Synthesis,characterizations,and crystal structure of a novel 2D metal phosphonate:Na2[Cd2(H2O)3(O_3PCH(OH)CO2)2] centre dot 2H2O

摘要

A novel cadmium phosphonate compound Na2[Cd2(H2O)3(O3PCH(OH)CO2)2] centre dot 2H2O(1)has been synthesized by hydrothermal reaction at 120 °C and characterized by single-crystal X-ray diffraction as well as with infrared spectroscopy,elemental analysis and ther-mogravimetric analysis.The structure of compound 1 comprises CdO6 octahedra and CdO7 pentagonal bipyramid connected by [O3PCH(OH)CO2]~(3-)to form a 2D layered structure with a one-dimensional channel system and the charge-compensating Na+ cations being located between two adjacent layers.