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Issue 8, 2020
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Homoleptic trimethylsilylchalcogenolato zincates [Zn(ESiMe3)3] and stannanides [Sn(ESiMe3)3] (E = S, Se): precursors in solution-based low-temperature binary metal chalcogenide and Cu2ZnSnS4 (CZTS) synthesis

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Abstract

Organic cation salts with homoleptic zincate and stannanide anions, Ph4P [Zn(ESiMe3)3] (E = S (1a), Se (1b)) and Cat [Sn(ESiMe3)3] (Cat = Ph4P+ (E = S (2a-Ph4P); Cat = PPN+ (E = S 2a-Ph4P, Se (2a)) are presented and structurally characterized. Efforts to isolate neutral thermally metastable stannane precursors [Sn(ESiMe3)4] (E = S (3), Se(4)) are reported as well. The thermal decomposition of the presented precursors to yield binary sulfides and selenides of zinc and tin is investigated. Furthermore, the potential of using the title anions as precursors in solution-based low-temperature synthesis of Cu2ZnSnS4 (CZTS) by coprecipitation with [Cu(tmtu)3]PF6 and subsequent annealing is discussed.

Graphical abstract: Homoleptic trimethylsilylchalcogenolato zincates [Zn(ESiMe3)3]− and stannanides [Sn(ESiMe3)3]− (E = S, Se): precursors in solution-based low-temperature binary metal chalcogenide and Cu2ZnSnS4 (CZTS) synthesis

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Supplementary files

Article information


Submitted
24 Oct 2019
Accepted
29 Jan 2020
First published
30 Jan 2020

Dalton Trans., 2020,49, 2517-2526
Article type
Paper

Homoleptic trimethylsilylchalcogenolato zincates [Zn(ESiMe3)3] and stannanides [Sn(ESiMe3)3] (E = S, Se): precursors in solution-based low-temperature binary metal chalcogenide and Cu2ZnSnS4 (CZTS) synthesis

J. Guschlbauer, T. Vollgraff and J. Sundermeyer, Dalton Trans., 2020, 49, 2517
DOI: 10.1039/C9DT04144C

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