title: Fluorinated tris(pyrazolyl)borate ligands without the problematic hydride moiety: isolation of copper(I) ethylene and copper(I)-tin(II) complexes using [MeB(3-(CF3)Pz)3]-.
abstract: The thallium derivative of a fluorinated, B-methylated, tris(pyrazolyl)borate ligand, [MeB(3-(CF3)Pz)3]-, has been synthesized via a two-step process using the corresponding pyrazole, Li[MeBH3], and thallium(I) acetate. Reaction of [MeB(3-(CF3)Pz)3]Tl with CuBr in the presence of ethylene leads to [MeB(3-(CF3)Pz)3]Cu(C2H4). It is a thermally stable solid. [MeB(3-(CF3)Pz)3]Cu(C2H4) reacts with [(Bn)2ATI]SnCl to yield [MeB(3-(CF3)Pz)3]Cu<--Sn(Cl)[(Bn)2ATI], featuring an unsupported Cu(I)-Sn(II) bond [2.4540(4) A].
authors.affiliation: Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA. dias@uta.edu
authors.forename: H V Rasika
authors.initials: HV
authors.lastname: Dias
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Wang
authors.forename: Himashinie V K
authors.initials: HV
authors.lastname: Diyabalanage