a (10,3)-d (utp) achiral subnet to chiral complex 2 with a (10,3)-a (srs) chiral subnet has been successfully induced by increasing the length of ditopic aliphatic dicarboxylic acid. Second harmonic generation (SHG) measurement was performed on complex 2 revealing that 2 has a strong SHG response, and the SHG efficiency is approximately 0.8 times that of urea (ca. 8 times that of KDP). In addition, photoluminescence and thermogravimetric analysis were also performed on 1 and 2.
机译:两种多孔(3,4)连接的锌配位聚合物,{[Zn(TIPA)(mal)_(1/2)](NO_3)?_ 3H_2O} _n(1)和{[Zn(TIPA)(glu)_ (1/2)](NO_3)→H_2O} _n(2)(mal =丙二酸,glu =戊二酸,TIPA =三(4-(1H-咪唑-1-基)苯基)胺)已经水热合成。和特点。配合物1在正交空间群Pnna(第52号)中结晶,该群包含具有(10,3)-d拓扑结构以及左手和右手螺旋形通道的不寻常3D子网。配合物2在正交晶体手性空间群P222_1(第17号)中结晶,该群包含具有(10,3)-a拓扑结构和4倍右旋螺旋通道的不寻常3D手性子网。通过增加对位脂肪族二羧酸的长度,成功地诱导了具有(10,3)-d(utp)非手性子网的非手性复合物1向具有(10,3)-a(srs)手性子网的手性复合物2的转化。酸。对复合物2进行了二次谐波生成(SHG)测量,发现2具有较强的SHG响应,SHG效率约为尿素的0.8倍(约为KDP的8倍)。此外,还对1和2进行了光致发光和热重分析。

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