Antimony(III) Halide-Assisted Stereospecific Coordination of Thione

Mannem Adinarayana; Ganesan Prabusankar

doi:10.1002/asia.202100325

Antimony(III) Halide-Assisted Stereospecific Coordination of Thione

Chem Asian J. 2021 Jul 5;16(13):1767-1772. doi: 10.1002/asia.202100325. Epub 2021 May 21.

Authors

Mannem Adinarayana¹, Ganesan Prabusankar¹

Affiliation

¹ Department of Chemistry, Indian Institute of Technology Hyderabad Kandi, Sangareddy, Telangana, 502285, India.

PMID: 33949120
DOI: 10.1002/asia.202100325

Abstract

The antimony halide-aided stereospecific coordination of a cyclic thiourea-type of ligand is observed for the first time. The antimony(III) imidazole thione complexes syn-[(L¹ )SbCl₃ ] (syn-1) and anti-[(L¹ )SbBr₃ ] (anti-2) have been synthesized in very good yield by the reaction between the spatially defined steric impact ligand [(IPaul)S] (L¹ ) ([(IPaul)S]=1,3-bis(2,4-methyl-6-diphenyl phenyl)imidazole thione) and corresponding antimony halide. The stereoselective formation of complexes syn-1 and anti-2 has been confirmed by both NMR and single-crystal X-ray diffraction studies. Interestingly the stereospecific nature of syn-1 and anti-2 remains intact in solution. Furthermore, the thermal stability of antimony(III) imidazole thione complexes were examined by TGA analysis.

Keywords: Antimony; Conformation; Imidazole; Main Group Chemistry; Thione.

Abstract

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