Synthesis and structure of [NiL6][B10H10] (L = DMF or DMSO) as precursors for solid-phase synthesis of nickel(II) coordination compounds

•Complexes [NiL6][B10H10] (L = DMF, DMSO) were synthesized and characterized.•[NiL6][B10H10] were used in solid-phase synthesis of [NiL3][B10H10] (L = Bipy or Phen).•Weak B–H…H–C interactions found in the [NiL6][B10H10] crystals are detected in the IR spectra.

Synthesis and structure of complexes [NiL6][B10H10] (L = DMF (1) or DMSO (2)) are described. Both complexes have been prepared from nickel(II) chloride and (Et3NH)2[B10H10] in the corresponding solvent. Compounds 1 and 2 have been characterized by elemental analysis, IR spectroscopy, single-crystal and powder X-ray diffraction. Weak interactions between BH-groups of the boron cluster and CH-groups of DMF and DMSO molecules found in crystals 1 and 2 have been detected in the IR spectra. Complexes [NiL6][B10H10] (L = DMF, DMSO) can be applied in solid-phase synthesis of nickel(II) complexes with azaheterocyclic ligands. Complexes [NiL3][B10H10] (L = Bipy or Phen) have been selectively prepared by mechanical activation of 1 + 3Phen and 2 + 3Bipy mixtures.

Graphical abstractComplexes [NiL6][B10H10] (L = DMF, DMSO) were synthesized from nickel(II) chloride and (Et3NH)2[B10H10] in the corresponding solvent and characterized by X-ray diffraction. They were applied in solid-phase synthesis of complexes [NiL3][B10H10] (L = Bipy or Phen).Figure optionsDownload full-size imageDownload as PowerPoint slide