Manganacarborane based on 5,6-dicarba-nido-decaborane with triphenylphosphine at boron atom

[Display omitted] •The reaction of manganacarborane with triphenylphosphine is described.•Isonido-manganacarborane with triphenylphosphine at the boron atom was isolated.•The position of triphenylphosphine in the carborane ligand was determined by NMR.•The structure of the complex is confirmed by X-ray diffraction analysis. In the reaction of the ionic complex of manganese based on 5,6-dicarba-nido-decaborane [1,1,1-(CO)3-isonido-1,2,4-MnC2B8H10]- tmdaH± (1) (tmdaH+- protonated form of N,N,N′,N′-tetramethyl-1,8-diaminonaphthalene) with triphenylphosphine (PPh3) in the presence of boron trifluoride etherate (BF3⋅Et2O) in benzene, the neutral complex 1,1,1-(CO)3–7-PPh3-isonido-1,2,4-MnC2B8H9 (2) was isolated as one of the main products. The position of the PPh3 substituent in the carborane ligand was established by 1H, 11B, 31P, 13C, [11B−11B]-COSY, 1H{11B} NMR spectroscopy methods and confirmed by X-ray diffraction analysis.