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2D nanocrystalline ternary selenides Cu2MSe4 (M = Mo/W)

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Abstract

A high-temperature metathesis reaction between CuBr and [Ph4P]2MSe4 (M = Mo or W) gave rise to nanocrystalline Cu2MSe4 with a phase-pure M = Mo compound that was obtained for the first time. After exploring the formation mechanism, we found that the sub-stoichiometric ratios of CuBr to MSe42− resulted in the formation of a linear byproduct impurity, [Ph4P]CuMSe4 (M = Mo or W). However, excess CuBr selectively steered the reaction to the desired Cu2MSe4. As a consequence of the newfound similarity in the reaction conditions for both metals, we have demonstrated the applicability of this method towards a mixed Mo/W quaternary composition.

Graphical abstract: 2D nanocrystalline ternary selenides Cu2MSe4 (M = Mo/W)

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Publication details

The article was received on 12 Aug 2019, accepted on 09 Sep 2019 and first published on 09 Sep 2019


Article type: Paper
DOI: 10.1039/C9DT03282G
Dalton Trans., 2019, Advance Article

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    2D nanocrystalline ternary selenides Cu2MSe4 (M = Mo/W)

    M. M. Li and S. A. Ivanov, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C9DT03282G

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