학술논문
Synthesis and characterization of triaquabis(1,1-cyclobutanedicarboxylato-O,O′,O″,O′″)dimanganese(II)
Document Type
Article
Source
Subject
*MANGANESE
*X-rays
*CRYSTALLOGRAPHY
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*
Language
ISSN
0277-5387
Abstract
The manganese(II) complex, [Mn2(C6H6O4)2(H2O)3] was synthesized and characterized by X-ray crystallography, IR spectra and thermal analysis. The manganese salt crystallizes in the monoclinic system, space group C2/c. Mn ions are coordinated to six oxygen atoms. The coordination polyhedron around the Mn ion can be described as a distorted octahedron. The manganese(II) complex has a chain structure. The repeating dimeric unit consists of Mn(II) atoms bridged by oxygens from two carboxylate ligands and one water molecule. The carboxylate ligands occur as tridentate-bridging and monodentate. The compound dehydrates at 403 K and then decomposes at 500 K first to Mn2O3 which transforms into Mn3O4 at 1183 K. The thermal decomposition is connected with release of water (405 K), carbon dioxide (470 K) and hydrocarbons (595 K). The IR spectra of the salt are discussed. [Copyright &y& Elsevier]