英语翻译(一）A novel tubular coordination network [Zn(spcp)(OH)](s

英语翻译
(一）
A novel tubular coordination network [Zn(spcp)(OH)](spcp=4-sulfanylmethyl-4'-phenylcarboxylate pyridine) with a modest SHG activity based on two types of homo-chiral helices was synthesized and characterized.
Crystal engineering based on noncentrosymmetric metal–organic frameworks (MOFs) by using asymmetric bridging ligands as building blocks has attracted much attention owing to its potential applications as second-order nonlinear optical (NLO) materials.The utilization of asymmetric bridging ligands can introduce electronic asymmetry (push–pull effect),which is essential for a second harmonic generation (SHG) response.At present,there are numerous examples with three dimensional interpenetrated diamondoid or two-dimensional grid structural motifs assembled by combining unsymmetrical,rigid,and linear pyridinecarboxylate ligands and d10 metal ions (in particular Zn2+ and Cd2+) for their favorable optical transparency.However,the helical and other recurring coordination
networks used in NLO materials still remain few explored.Widely found in nature,helical structural motifs exhibit axial chirality,and can crystallize in noncentrosymmetric space groups.We believe that the introduction of chemical interaction sites in asymmetric bridging ligands is a challenging subject in developing new polar and chiral systems,and aesthetic structural motif with fascinating functions can be obtained.

A novel tubular coordination network [Zn(spcp)(OH)](spcp=4-sulfanylmethyl-4'-phenylcarboxylate pyridine) with a modest SHG activity based on two types of homo-chiral helices was synthesized and characterized.一种新型的管状协调网络[锌（双机）（噢）]（双机=4-sulfanylmethyl-4' -phenylcarboxylate吡啶）与适度倍频活动结合的新型homo-chiral螺旋的合成及特点.Crystal engineering based on noncentrosymmetric metal–organic frameworks (MOFs) by using asymmetric bridging ligands as building blocks has attracted much attention owing to its potential applications as second-order nonlinear optical (NLO) materials.The utilization of asymmetric bridging ligands can introduce electronic asymmetry (push–pull effect),which is essential for a second harmonic generation (SHG) response.At present,there are numerous examples with three dimensional interpenetrated diamondoid or two-dimensional grid structural motifs assembled by combining unsymmetrical,rigid,and linear pyridinecarboxylate ligands and d10 metal ions (in particular Zn2+ and Cd2+) for their favorable optical transparency.However,the helical and other recurring coordination晶体工程的基础上非中心对称的金属有机框架–（MOF）采用不对称桥联配体作为基石,吸引了很多关注,由于其潜在的应用作为二阶非线性光学（非线性光学）材料.利用不对称桥联配体可以引入电子不对称（推–拉动效应）,这是必不可少的二倍频（倍频）反应.目前,有许多例子三三维贯通的或二维网格结构图案由结合不对称,刚性,和线性pyridinecarboxylate配体和金属离子（特别是DZn 2 +、Cd 2 +）其良好的光学透明性.然而,螺旋和其他经常性的协调networks used in NLO materials still remain few explored.Widely found in nature,helical structural motifs exhibit axial chirality,and can crystallize in noncentrosymmetric space groups.We believe that the introduction of chemical interaction sites in asymmetric bridging ligands is a challenging subject in developing new polar and chiral systems,and aesthetic structural motif with fascinating functions can be obtained.网络在非线性光学材料仍然很少探讨.广泛存在于自然界,螺旋结构图案具有轴向手性,并可以在非中心对称空间群结晶.我们认为,采用化学相互作用位点在不对称桥联配体是一个具有挑战性的学科发展新的极性和手性系统,和审美的主题结构与迷人的功能可以得到.