Lewis Base Adducts of Group 1B Metal(I) Compounds. 8. High-resolution solid-state 31P nuclear magnetic resonance spectra of tetrameric (triphenylphosphine)copper(I) halide complexes and crystal structure determination of cubane [PPh3CuBr]4

摘要: Crystal structure analysis of the tetrameric 1:l adduct PPh3 with CuBr, [CuBrPPhpl4, recrystallized from refluxing toluene, shows that it has crystallized in a 'cubane" rather than previously recorded "step" form. A residual 0.044 was obtained for 3708 independent observed diffractometer reflections at 295 K after full-matrix least-squares refinement; crystals are isomorphous chloride, an orthorhombic Pbcn cell, = 17.662 ( 5 ) A, b 20.748 (7) c 18.351 (6) and Z(tetramer) 4. The existence cubane form bromide discovered during high-resolution solid-state 31P NMR spectral studies on series cuprous halide-triphenylphosphine complexes.