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New Type of Polymeric Indium Tellurides: Low-Temperature Synthesis and Structure Characterization of [M(en) 3 ]In 2 Te 6 (M = Fe, Zn) and α- and β-[Mo 3 (en) 3 (μ 2 -Te 2 ) 3 (μ 3 -Te)(μ 3 -O)]In 2 Te 6

1997; American Chemical Society; Volume: 36; Issue: 7 Linguagem: Inglês

10.1021/ic960751v

1520-510X

Jing Li, Zhen Chen, Thomas J. Emge, Davide Μ. Proserpio,

Crystal Structures and Properties

Crystal growth of metal tellurides and tellurometalates employing solvothermal reactions at temperatures below 200 °C have resulted in four new indium tellurium phases, [Fe(en)3](In2Te6) (I), [Zn(en)3](In2Te6) (II), and α- and β-[Mo3(en)3(μ2-Te2)3(μ3-Te)(μ3-O)]In2Te6 (III-α and III-β). Single crystal X-ray diffraction analyses show that I and II are isostructural and belong to the orthorhombic crystal system, space group P212121 (No. 19). Compound I: a = 11.654 (1) Å, b = 12.968(2) Å, c = 16.273(2) Å, Z = 4. Compound II: a = 11.662(2) Å, b = 12.948(2) Å, c = 16.285(1) Å, Z = 4. The two polymorphs III-α and III-β crystallize in the monoclinic system. Compound III-α: a = 11.815(2) Å, b = 21.769(3)Å, c = 14.498(4) Å, β = 95.43(2)°, Z = 4, space group P21/c (No. 14). Compound III-β: a = 22.154(3) Å, b = 11.550(2)Å, c = 14.230(2) Å, β = 99.05(1)°, Z = 4, space group P21/a (No. 14). All four are Zintl compounds containing novel one-dimensional polymeric chains of [(In2Te6)2-] that can be described as alternating fused five-membered rings [(In3+)2(Te22-)(Te2-)], joined at the In atoms.