Supramolecular isomerism within three-dimensional 3-connected nets: unusual synthesis and characterization of trimorphic copper(I) 3,5-dimethyl-1,2,4-triazolate.
Supramolecular isomerism within three-dimensional 3-connected nets: unusual synthesis and characterization of trimorphic copper(I) 3,5-dimethyl-1,2,4-triazolate.
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DOI：
10.1039/b509615d
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发表时间：
2005-10
影响因子：
4
通讯作者：
Jie‐Peng Zhang;Yan-Yong Lin;Xiao-Chun Huang;Xiao‐Ming Chen
中科院分区：
文献类型：
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作者：
Jie‐Peng Zhang;Yan-Yong Lin;Xiao-Chun Huang;Xiao‐Ming Chen
乙腈、氨水和铜（II）盐的溶剂热处理在不同的反应条件下经常产生α-[Cu（mtz）]（1）（Hmtz = 3，5-二甲基-1，2，4-三唑）。然而，在引入4，4 '-联吡啶或硝酸盐作为添加剂时，成功地分离了1的两个新的超分子异构体，即β-[Cu（mtz）]（2）和γ-[Cu（mtz）]（3）。1-3代表了三维3连通网络中真正的超分子异构现象的第一个例子。在新的四面体相2中，除了观察到四面体相1的4.8.10网络（P4（2）/n，a= 13.470（2），c= 6.142（2）A）外，还观察到两个新的3连通网络8（2）10-a和6.10（2（I42 d，a= 14.0247（5），c= 5.2884（4）A）和正交相3（Iba 2，a= 8.0423（7），B= 11.5310（10），c= 17.3505（16）A）。这三种异构体还显示出与其不同的超分子结构相关的不同物理性质。
Solvothermal treatments of acetonitrile, aqueous ammonia and copper(II) salts frequently yielded alpha-[Cu(mtz)](1)(Hmtz = 3,5-dimethyl-1,2,4-triazole) under different reaction conditions. However, two new supramolecular isomers of 1, namely beta-[Cu(mtz)](2) and gamma-[Cu(mtz)](3) were successfully isolated upon introducing 4,4'-bipyridine or nitrate as an additive. 1-3 represent the first example of true supramolecular isomerism within 3D 3-connected nets. Besides the 4.8.10 net for the tetragonal phase 1 (P4(2)/n, a= 13.470(2), c= 6.142(2)A), two novel 3-connected nets, 8(2)10-a and 6.10(2), were observed in the new tetragonal phase 2 (I42d, a= 14.0247(5), c= 5.2884(4)A) and orthorhombic phase 3 (Iba2, a= 8.0423(7), b= 11.5310(10), c= 17.3505(16)A), respectively. The three isomers also displayed distinct physical properties related to their different supramolecular structures.