新颖孤立的金属环组装而成的三维氢键超分子化合物的合成及晶体结构

A novel discrete dinuclear metaUacyclic copper（Ⅱ） complex, [Cu2L2（H2O）2]·3H2O （1） has been firstly prepared where L is derived from the 1 ; 2 condensation of 2,2＇-bipyridyl-3,3＇-diformylhydrazide and acetone during the formation of the complex. Single-crystal X-ray diffraction analysis determines that the complex consists of dinuclear metallacyclic units [Cu2L2（H2O）2] where two metal centers are linked together through two bis（chelating） bridge ligands L to form a bizarre cavity with size 0.9417 nm× 0.4999 nm× 0.6930 nm. Interestingly, the metal coordination also creates hydrogen bond sites that further aggregate these metallacycles into a 3D supramolecular structure with 2D perpendicular hydrophilic tunnels in crystal.     

1,4-双(4-吡啶基甲基苯基醚)(C18H18N2O2)与SCN^-形 成的超分子化合物[H2 (C18H18N2O2)](SCN)2的合成、结构 及其在溶液中的三阶非线性光学性质

超分子化合物[H2(C18H18N2O2)](SCN)由Fe(NO3)3·9H2O,KSCN和1,4-双(4-吡啶基甲基苯基醚)反应得到。通过X射线衍射仪测得该化合物是通过N┈H—N,S┈H—C(C5H5N)及S┈H—C(亚甲基CH2)三种氢键而形成的二维平面网状结构。用Z扫描法对该超分子在DMF溶液中的三阶非线性光学性质进行研究,发现它具有强的三阶非线性折射性能,三阶非线性超极化率X^(3)=6.27×10^-12esu.