PMo12 O403-模板导向合成含螺旋链的新颖二维层状Dy（Ⅲ）化合物

摘要

在水热条件下,以[PMo12O40]3-为模板,合成了一个例新型二维层状化合物[Dy(BMBCP)(H2O)4]·[PMo12O40]·2.75H2O[HNU-7, H2BMBCP·Cl2=1,4-双(4-羧酸吡啶基-1-亚甲基)苯二氯],并通过X射线单晶结构解析、红外光谱( IR)、电感耦合等离子体光谱( ICP)、X射线粉末衍射( XRD)和荧光光谱对该化合物结构进行表征.由于客体分子[ PMo12 O40]3-与配体BMBCP中的N+之间存在静电吸引力,导致了-Dy2簇-BMBCP-Dy2簇-交替排列的螺旋链的形成.左手螺旋链和右手螺旋链通过共同的Dy2簇进一步构筑成层状的4,4-网格结构.%A new two-dimensional(2D) Dy(Ⅲ) complex, [Dy(BMBCP)(H2O)4][PMo12O40]·2. 75H2O{H2BMBCP=1,1'-[1,4-phenylene-bis(methylene)]-bis(pyridine-4-carboxylicaicd)}, denoted as HNU-7, was hydrothermally synthesized using [ PMo12 O40 ] 3- as template, and characterized by single crystal X-ray diffraction, Infrared spectroscopy ( IR ) , X-ray diffraction ( XRD ) , inductively coupled plasa ( ICP ) and luminescent techniques. Interestingly, due to the electrostatic attraction between the guest ions [ PMo12 O40 ] 3-and N+of BMBCP ligands in the host sheets, pairs of helical-Dy2 cluster-BMBCP-Dy2 cluster-BMBCP-chains were formed by the alternation of Dy2 clusters and the BMBCP ligands. The left- and right-handed helical chains are linked together via Dy2 clusters to from the infinite sheet structure with 4,4-net.