Unusual hypoelectronic closo-clusters, such as icosahedral [(Cp*Ti)3(B9H7)(μ3-H)(μ3-Cl)2] (1) and tetracapped tetrahedral [{(Cp*Ti)3B}(μ3-BH3)2(μ3-Te)2] (2), have been synthesized and structurally characterized. Clusters 1 and 2 represent the first examples of closo-titanaboranes having… Click to show full abstract
Unusual hypoelectronic closo-clusters, such as icosahedral [(Cp*Ti)3(B9H7)(μ3-H)(μ3-Cl)2] (1) and tetracapped tetrahedral [{(Cp*Ti)3B}(μ3-BH3)2(μ3-Te)2] (2), have been synthesized and structurally characterized. Clusters 1 and 2 represent the first examples of closo-titanaboranes having bridging hydrides, where the Ti⋯Ti interactions play a pivotal role in defining their shapes and electron counts. Furthermore, two face-fused clusters, [(Cp*Ti)2(μ-Se)(μ-SePh)(μ-η3:η3-B5H9R)] (3a: R = H; 3b: R = Ph), have been isolated that deviate from Mingos fusion formalism.
Journal Title: Chemical communications
Year Published: 2025
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