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Variations in the Interplay of Intermetallic and Metal Chalcogenide Units in Organotin–Copper Selenide Clusters
11
Citations
31
References
2019
Year
We report the formation and structures of two new organotin-copper selenide clusters that were obtained in a two-step procedure. First, [(R<sup>1</sup>Sn)<sub>4</sub>Se<sub>6</sub>] [R<sup>1</sup> = CMe<sub>2</sub>CH<sub>2</sub>C(O)Me] is reacted with [Cu(PPh<sub>3</sub>)<sub>3</sub>Cl] and (SiMe<sub>3</sub>)<sub>2</sub>Se to form a bright-orange powder, the nature of which could not be identified in detail, yet a suspension of it in CH<sub>2</sub>Cl<sub>2</sub> reacts with N<sub>2</sub>H<sub>4</sub>·H<sub>2</sub>O to afford single crystals of two cluster compounds, either [(Cu<sub>3</sub>Sn){(R<sup>2</sup>Sn)<sub>2</sub>Se<sub>4</sub>}<sub>2</sub>{(R<sup>2</sup>Sn<sub>2</sub>)Se<sub>3</sub>}] (<b>1</b>) or [(N<sub>2</sub>H<sub>4</sub>)(Cu<sub>4</sub>Sn){(R<sup>2</sup>Sn)<sub>2</sub>Se<sub>4</sub>}<sub>3</sub>] [<b>2</b>; R<sup>2</sup> = CMe<sub>2</sub>CH<sub>2</sub>C(NNH<sub>2</sub>)Me]. Both are based on an intermetallic Cu<sub><i>x</i></sub>Sn cluster core (<i>x</i> = 3, 4), which is surrounded by organotin selenide units in different fashions. The results foster the assumption of a complex equilibrium to be present in according reaction mixtures.
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