摘要
钙离子在细胞的新陈代谢过程中有多种重要的结构和催化作用,它们既可作为酶激活剂,又可在脂蛋白中桥联邻近的羧酸根而使细胞膜强化,还可作为细胞外酶的辅因子。在复杂的生命过程中,钙离子还对神经传导、肌肉收缩、激素释放、血液凝结等起调节控制作用.因此钙离子被称为“生命元素”。羧酸配位聚合物是金属节点与羧酸分子通过配位键经自组装而成的高度有序结构的聚合物。
The coordination polymer [Ca(L)2·(CH3OH)2]n (HL=N-phenylanthranilic acid) (1) was synthesized by the reaction of calcium perchlorate with N-phenylanthranilic acid in the CH3OH/H2O. It was characterized by elemental analysis, IR, thermal analysis and X-ray single crystal structure analysis. The crystal of the title complex [Ca(L)2·(CH3OH)2]n belongs to triclinic, space group P1 with a=0.751 5(3) nm, b=1.079 6(4) nm, c=1.629 5(6) nm, α=83.547(5)°,β=89.001(6)°, γ=72.257(5)°, V=1.251 0(8) nm^3, Z=2, Do=1.403 Mg .m^-3, F(000)=556, and final R1=0.066 8, wR2=0.140 4. The complex comprises a seven-coordinated calcium(Ⅱ) center, with a 07 distorted pengonal bipyramidal coordination environment. Adjacent Ca(Ⅱ) ions are bridged by N-phenylanthranilicate groups, resulting in a 1D chain structure. The adjacent Ca…Ca distances are 0.382 8 nm and 0.384 6 nm. Furthermore, the molecules are connected by hydrogen bonds to form two dimensional layered structure.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2008年第5期831-834,共4页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目(No.20671073)
山东省自然科学基金资助项目(No.Y2007B60)
潍坊市科技发展计划项目资助项目