title: Synthesis, characterization and properties of chromium(III) complex [Cr(SA)(en)2]Cl.2H2O.
abstract: The reaction of chromium(III) chloride, salicylic acid (SA) and ethylenediamine (en) led to the formation of chromium complex [Cr(SA)(en)(2)]Clx2H(2)O(1). The crystal structure belongs to monoclinic system with the space group P2(1), R(1)=0.0358. In this compound, Cr(III) atom is six-coordinated in octahedral coordination geometry by one phenolic hydroxyl oxygen, one carboxylate oxygen from the salicylic acid and four nitrogen atoms from two ethylenediamine molecules, respectively. The transfer manners of Cr(III) from the title compound to the low-molecular-mass chelator, ethylenediamine-N,N,N',N'-tetraacetic acid (EDTA) and the iron-binding protein apoovotransferrin (apoOTf) were followed by a combination of UV-visible (UV-Vis) and fluorescence spectra in 0.01M Hepes at pH 7.4. The results show that Cr(III) can be transferred from the complex to apoovotransferrin with the retention of the salicylate acted as a synergistic anion.
authors.affiliation: Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.forename: Ying-Qi
authors.initials: YQ
authors.lastname: Li
authors.forename: Bin-Sheng
authors.initials: BS
authors.lastname: Yang
authors.forename: Shu-Ping
authors.initials: SP
authors.lastname: Huang
mesh_terms: D002712:Chlorides / Q000737:chemistry*; D017608:Chromium Compounds / Q000737:chemistry*; D003207:Conalbumin / Q000737:chemistry; D004492:Edetic Acid / Q000737:chemistry; D005029:Ethylenediamines / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D020156:Salicylic Acid / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
chemical_list: D002712:Chlorides; D017608:Chromium Compounds; D005029:Ethylenediamines; D009942:Organometallic Compounds; D003207:Conalbumin; C031234:ethylenediamine; D004492:Edetic Acid; C017133:chromous chloride; D020156:Salicylic Acid