title: Hydrothermal Synthesis and Characterization of a Novel Two-Dimensional Tellurite of Molybdenum(VI), (NH(4))(6)Mo(8)Te(8)O(43).H(2)O.
abstract: A novel, two-dimensional tellurite of molybdenum(VI), (NH(4))(6)Mo(8)Te(8)O(43).H(2)O, has been isolated as single crystals in a hydrothermal reaction and characterized by single-crystal X-ray diffraction, infrared spectroscopy, and thermal analysis. Pertinent crystal data are as follows: trigonal space group P&thremacr;, a = 12.124(4) Å, c = 8.130(3) Å, Z = 1. Its strucrure consists of (Mo(8)Te(8)O(43))(6)(-) layers interleaved with ammonium ions. The novel feature of the anionic layer is that it contains two anions, discrete [Mo(2)O(7)](2)(-) anions residing in an extended framework of (Mo(6)Te(8)O(36))(4)(-) anions made by corner connection of edge-shared bi-octahedral Mo(2)O(10) units, TeO(3) pyramids, and TeO(4) units with SF(4) geometry. Its decomposition temperature is 371 degrees C.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India.
authors.forename: Vidyavathy
authors.initials: V
authors.lastname: Vidyavathy Balraj
authors.forename: K.
authors.initials: K
authors.lastname: Vidyasagar