Synthesis and Characterization of (Ph4P)2[Ni2As4S8], (Me4N)2[Mo2O2As2S 7], and (Et4NH)2[Mo2O2As2Se 7]. New One-Dimensional Polymeric Compounds Containing Thio- And Selenoarsenate Ligands

Jun Hong Chou, Jason A. Hanko, Mercouri G. Kanatzidis

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The compounds (Ph4P)2[Ni2As4S8] (I). (Me4N)2[Mo2O2As2S 7] (II), and (Et4N)2[Mo2O2As2Se 7] (III) were synthesized by the hydrothermal reactions of NiCl2/K3AsS3/Ph4PBr, MoO3/K3AsS3/Me4NCl, and MoO3/K3AsSe3/ Et4NBr in a 1:3:4, 1:2:4, and 1:4:6 molar ratio, respectively. The (Ph4P)2[Ni2As4S8] (I) crystallizes in the triclinic space group P1̄ (No. 2) with a = 10.613(3) Å, b = 13.230(2) Å, c = 9.617(2) Å, a = 93.53(2)°, β= 96.69(2)°, γ = 71.59(2)°, V = 1272(1) Å3, and Z = 2. The one-dimensional [Ni2As4S8]n2n- consists of alternating square planar Ni2+ ions and [AS4S8]4- ligands. The (Me4N)2[Mo2O2As2S 7] (II) crystallizes in the orthorhombic space group Pbca (No. 61)with a = 18.176(4) Å, b = 17.010(2) Å, c = 16.556(7) Å, V= 5118(4) Å3, and Z = 4. The [Mo2O2As2S7]n 2n- macroanion possesses a one-dimensional chain-like structure consisting of [Mo2O2S2]2+ cores linked by [As2S5]4- ligands. The (Et4N)2[Mo2O2As2Se 2] (III) crystallizes in the orthorhombic space group Cmca No. 64) with a = 15.480(2) Å, b = 18.506(2) Å, c = 22.793(2) Å, V = 6350(1) Å3, and Z = 4. The [Mo2O2As2Se7]n 2n- is isostructural to the anion in II. The solid state optical spectra of these compounds are reported.

Original languageEnglish
Pages (from-to)4-9
Number of pages6
JournalInorganic Chemistry
Issue number1
Publication statusPublished - Dec 1 1997


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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