Peters B, Santner S, Donsbach C, Vöpel P, Smarsly B, Dehnen S. Ionic liquid cations as methylation agent for extremely weak chalcogenido metalate nucleophiles.
Chem Sci 2019;
10:5211-5217. [PMID:
31191876 PMCID:
PMC6540918 DOI:
10.1039/c9sc01358j]
[Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 04/20/2019] [Indexed: 02/01/2023] Open
Abstract
Selective in situ methylation of terminal chalcogenide ligands of molecular chalcogenido metalate anions in ionothermal reactions with alkylimidazolium-based ionic liquids yields a series of organo-functionalized chalcogenido metalate compounds. We present the syntheses and crystal structures of (C4C1C1Im)4+x [Sn10S16O4(SMe)4][An] x (1a-1f), (dmmpH)6[Mn4Sn4Se13(SeMe)4] (2), and (C n C1Im)6[Hg6Te10(TeMe)2] (3a, 3b). The methylation was confirmed by Raman spectroscopy, and the optical absorption properties of the methylated compounds were determined and compared to purely inorganic analogs.
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