1351backgrounds was equal to half of the time required for the peak scan. The intensities of three standard reflections were measured every 1.5 h of X-ray exposure time for both compounds, and no decay with time was noted. The data were corrected for Lorentz, polarization, and background effects. The effects of absorption were not significant as judged by empirical $-scan data" (less than 3% in intensity), and therefore absorption corrections were not applied.Solution and Refinement. The structures were solved by conventional heavy-atom techniques. The Ru atoms were located by Patterson syntheses. Full-matrix least-squares refinement and difference Fourier calculations were used to locate all remaining non-hydrogen atoms. The atomic scattering factors were taken from the usual tabulation,12 and the effects of anomalous dispersion were included in F, by using Cromer and Ibers'l, values of Af' and Af". For compound 6 the positions of the phenyl and anion hydrogen atoms were calculated with use of the program HYDRO' (C-H distance set at 0.95 A) and included in the structure factor calculations but were not refined. The Ru hydride in 6 was lwated by difference Fourier analysis. The positional parameters of the hydride were refined, but its thermal parameter was fixed. In compound 3, the Ru hydrides were not located. The bridging S02CF3 group was found to be disordered such that the S1, C3, and F3 atoms had two positions each with a 50% occupancy. The two positions, labeled primed and unprimed, were refined to give reasonable distances and angles. The two positions found for the bridging S02CF3 correspond to isomers that result from tilting of the SCF, group in different directions. Only one of the

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Resonance Raman spectra of the cubic metal-halide complexes having the general formula [M(6)X(8)Y(6)](2)(-) (M = Mo or W; X, Y = Cl, Br, or I) are reported. The three totally symmetric fundamental vibrations of these complexes are identified. The extensive mixing of the symmetry coordinates that compose the symmetric normal modes expected in these systems is not observed. Instead the "group-frequency" approximation is valid. Furthermore, the force constants of both the apical and face-bridging metal-halide bonds are insensitive to the identity of either the metal or the halide. Raman spectra of related complexes with methoxy and benzenethiol groups as ligands are reported along with the structural data for [Mo(6)Cl(8)(SPh)(6)][NBu(4)](2). Crystal data for [Mo(6)Cl(8)(SPh)(6)][NBu(4)](2) at -156 degrees C: monoclinic space group P2(1)/c; a = 12.588(3), b = 17.471(5), c = 20.646(2) Å; beta = 118.53(1) degrees, V = 3223.4 Å(3); d(calcd) = 1.664 g cm(-)(3); Z = 2.

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