Vapor pressure and crystal structure of platinum(II) trans-bis-(trifluoroketoiminate)

The temperature dependence of the saturated vapor pressure of the trans-Pt(ktf)(2) complex obtained from fluorinated beta-ketoimine (CF3-CO-CH2-C(NH)-CH3) was studied by the flow method. The standard thermodynamic parameters Delta H-T(o), and Delta S-T(o), of sublimation have been determined. Full crystal-chemical study has been performed for the complex. Crystal data for C10H10F6N2O2Pt: a = 5.9790(8) angstrom, b = 7.373(2) angstrom, c = 8.5767(2) angstrom, alpha = 84 05(2)degrees, beta = 72.43(1)degrees, gamma = 67.14(1)degrees, V = 332.1 (1) angstrom(3), Z = 1, d(calc) = 2.496 g/cm(3), triclinic, space group P (1) over bar. The structure is molecular and consists of isolated trans-Pt(ktf)(2) complexes. The Pt atom lies at the symmetry center and has a square planar environment of two oxygen and two nitrogen atoms; the distances Pt-O (1.984 angstrom) and Pt-N (1.969 angstrom) are similar within the limits of 2 sigma; the OPtN bond angle is 93.9 degrees. Molecular packing in crystal is considered based on structural data; van der Waals energy of the crystal lattice of trans-Pt(ktf)(2) was calculated by the atom-atom potential method.