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作 者:段显英[1] 李非非[1] 魏梅林[2] 韩福娇[1] 王文新[1] 李继[1]
机构地区:[1]河南省科学院化学研究所,郑州450002 [2]河南师范大学化学化工学院,新乡453007
出 处:《人工晶体学报》2014年第3期712-716,722,共6页Journal of Synthetic Crystals
基 金:National Natural Science Foundation of China(21171050)
摘 要:在水热条件下,合成了一个二维配位聚合物{[Zn2(L)(m-bix)]2·0.5(H2O)}n[H4L=5,5'-亚甲基二间苯二甲酸,m-bix=1,3-双(咪唑基-1-甲基)-苯],并通过红外和X-射线单晶衍射进行了表征。X-射线衍射结果表明,该配位聚合物晶体属于三斜晶系,P-1空间群,a=1.10294(17)nm,b=1.10806(15)nm,c=1.2605(2)nm,α=73.259(2)°,β=74.304(3)°,γ=67.576(2)°,V=1.3410(4)nm3,Z=1。配位聚合物中,Zn(II)原子采取四面体构型,三个氧原子分别来与三个L4-配体,一个氮原子来于配位的m-bix分子。每个L4-配体桥联六个Zn(II)中心,形成一个波浪状的二维面[Zn2(L)]∞,然后m-bix分子在[Zn2(L)]∞的上下方连结双核Zn(II)单元,形成二维层状化合物[Zn2(L)(m-bix)]∞。室温下研究了配位聚合物的固体荧光光谱特性。A new Zn(II) coordination polymer t[Zn2 (L) (m-bix)12 : 0. 5 (H20)} [H4L = methylenediisophthalic acid, m-bix = 1,3-bis ( imidazol-l-ylmethyl ) -benzene ) ] has been synthesized under hydrothermal conditions and characterized by IR spectroscopy, elemental analysis and X-ray single- crystal structural analysis. The result of X-ray single-crystal structural analysis shows that it crystallizes in triclinic crystal system, P-1 space group, a = 1. 10294 (17) nm, b = 1. 10806 (15) nm, c = 1. 2605 (2) nm, a=73.259(2)~, /3 =74. 304(3)~, T=67.576(2)~, V=1.3410(4) nm3, Z=I. In this polymer, Zn(II) atom has the tetrahedral coordination environment with three oxygen atoms from three L4- ligands and one nitrogen atom from coordinated m-bix ligands. Each L4- ligand is bound to six zinc centers, giving rise to 2D [ Zn2 (L) ], layer. Auxiliary m-bix ligands connected zinc atoms of binuclear upside down the 213 [Znz(L) ]~ layer to form 2D [Zn2(L) (m-bix) ] layer. Moreover, in solid state, the photoluminescent properties were studied at room temperature. CCDC :971249.
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