The synthesis, Raman spectrum, and crystal and molecular structure of (TTF)Pd(acac)2, (C6H4S4)Pd(C5H7O2)2, are reported. The v3 mode for the TTF molecule in the complex occurs at 1517 cm-1, indicative of the presence of only neutral TTF. An X-ray diffraction study is in accord with the Raman evidence of low charge transfer. Pertinent crystallographic data for (TTF)Pd(acac)2 are space group P21/c, a = 11.142 (3) A, b = 11.642 (3) A, c = 7.920 (3) A, β = 99.97 (2)°, V = 1011.9 A3, Z = 2 [requiring 1(Ci) molecular symmetry for both TTF and Pd(acac)2], Dmeasd = 1-671 (2) g cm-3, and Dcalcd = 1.670 g cm-3. The structure was solved by standard crystallographic methods and refined, on the basis of 2101 observed data, to an R value of 0.056. The crystal packing is pseudo-C centered with the Pd(acac)2 species occupying the vertices of the unit cell and the TTF molecules assuming positions at the center of the ab face. The interactions between molecular components are solely van der Waals in nature. Neither of the molecular constituents are self-associated in the solid. The platinum analogue (TTF)Pt(acac)2 is isomorphous, and unit cell data are space group P21/c, a = 11.152 (2) A, b = 11.644 (4)A, c = 7.904 (2) A, β = 99.98 (2)°, V = 1010.8 A3, and Z = 2.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry