SYNTHESIS AND CRYSTAL-STRUCTURES OF PHENYLTRIMETHYLAMMONIUM SALTS OF HEXABROMOTELLURATE(IV), [C6H5(CH3)(3)N](2)[TEBR6], AND MU-BROMOBIS(TETRABROMOTELLURATE(IV)))-MU-BROMINE], [C6H5(CH3)(3)N](2N)[TE2BR10-CENTER-DOT-BR-2](N)

The crystal structures of [C6H5(CH3)(3)N](2)[TeBr6] (1) and [C6H5(CH3) (3)N](2n)[Te2Br10 . Br-2](n) (2) have been determined by X-ray methods and refined to R = 0.042 and 0.044 for 1883 and 2793 observed reflect ions, respectively. Crystals of 1 are monoclinic, space group P2(1)/a with Z=2 and a=14.314(1), b = 10.746 (1), c = 8.947(1) Angstrom, beta = = 103.89(1)degrees. Crystals of 2 are triclinic, space group P (1) o ver bar with Z=1 and a=8.909(1), b=8.989(1), c=11.845(1) Angstrom, alp ha = 95.39(1)degrees, beta=101.88(1)degrees, gamma=90.44(1)degrees. Th e [TeBr6](2-) octahedron of 1 is centrosymmetric with Te-Br=2.7054(6), 2.7056(6), 2.6931(5) Angstrom and Br-Te-Br=90.16(2), 90.15(2), 91.28( 2)degrees. The dimeric, centrosymmetric [Te2Br10](2-) unit of 2, consi sting of two edge-sharing distorted TeBr6 octaheda, has Te-Br dimensio ns 2.5375(7) and 2.5419(8) Angstrom for equatorial terminal, 2.9594(7) and 2.9666(7) Angstrom for equatorial bridging, and 2.6915(8) and 2.6 775(9) Angstrom for axial bonds. One of the axial Br atoms in each TeB r6 octahedron is linked to an equivalent Br atom by a Br-2 molecule, a nd so forming a polymeric chain, [Te2Br10 . Br-2](n)(2n-), with Br-Br- 2 = 3.1217(11) Angstrom, Br-Br'=2.3324(17) Angstrom,Br-Br-Br'= = 174.2 9(6)degrees.