Hydrothermal synthesis and crystal structures of Mn(II) and Cd(II) aminophosphonates with a layered structure
Titel:
Hydrothermal synthesis and crystal structures of Mn(II) and Cd(II) aminophosphonates with a layered structure
Auteur:
Meng, Lei Li, Jing Sun, Zhengang Zheng, Xuefang Chen, Hui Dong, Dapeng Zhu, Yanyu Zhao, Yan Zhang, Jing
Verschenen in:
Journal of coordination chemistry
Paginering:
Jaargang 61 (2008) nr. 15 pagina's 2478-2487
Jaar:
2008
Inhoud:
Two new divalent metal aminodiphosphonates with a layered structure, Mn2[(HL)(H2O)F]·H2O (1) and Cd3.5[(HL)L] (2) (H4L = CH3CH2CH2N(CH2PO3H2)2), have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction as well as with infrared spectroscopy, elemental analysis and thermogravimetric analysis. In 1, two MnO4F2 and two MnO5F polyhedra are interconnected via edge-sharing into a tetramer, and such tetramers are bridged by the diphosphonate ligands into a Mn(II) phosphonate layer in the ab-plane. The structure of 2 also features a 2D layered structure, in which the CdO5N and CdO6 polyhedra are interconnected into a 1D chain. The chains are then cross-linked via phosphonate oxygen atoms to form Cd(II) phosphonate layers in the ab-plane.