The structure of HEXAFLUOROACETONE AZINE (cas 1619-84-7) bis(triphenylphosphine)platinum

Add time:07/24/2019    Source:sciencedirect.com

The crystal structure of HEXAFLUOROACETONE AZINE (cas 1619-84-7) bis(triphenylphosphine)platinum, C42H30F12N2P2Pt, has been determined by single-crystal X-ray diffraction techniques. The compound crystallizes in the monoclinic space group C2/c with a 31.155(3), b 13.091(1), c 21.828(2) Å, β 109.23(1)° and Z = 8. Manual diffractometer methods (Cu radiation, λ 1.54050 Å) were used to obtain 5046 reflections with Inet ⩾ 8 counts sec−1 at 21°C. The structure was solved by the heavy atom method and was refined, including CH2Cl2 at occupancy 0.4 on a crystallographic 2-fold axis, by block-diagonal least-squares methods to R = 0.056. Location of the phenyl hydrogen atoms was not attempted. The platinum atom is σ-bonded to one CN of the azine ligand forming a PtCN three-membered ring. Coordination about platinum consists of a slightly distorted square-planar arrangement of the phosphorus atoms and the bonded carbon and nitrogen atoms of the unsaturated ligand. The observed difference in PtP bond lengths is rationalized in terms of the trans-influence.

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