SYNTHESES AND SOLID-STATE NMR OF N-BU4NTEH, ME4NSEH, AND (ME4N)2TE2 AND X-RAY CRYSTAL-STRUCTURES OF ME4NSEH AND (ME4N)2TE2

The syntheses of n-Bu4NTeH, Me4NSeH, and (Me4N)2Te2 are described. The compounds have been characterized by Te-123, Te-125, and Se-77 solid-state NMR spectroscopy and by Te-125 Mossbauer spectroscopy. The X-ray crystal structures of Me4NSeH and (Me4N)2Te2 are reported and some structural data for n-Bu4NTeH are given. For Me4NSeH: tetragonal space group P4/nmm, Z = 2, a = 7.8855(8) angstrom, c = 5.6484(5) angstrom, V = 351.22 angstrom3, R(F) = 0.020 for 180 data with I(o) greater-than-or-equal-to 2.5sigma(I(o)); isostructural with Me4NBr. For (Me4N)2Te2: cubic space group Pa3BAR, Z = 4, a = 11.499(1) angstrom, V = 1520.5 angstrom3, R(F) = 0.018 for 454 data with I(o) greater-than-or-equal-to 2.5sigma(I(o)); the ionic packing is of the anti-fluorite type.