Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1236780 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2006 | 5 Pages |
Abstract
A novel compound, (Himi)(H3O) [Cu(imi)2]2[P2Mo5O23]·H2O 1 (imi = imidazole), was synthesized by hydrothermal method and characterized by X-ray single analysis, ESR spectrum, one-dimensional (1D) infrared spectroscopy and two-dimensional (2D) correlation infrared spectroscopy under thermal and magnetism perturbation. Crystal data for the compound 1: orthorhombic system, space group Pnma, a = 14.580(3) Ã
, b = 21.073(4) Ã
, c = 16.664(3) Ã
, ZÂ =Â 4. It consists of the Mo-Cu building-blocks [Cu(imi)4]2[P2Mo5O23]2â, protonated imidazole cations and water molecules. In the Mo-Cu building-blocks, [Mo5P2O23]6â clusters are linked by {Cu(imi)4}2+ group to form a two-dimension parallelogram griddling structure. From the 2D IR correlation spectroscopy analyses, it is discovered that the intensity changes of MoO and P-O band are sensitive to the temperature variation, whereas the Mo-O bond linking to Cu2+ can be remarkably affected by the magnetism variation. Furthermore, the intensity changes of P-O bands occur prior to that of the MoO band during the temperature elevation.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Yiping Chen, Hanhui Zhang, Changcang Huang, Yanning Cao, Ruiqing Sun, Wenjun Guo,