Jungen S, Paenurk E, Chen P. Synthesis, Spectroscopic, and Structural Characterization of Organyl Disulfanides and a Tetrasulfanide.
Inorg Chem 2020;
59:12322-12336. [PMID:
32790993 DOI:
10.1021/acs.inorgchem.0c01426]
[Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Various room-temperature-stable monoorganylpolysulfanides of the form [X][RSn] (X = [PPh4]+, [PNP]+, [NEt4]+; R = Ph, t-Bu, n ≥ 2) were synthesized in a simple and versatile one-step process starting from sodium thiolates and elemental sulfur. The compounds were characterized by X-ray crystal structure analysis, NMR spectroscopy, microelemental analysis, and electrospray mass ionization spectrometry including collision-induced dissociation experiments. While these salts are well-defined species as crystals, they undergo complex equilibria in solution. In one case, compounds ranging from n = 1-8 have been observed in solution. Structural features, dynamics in solution, as well as thermochromic properties of one of the compounds, [PPh4][PhS2], are investigated in detail by temperature- and pressure-dependent X-ray crystal structure analysis. The experimental data are complemented by periodic boundary density functional theory calculations on the crystal structures, as well as energy decomposition analyses.
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