title: Synthesis, infrared spectra, thermal analyses and structural studies of half-sandwich Fe(III)/Fe(II) complex containing pyridine-2,6-dicarboxylate and 1,10-phenanthroline.
abstract: A new pyridine-2,6-dicarboxylate iron(III)/iron(II) complex [Fe(phen)(3)][Fe(2)(PDC)(4)].3CH(3)OH was synthesized and characterized (where PDC=pyridine-2,6-dicarboxylate, phen=1,10-phenanthroline) by using elemental analysis, IR spectroscopy and thermal analyses (TGA and DTA). The molecular structure of the complex has been determined by single-crystal X-ray diffraction. The complex is mixed-ligands and the IR spectra display bands characteristic of coordinated mixed-ligand bases. All the IR results are in agreement with the X-ray crystal result. The bond lengths indicate that this complex has [Fe(phen)(3)](2+) cation where Fe(II) ion is in typical low-spin state, and in counter ions, [Fe(PDC)(2)](-) are both in high-spin state.
authors.affiliation: College of Life Science & Chemistry, Xinjiang Normal University, Urumqi, Xinjiang Proince 830054, China. huxin81387429@yahoo.com.cn
authors.forename: Xin
authors.initials: X
authors.lastname: Hu
authors.forename: Jixi
authors.initials: J
authors.lastname: Guo
authors.forename: Yongjiang
authors.initials: Y
authors.lastname: Wang
authors.forename: Cong
authors.initials: C
authors.lastname: Liu
mesh_terms: D004055:Differential Thermal Analysis; D007501:Iron / Q000737:chemistry* / Q000378:metabolism; D058085:Iron Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D046911:Macromolecular Substances / Q000138:chemical synthesis / Q000737:chemistry; D008958:Models, Molecular; D010618:Phenanthrolines / Q000737:chemistry*; D010848:Picolinic Acids / Q000737:chemistry*; D011487:Protein Conformation; D013055:Spectrophotometry, Infrared / Q000379:methods; D013816:Thermodynamics
chemical_list: D058085:Iron Compounds; D046911:Macromolecular Substances; D010618:Phenanthrolines; D010848:Picolinic Acids; D007501:Iron; C004860:dipicolinic acid; C025205:1,10-phenanthroline