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[B(CO2H)4] and [B(CNCH3)4]3+: Homoleptic Boron Complexes Containing Carboxy and Methylisocyanide Ligands

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  • Financial support by the Deutsche Forschungsgemeinschaft (DFG) and Merck KGaA, Darmstadt, is gratefully acknowledged.

Abstract

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Series clincher: The synthesis of salts of the [B(CO2H)4] ion and the [B(CNCH3)4]3+ ion starting from [nBu4N][B(CN)4] are described. Thus, the series including [B(CN)4], [B(CO2H)4], and [B(CF3)4] has now been completed. The figure shows the [B(CO2)2(CO2H)2]3− ion in [Co(NH3)6][B(CO2)2(CO2H)2]⋅2 H2O (O red, C black, B yellow, H white).

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