Some novel 3,5-dimethylpyrazolylborato compounds: crystal and molecular structures of [B{Me2C3N2H}3{Me2C3N2H2}] and [HB{Me2C3N2H}3BH]+(TaCl6)–
Abstract
From reactions involving K[HB(Me2pz)3] separately with (C5H5)2 TiCl2, NbCl5, and TaCl5, the novel compounds [B(Me2pz)3(Me2pzH)](1), NbCl4[HB(Me2pz)3BH]+(MCl6)–(4; M = Nb, Ta), and MCl[HB(Me2pz)3](Me2pz)3(5; M = Nb)(Me2pzH = 3,5-dimethylpyrazole) have been isolated and X-ray single crystal structure determinations carried out on (1) and (4; M = Ta).