Fan Xiao, Daiguebonne Carole, Guillou Olivier, Camara Magatte
INSA, UMR 6226, Institut des Sciences Chimiques de Rennes, 35 708 Rennes, France.
Universit Assane Seck de Ziguinchor, LCPM, BP 523 Ziguinchor, Senegal.
Acta Crystallogr Sect E Struct Rep Online. 2014 Apr 16;70(Pt 5):m181-2. doi: 10.1107/S1600536814007727. eCollection 2014 May 1.
In the title coordination polymer, {[Ce2(C8H4O5)3(H2O)9]·6H2O} n , the asymmetric unit is formed by two Ce(III) atoms, three 5-hy-droxy-benzene-1,3-di-carboxyl-ate ligands, nine coordinating water mol-ecules and six water mol-ecules of crystallization. The two Ce(III) atoms are bridged by 5-hy-droxy-benzene-1,3-di-carboxyl-ate ligands acting in a bis-bidentate coordination mode, generating infinite chains along [101]. Both independent metal atoms are nine-coordinated, one by four O atoms from the carboxyl-ate groups of two bridging 5-hy-droxy-benzene-1,3-di-carboxyl-ate ligands and five O atoms from water mol-ecules, generating a tricapped trigonal-prismatic geometry. The coordination around the second Ce(III) atom is similar, except that one of the water mol-ecules is replaced by an O atom from an additional 5-hy-droxy-benzene-1,3-di-carboxyl-ate ligand acting in a monodentate coordination mode and forming a capped square-anti-prismatic geometry.
在标题配位聚合物{[Ce₂(C₈H₄O₅)₃(H₂O)₉]·6H₂O}ₙ中，不对称单元由两个Ce(III)原子、三个5-羟基苯-1,3-二羧酸酯配体、九个配位水分子和六个结晶水分子组成。两个Ce(III)原子由以双齿配位模式作用的5-羟基苯-1,3-二羧酸酯配体桥连，沿[101]方向生成无限链。两个独立的金属原子均为九配位，一个由来自两个桥连的5-羟基苯-1,3-二羧酸酯配体的羧酸根基团的四个O原子和来自水分子的五个O原子配位，形成一个三帽三棱柱几何构型。第二个Ce(III)原子周围的配位情况类似，只是其中一个水分子被来自以单齿配位模式作用的另一个5-羟基苯-1,3-二羧酸酯配体的一个O原子取代，形成一个帽盖四方反棱柱几何构型。
