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Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
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¸ø¸ÄÁË¸Ä Synthesis, Structure and Properties of hydroxy benzene acetic acid and methyl-phenoxyacetic acid transition metal coordination polymers Abstract Specific topological structure based on coordination polymers in the selective catalysis, molecular recognition, and many optical, electrical, magnetic materials and superconductors, materials, etc. shows an attractive application prospect. Hydroxy benzene acetic acid and acetic acid have biological activity, such as anti-bacterial and other aspects, leading to a wide range of applications. We have studied hydroxy benzene acetic acid and acetic acid coordination unit for the nodes of copper, cobalt, cadmium, manganese, zinc coordination polymers of structural chemistry. (1) The use of benzene-glycolic acid as a ligand in water and ethanol mixed solvent, by adding Cu (II) salts, to acquire a three-dimensional coordination polymer [Cu (C8H7O3) 2] n (1) crystals. The effects of IR, TGA and X-ray diffraction on the crystal structure and properties were characterized and studied. Infrared spectroscopy and X-ray diffraction shows that coordination polymer (1) there is no water involved in coordination, the central ion is six-coordinated octahedral geometries, ligand 3 O atoms are involved in coordination. Carboxylic acid ligands use trans-bidentate ligand, since coordination bond and rich hydrogen bonding them to assemble into two-dimensional structure, but because of non-polar group interactions and the role of CH ... ¦Ð, assembled into a three-dimensional supramolecular structure. (2) The use of chemically-methyl phenol and chloroacetic acid to synthesize methyl-phenoxyacetic acid. With-methyl-phenoxyacetic acid as a ligand, in aqueous solution, respectively, with Cu (II), Co (II), Cd (II), Mn (II) and Zn (II) salt and the role of coordination polymer assembled into [Cu (C9H9O3) 2 (H2O) 2] (2), polymer [Co (C9H9O3) 2 (H2O) 4] (3), polymer [Cd (C9H9O3) 2 (H2O) 2] (4), aggregate complex [Mn (C9H9O3) 2 (H2O) 2] (5), polymer (6). And by IR, TGA, fluorescence spectroscopy and X-ray diffraction on the crystal structure and properties were characterized and studied. The study found that the central ion of these complexes have adopted the six-coordinated, forming octahedral geometry. Complex (2) and (3) carboxylic acids using monodentate ligand complexes (4), carboxylic acids using chelating bidentate ligand complexes (5), carboxylic acids using cis - trans - Bridged bidentate coordination of the way, in short, carboxylic acid ligands using different forms of coordination, with three body not all the O atoms participate in coordination. Complex (5) Since the coordination bond and extensive hydrogen bonding assembly into two-dimensional structure of complex (2), (3), (4) As the wealth of hydrogen bonding and non-polar group interactions assembly into a two-dimensional structure, but also because of non-polar group interactions and the role of CH ... ¦Ð, assembled into a three-dimensional supramolecular structure. (3) through the complex (1), (2), (3), (4) and (6) thermal gravimetric analysis and found that the complex (1) has better thermal stability at 200 ¡æ temperature can exist stably, while the complex (2), (3), (4), slightly worse thermal stability of some of its main skeleton basically stable at 200 ¡æ. Through the ligand and complexes (4), (6) comparative study found that complexes (4), (6) of the fluorescence better performance. P-hydroxy-acid ligands and ligand-methyl-phenoxyacetic acid and the nature of the transition metal ions similar to the six coordination polymers assembled in the analysis, revealing their structural connections, in order to deal with this type of functionality objects laid the foundation for further investigation. Keywords: coordination polymer crystal structure of molecular assembly of benzene-glycolic acid Thermal properties of methyl-phenoxyacetic acid fluorescence properties |
4Â¥2009-11-21 01:02:03
toflyfirst
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haozi029228(½ð±Ò+1,VIP+0): 11-18 22:44
haozi029228(½ð±Ò+50,VIP+0):xiexie 11-18 22:45
zap65535(½ð±Ò-1,VIP+0):ϲ»ÎªÀý£¬·ñÔòÒ»Æð¿Û¡£ 12-22 01:01
haozi029228(½ð±Ò+1,VIP+0): 11-18 22:44
haozi029228(½ð±Ò+50,VIP+0):xiexie 11-18 22:45
zap65535(½ð±Ò-1,VIP+0):ϲ»ÎªÀý£¬·ñÔòÒ»Æð¿Û¡£ 12-22 01:01
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Hydroxy benzene acetic acid and methyl-phenoxyacetic acid transition metal coordination polymers Synthesis, Structure and Properties of Abstract Special topological structure makes coordination polymers in the selective catalysis, molecular recognition, and many optical, electrical, magnetic materials and superconductors, materials, etc. show an attractive application prospect. Hydroxy benzene acetic acid and acetic acid have biological activity, such as anti-bacterial and other aspects, a wide range of applications. Therefore, we started hydroxy benzene acetic acid and acetic acid coordination unit for the nodes of copper, cobalt, cadmium, manganese, zinc coordination polymers of structural chemistry studies. (1) the use of benzene-glycolic acid as a ligand in water and ethanol mixed solvent, by adding Cu (II) salts, to acquire a three-dimensional coordination polymer [Cu (C8H7O3) 2] n (1) crystals. And by IR, TGA and X-ray diffraction on the crystal structure and properties were characterized and studied. Infrared spectroscopy and X-ray diffraction showed that coordination polymer (1) there is no water involved in coordination, the central ion is six-coordinated octahedral geometries, ligand 3 O atoms are involved in coordination. Carboxylic acid ligands using trans-bidentate ligand, since coordination bond and rich hydrogen bonding them to assemble into two-dimensional structure, but also because of non-polar group interactions and the role of CH ... ¦Ð, assembled into a three-dimensional supramolecular structure. (2) the use of chemically-methyl phenol and chloroacetic acid to synthesize methyl-phenoxyacetic acid. With-methyl-phenoxyacetic acid as a ligand, in aqueous solution, respectively, with Cu (II), Co (II), Cd (II), Mn (II) and Zn (II) salt and the role of coordination polymer assembled into [Cu (C9H9O3) 2 (H2O) 2] (2), polymer [Co (C9H9O3) 2 (H2O) 4] (3), polymer [Cd (C9H9O3) 2 (H2O) 2] (4), aggregate complex [Mn (C9H9O3) 2 (H2O) 2] (5), polymer (6). And by IR, TGA, fluorescence spectroscopy and X-ray diffraction on the crystal structure and properties were characterized and studied. The study found that the central ion of these complexes have adopted the six-coordinated, forming octahedral geometry. Complex (2) and (3) carboxylic acids using monodentate ligand complexes (4), carboxylic acids using chelating bidentate ligand complexes (5), carboxylic acids using cis - trans - Bridged bidentate coordination of the way, in short, carboxylic acid ligands using different forms of coordination, with three body not all the O atoms participate in coordination. Complex (5) Since the coordination bond and extensive hydrogen bonding assembly into two-dimensional structure of complex (2), (3), (4) As the wealth of hydrogen bonding and non-polar group interactions assembly into a two-dimensional structure, but also because of non-polar group interactions and the role of CH ... ¦Ð, assembled into a three-dimensional supramolecular structure. (3) through the complex (1), (2), (3), (4) and (6) thermal gravimetric analysis and found that the complex (1) has better thermal stability at 200 ¡æ temperature can exist stably, while the complex (2), (3), (4), slightly worse thermal stability of some of its main skeleton basically stable at 200 ¡æ. Through the ligand and complexes (4), (6) comparative study found that complexes (4), (6) of the fluorescence better performance. P-hydroxy-acid ligands and ligand-methyl-phenoxyacetic acid and the nature of the transition metal ions similar to the six coordination polymers assembled in the analysis, revealing their structural ties, in order to cope with this type of functionality objects laid the foundation for further exploration. Keywords: coordination polymer crystal structure of molecular assembly of benzene-glycolic acid Thermal properties of methyl-phenoxyacetic acid fluorescence properties |
2Â¥2009-11-15 11:41:10














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