Tin(II) Aminothiolate and Tin(IV) Aminothiolate Selenide Compounds as Single-Source Precursors for Tin Chalcogenide Materials.

Author(s) Park, J.H.; Kang, S.Gu; Lee, Y.Kuk; Chung, T.M.; Park, B.Keun; Kim, C.Gyoun
Journal Inorg Chem
Date Published 2020 Mar 16
Abstract

Tin aminothiolate compounds Sn(dmampS) () and Sn(dmampS)Se (), where dmampS = 1-(dimethylamino)-2-methylpropane-2-thiolate, were synthesized. The molecular structures of and reveal a seesaw and distorted trigonal-bipyramidal geometry, respectively. The H NMR spectrum of shows two types of resonances for the methyl groups of the α-carbon, methyl groups of the amino groups, and methylene groups at room temperature. On the other hand, the H NMR spectrum of exhibits a single resonance for each of these groups. According to variable-temperature H NMR analysis, each of these two types of resonances occurring at relatively low temperatures (under 223 K for and under 333 K for ) are merged as a single resonance with increasing temperature. By using thermogravimetric and thermal decomposition analyses, the residual materials of compounds and are confirmed to be SnS and SnSSe, respectively. Compound was subjected to a metal-organic chemical vapor deposition process, which allowed for the deposition of a dense and well-faceted orthorhombic phase SnS thin film on a SiO/Si substrate with ∼200 nm thickness.

DOI 10.1021/acs.inorgchem.9b03369
ISSN 1520-510X
Citation Inorg Chem. 2020;59(6):35133517.

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