| Abstract: | The Formation of Gallium Chalcogen Heterocubanes by the Reaction of the Alkylgallium(I) Compound Ga4[C(SiMe3)3]4 with Sulfur, Selenium, and Tellurium The alkylgallium(I) compound Ga4[C(SiMe3)3]4 1 , which monomerizes in dilute solutions, reacts with elemental sulfur, selenium, and tellurium in boiling n-hexane to yield the corresponding Ga4X4R4 cage compounds in a high yield. As shown by crystal structure determinations, the products have distorted Ga4X4 heterocubanes in their molecular centers with a slightly increasing distortion for the heavier chalcogen atoms. While the selenium and tellurium derivatives show a very low solubility in benzene, the sulfur compound dissolves readily accompanied by the dissociation into the (RGaS)2 dimer. |
