Trans-Bis(N,N-diethyl-ethylenediamine)-nickel(II) dibromide.

ABSTRACT: The structure of the title compound, [Ni(C(6)H(16)N(2))(2)]Br(2) or [Ni(Et(2)en)(2)]Br(2) (Et(2)en is asymmetric N,N-diethyl-ethylene-diamine), containing an Ni(II) atom (site symmetry ) in square-planar NiN(4) coordination, is described and contrasted with related structures containing Ni(II) in octa-hedral coordination with axial X(-) ligands (X(-) = variable anions). The dialkyl-ated N atom has an appreciably longer bond length to the Ni(II) atom [1.9666 (13) Å] than does the unsubstituted N atom [1.9202 (14) Å]. The Ni-N bond lengths in [Ni(Et(2)en)(2)]Br(2) are significantly shorter than corresponding values in tetra-gonally distorted [Ni(Et(2)en)(2)X(2)] compounds (X = (-)O(2)CCF(3), OH(2), or (-)NCS), which have a triplet ground state. The electronic configuration in these axially l

SUBMITTER: Ferrara SJ 

PROVIDER: S-EPMC3050186 | biostudies-literature | 2010 Dec

REPOSITORIES: biostudies-literature