GeClx[Co(CO)3PR3]4−x (x = 0–3; R = nPr, nBu): from cobalt substituted germanes to novel binary cluster compounds.

We report the synthesis and characterization of various compounds containing the 1,7,9-hydroxylated closododecahydrododecaborate (B 12 H 9 (OH) 3 2− ) cluster motif. Specifically, we show how the parent compound can be synthesized on the multigram scale and further perhalogenated, leading to a new class of vertex-differentiated weakly coordinating anions. We show that a postmodification of the hydroxyl groups by alkylation affords further opportunities for tailoring these anions' stability, steric bulk, and solubility properties. The resulting dodecaborate-based salts were subjected to a full thermal and electrochemical stability evaluation, showing that many of these anions maintain thermal stability up to 500 °C and feature no redox activity below ∼1 V vs Fc/Fc + . Mixed hydroxylated/halogenated clusters show enhanced solubility compared to their purely halogenated analogs and retain weakly coordinating properties in the solid state, as demonstrated by ionic conductivity measurements of their Li + salts.

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GeCl_x[Co(CO)₃PR₃]_4−x (x = 0–3; R = ⁿPr, ⁿBu): from cobalt substituted germanes to novel binary cluster compounds.

Abstract: The synthesis of a variety of cobalt substituted germanes of the composition GeClx[Co(CO)3PR3]4−x (x = 0-3; R = nPr, nBu) is presented, which can be obtained in average to good...

Cited by 2 publications

References 34 publications

The tale of alkyl- and acylcobalt carbonyls

The tale of alkyl- and acylcobalt carbonyls

Vertex Differentiation Strategy for Tuning the Physical Properties of closo-Dodecaborate Weakly Coordinating Anions

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