Engelbrecht Ilana, Visser Hendrik G, Roodt Andreas
Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein 9300, South Africa.
Acta Crystallogr Sect E Struct Rep Online. 2012 Jul 1;68(Pt 7):m916-7. doi: 10.1107/S1600536812026359. Epub 2012 Jun 16.
The title compound, Pt(C₂₉H₂₉NP₂)₂₂, consists of a Pt(II) atom, situated on an inversion centre, coordinated by two diphosphinoamine bidentate ligands and charge-balanced by two trifluoro-methane-sulfonate anions. The Pt(II) atom has a distorted square-planar geometry defined by the four P atoms. The distortion is illustrated by the P-Pt-P bite angle of 70.31 (4)°. The geometry around the N atom deviates from a trigonal-planar geometry, evidenced by the P-N-P bite angle of 102.3 (2) °. The N atom is displaced by 0.114 (4) Å from the C/P/P plane. In order to coordinate, the orientation of the phenyl rings alters from a C(s) conformation to a C(2v) conformation. The cyclo-pentane ring is slightly twisted: the puckering parameters are q(2) = 0.420 (5) Å and ϕ = 26.5 (8) °. The trifluoro-methane-sulfonate anion displays a 0.511 (11):0.489 (11) positional disorder. Weak inter- and intra-molecular C-H⋯O hydrogen bonds influence the crystal packing.
标题化合物Pt(C₂₉H₂₉NP₂)₂₂由一个位于对称中心的Pt(II)原子组成，该原子由两个二膦基胺双齿配体配位，并由两个三氟甲磺酸根阴离子进行电荷平衡。Pt(II)原子具有由四个P原子定义的扭曲平面正方形几何构型。这种扭曲由P-Pt-P咬角70.31 (4)°体现。N原子周围的几何构型偏离三角平面几何构型，P-N-P咬角102.3 (2) °证明了这一点。N原子相对于C/P/P平面位移了0.114 (4) Å。为了配位，苯环的取向从C(s)构象转变为C(2v)构象。环戊烷环略有扭曲：褶皱参数为q(2) = 0.420 (5) Å和ϕ = 26.5 (8) °。三氟甲磺酸根阴离子表现出0.511 (11):0.489 (11)的位置无序。分子间和分子内的弱C-H⋯O氢键影响晶体堆积。
