NEW-TYPE OF POLYMERIC INDIUM TELLURIDES - LOW-TEMPERATURE SYNTHESIS AND STRUCTURE CHARACTERIZATION OF [M(EN)(3)]IN2TE6 (M=FE, ZN) AND -3(EN)(3)(MU(2)-TE-2)(3)(MU(3)-TE)(MU(3)-O)]IN2TE6 AND -3(EN)(3)(MU(2)-TE-2)(3)(MU(3)-TE)(MU(3)-O)]IN2TE6

Crystal growth of metal tellurides and tellurometalates employing solv othermal reactions at temperatures below 200 degrees C have resulted i n four new indium tellurium phases, [Fe(en)(3)](In2Te6) (I), [Zn(en)(3 )](In2Te6) (II), and alpha- and -3(en)(3)(mu(2)-Te-2)(3)(mu(3)-Te)(mu( 3)-O)]In2Te6 (III-alpha and III-beta). Single crystal X-ray diffractio n analyses show that I and II are isostructural and belong to the orth orhombic crystal system, space group P2(1)2(1)2(1) (No. 19). Compound I: a = 11.654 (1) Angstrom, b = 12.968(2) Angstrom, c = 16.273(2) Angs trom, Z= 4. Compound II: a b = 12.948(2) Angstrom, c = 16.285(1) Angst rom, Z = 4. The two polymorphs III-alpha and III-beta crystallize in t he monoclinic system. Compound III-alpha: a = 11.815(2) Angstrom, b = 21.769(3) Angstrom, c = 14.498(4) Angstrom, beta = 95.43(2)degrees, Z = 4, space group P2(1)/c (No. 14). Compound III-beta: a = 22.154(3) An gstrom, b = 11.550(2) Angstrom, c = 14.230(2) Angstrom, beta = 99.05(1 )degrees, Z = 4, space group P2(1)/a (No. 14). All four are Zintl comp ounds containing novel one-dimensional polymeric chains of (1)(infinit y)[(In2Te6)(2-)] that can be described as alternating fused five-membe red rings [(In3+)(2)(Te2(2-))(Te2-)], joined at the In atoms.