Synthesis and characterization of triaquabis(1,1-cyclobutanedicarboxylato-O,O′,O″,O′″)dimanganese(II)

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• 作者：Rzaczynska ; Zofia ; Bartyzel ; Agata ; Glowiak ; Tadeusz
• 关键词：Manganese complexes ; 1 ; 1-Cyclobutanedicarboxylate complexes ; Crystal structures ; IR spectra ; Thermal analysis ; TG-FTIR analysis
• 刊名：Polyhedron
• 出版年：2003
• 出版时间：August 1, 2003
• 年：2003
• 卷：22
• 期：18
• 页码：2595-2599
• 全文大小：170 K

文摘

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.