Journal
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
Volume 61, Issue -, Pages M1455-M1458Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S160053680502012X
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The title compound, [Ni(C15H19BCl3N6)(2)] or Ni(Tp*(Cl))(2), adds to the list of structurally characterized bis(trispyrazolyl) borate-nickel(II) complexes. The two facially coordinating N-donor Tp*(Cl) ligands impose pseudo-octahedral coordination on the nickel(II) center. The asymmetric unit consists of two half molecules, primarily differing in the torsion angles of the coordinated pyrazole rings relative to the central B-Ni-B axis of the molecules; each molecule is centrosymmetric. An average overall Ni-N distance of 2.104 (15) angstrom is observed, typical of octahedral NiN6 coordination spheres and this class of compound. The title compound readily forms good quality crystals, while its 4-H analog, Ni(Tp*)(2), does not. This characteristic is attributed to close contacts between the pyrazole 4-chloro-substituents on adjacent molecules.
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