Synthesis and Characterization of Antimony(III) Complexes of Thioamides, and Crystal Structure of {[Sb(Imt)₂Cl₂]₂((₂‐Imt)}Cl₂(Imt=Imidazolidine‐2‐thione)

Abstract

Antimony(III) complexes of thioamides [thioamides＝thiourea (Tu), N,N'-dimethylthiourea (Dmtu), tetramethylthiourea (Tmtu), imidazolidine-2-thione (Imt) and diazinane-2-thione (Diaz)] with the general formulae, Sb(thione) n Cl 3 (n＝1, 2, 2.5, 3) were prepared and characterized by elemental analysis, IR and NMR ( 1 H, 13 C) spectroscopic methods. The spectral data of the complexes are consistent with the coordination of the thiones to antimony(III). The crystal structure of one of them, {[Sb(Imt) 2 Cl 2 ] 2 (µ 2 -Imt)}Cl 2 (1), was determined by X-ray crystallography, which shows that the complex is dinuclear consisting of two [Sb(Imt) 2 Cl 2 ] units bridged by an Imt molecule. In 1, the antimony atom is bonded to two chlorine atoms, two sulfur atoms of coordinated Imt molecules and one sulfur atom of a bridging Imt molecule. The antimony environment can be considered to be distorted octahedral with one Cl -ion weakly bound to antimony.

Synthesis and Structural Determination of a Novel Heterometallic Complex [Sb2(edta)2‐µ4‐Co(H2O)2]·5.15H2O

“…27 However, less work on the main group elements participating in the heterometallic complexes due to special properties of the main elements has been reported. [28][29][30][31][32][33][34][35] Among them, a series of lanthanide-main group elements compounds have been synthesized under the solvothermal conditions. 34,35 In this paper, antimony-based heterometallic complex [Sb 2 (edta) 2 -µ 4 -Co(H 2 O) 2 ]•5.15H 2 O was synthesized.…”

Novel Antimony(iii) Halide Complexes With Some N-Alkyl Thioureas: Synthesis, Characterization and Study of Their Effect Upon the Catalytic Oxidation of Linoleic Acid to Hydroperoxylinoleic Acid by Lipoxygenase

“…One of the reasons of this geometric diversity of antimony(III) compounds is the lone pair electrons located on the antimony atom [2]. Thus, antimony(III) halide compounds with thioamide ligands contain a five coordinated metal center with a stereochemically active lone pair [3][4][5][6][7][8]. Antimony has been used as a drug for over more than 100 years.…”

Thermochemical Parameters of Tetramethylthiourea Adducts of Certain Metal(II) Bromides

“…R. Sah et al [2] synthesized and characterized transition Metal(II) complexes of heterocyclic thiomides. H. Ajaz et al [3] got the crystal structure of complexes of Antimony(II) with thioamides. T. Singh et al [4] studied thioamide complexes of ruthenium.…”