Potassium-telluroether interactions: structural characterisation and computational analysis. Journal Articles uri icon

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abstract

  • Dissolution of the potassium complex [K(ATe2Tripp2)(dme)2] (1-Te) in THF, layering with hexanes, and cooling to -30 °C afforded X-ray quality crystals of [K(ATe2Tripp2)(THF)3] (2-Te). The K-TeR2 distances in 2-Te are substantially shorter than those in 1-Te, and DFT and QTAIM calculations support the presence of K-TeR2 interactions, providing the first unambiguous examples of s-block-telluroether bonding. Attempts to prepare bulk quantities of 2-Te afforded [K(ATe2Tripp2)(THF)2] (3-Te), and further drying yielded [K(ATe2Tripp2)(THF)] (4-Te) and [K(ATe2Tripp2)]x (5-Te). The selenium analogues of 2-Te, 3-Te and 4-Te (2-Se, 3-Se and 4-Se), were also prepared, and 2-Te, 2-Se, 3-Se and 5-Te were crystallographically characterised.

publication date

  • February 13, 2025