TY - JOUR
T1 - Five-Coordinate Nickel(III). The Crystal and Molecular Structure of NiBr3(P(C6H5)(CH3))2)2 0.5NiBr2(P(C6H5)(CH3)2)2 C6H6
AU - Stalick, Judith K.
AU - Ibers, James A.
PY - 1970/3/1
Y1 - 1970/3/1
N2 - The crystal and molecular structuee of the 1:0.5:1 adduct of tribromobis(phenyldimethylphosphine)nickel(III), dibromo-bis(phenyldimethylphosphine)nickel(II), and benzene has been determined from three-dimensional X-ray data collected by counter methods. The structure has been refined by least-squares techniques to a final R factor on F of 0.054. The material crystallizes in space group Ci1-P1 of the triclinic system, with two molecules of NiBr3(P(C6H5)(CH3)2)2, one molecule of NiBr2(P(C6H5)(CH3)2)2, and two molecules of benzene in a cell of dimensions a = 9.021 (5), b = 17.951 (10), c = 11.181 (6) A; a = 98° 52 (1)′, β = 94° 29 (1)′, γ = 90° 44 (1)′. The observed and calculated densities are 1.67 ± 0.02 and 1.68 g/cm3, respectively. The four- and five-coordinate molecules are well separated. The trans-planar complex NiBr2(P-(C6H5)(CH3)2)2 is crystallographically required to possess a center of inversion; the Ni-P and Ni-Br bond lengths are 2.251 (3) and 2.297 (2) Å, respectively. The five-coordinate Ni(III) complex NiBr3(P(C6H5)(CH3)2)2 possesses a trigonal-bipyramidal geometry with axial phosphine groups. There is a slight distortion of the molecule in the plane of the Ni and three Br atoms, which could arise from Jahn-Teller effects. The Ni-P bond distances are 2.263 (3) and 2.273 (3) Å, and the Ni-Br bond distances are 2.349 (2), 2.375 (2), and 2.339 (2) Å.
AB - The crystal and molecular structuee of the 1:0.5:1 adduct of tribromobis(phenyldimethylphosphine)nickel(III), dibromo-bis(phenyldimethylphosphine)nickel(II), and benzene has been determined from three-dimensional X-ray data collected by counter methods. The structure has been refined by least-squares techniques to a final R factor on F of 0.054. The material crystallizes in space group Ci1-P1 of the triclinic system, with two molecules of NiBr3(P(C6H5)(CH3)2)2, one molecule of NiBr2(P(C6H5)(CH3)2)2, and two molecules of benzene in a cell of dimensions a = 9.021 (5), b = 17.951 (10), c = 11.181 (6) A; a = 98° 52 (1)′, β = 94° 29 (1)′, γ = 90° 44 (1)′. The observed and calculated densities are 1.67 ± 0.02 and 1.68 g/cm3, respectively. The four- and five-coordinate molecules are well separated. The trans-planar complex NiBr2(P-(C6H5)(CH3)2)2 is crystallographically required to possess a center of inversion; the Ni-P and Ni-Br bond lengths are 2.251 (3) and 2.297 (2) Å, respectively. The five-coordinate Ni(III) complex NiBr3(P(C6H5)(CH3)2)2 possesses a trigonal-bipyramidal geometry with axial phosphine groups. There is a slight distortion of the molecule in the plane of the Ni and three Br atoms, which could arise from Jahn-Teller effects. The Ni-P bond distances are 2.263 (3) and 2.273 (3) Å, and the Ni-Br bond distances are 2.349 (2), 2.375 (2), and 2.339 (2) Å.
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U2 - 10.1021/ic50085a005
DO - 10.1021/ic50085a005
M3 - Article
AN - SCOPUS:0039608788
SN - 0020-1669
VL - 9
SP - 453
EP - 458
JO - Inorganic chemistry
JF - Inorganic chemistry
IS - 3
ER -