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Boron complexes of redox-active diimine ligand

Fedushkin, Igor L. ; Markina, Olga V. ; Lukoyanov, Anton N. ; Morozov, Alexander G. ; Baranov, Evgenii V. ; Maslov, Maxim O. ; Ketkov, Sergey Yu.

Dalton Transactions, Dalton Transactions, 2013, Vol.42(22), pp.7952-7961 [Periódico revisado por pares]

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  • Título:
    Boron complexes of redox-active diimine ligand
  • Autor: Fedushkin, Igor L. ; Markina, Olga V. ; Lukoyanov, Anton N. ; Morozov, Alexander G. ; Baranov, Evgenii V. ; Maslov, Maxim O. ; Ketkov, Sergey Yu.
  • É parte de: Dalton Transactions, Dalton Transactions, 2013, Vol.42(22), pp.7952-7961
  • Descrição: Boron complexes (dpp-bian)BCl 2 ( 1 ) and (dpp-bian)BX (X = Cl, 2 ; Br, 3 ) (dpp-bian = 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene) have been prepared by reacting mixtures dpp-bianBX 3 (1:1) with one ( 1 ) and two ( 2 and 3 ) equivalents of sodium correspondingly in toluene. Complexes 2 and 3 reveal a moderate stability against ambient oxygen and moisture. The reaction of complex 2 with PhCCLi gave compound (dpp-bian)BCCPh ( 4 ). Treatment of 2 with potassium hydroxide afforded complexes (dpp-bian)BOH ( 5 ) and (dpp-bian)BOK ( 6 ). Boron amide (dpp-bian)BNH 2 ( 7 ) has been isolated from the reaction of compound 1 with sodium in liquid ammonia. Borane (dpp-bian)BH ( 8 ) can be prepared by the reactions of complexes 2 and 3 with LiAlH 4 . Diamagnetic compounds 28 have been characterized by IR, 1 H and 11 B NMR spectroscopy; paramagnetic complex 1 has been studied by the ESR method. Molecular structures of 2 , 5 , 7 and 8 have been determined by X-ray crystallography.

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