Synthesis and Crystal Structure of the Bioinorganic Complex [Sb(Hedta)]·2H2O. (13th February 2014)

• Record Type: Journal Article
• Authors: Li, Di; Zhong, Guo-Qing
• Other Names: López Concepción Academic Editor.
• Is Part Of: Bioinorganic chemistry and applications. Volume 2014(2014)
• Publication Date: 2014-02-13
• Subjects: Bioinorganic chemistry -- Periodicals; Bioinorganic chemistry; Biochemistry; Inorganic Chemistry; Chemistry, Bioinorganic; Periodicals; 572.51
• DOI: 10.1155/2014/461605
• Languages: English
• ISSNs: 1565-3633

Abstract

Abstract : The antimony(III) complex [Sb(Hedta)]·2H2 O was synthesized with ethylenediaminetetraacetic acid (H4 edta) and antimonous oxide as main raw materials in aqueous solution. The composition and structure of the complex were characterized by elemental analysis, infrared spectra, single crystal X-ray diffraction, X-ray powder diffraction, thermogravimetry, and differential scanning calorimetry. The crystal structure of the antimony(III) complex belongs to orthorhombic system, space group Pna2(1), with cell parameters ofa = 18.4823 (18) Å, b = 10.9408 (12) Å, c = 7.3671 (5) Å, V = 1489.7 (2) Å 3, Z = 4, andD c = 1.993 g cm −3 . The Sb(III) ion is five-coordinated by two amido N atoms and three carboxyl O atoms from a single Hedta 3− ligand, forming a distorted trigonal bipyramid geometry. The thermal decomposition processes of the complex include dehydration, oxidation, and pyrolysis of the ligand, and the last residue is Sb2 O3 at the temperature of 570°C.