The crystal structure of hexaammonium diacetyl-octa-molybdate tetrahydrate by Zicheng Xiao, Yongge Wei, Lin Xu, and Yuan Wang

Crystal Research and Technology

Cryst. Res. Technol. 41, 595 (2006) - Abstract -

The crystal structure of hexaammonium diacetyl-octa-molybdate tetrahydrate

Zicheng Xiao, Yongge Wei, Lin Xu*, and Yuan Wang

State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Physical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
*Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China

Keywords	diacetyl-octamolybdate(VI), polyoxometalates, crystal structure
PACS	61.66.Hq
DOI	10.1002/crat.200510631

The crystal structure of hexaammonium diacetyl-octa-molybdate tetrahydrate, (NH₄)₄₂[Mo₁₃₂O₃₇₂ (CH₃COO)₃₀(H₂O)₇₂] is documented. The crystals are triclinic, space group P-1, with a=8.1018(16) Å, b=10.334(2) Å, c=12.238(2) Å, α=68.20(3)°, β=74.98(3)°, γ=67.25(3)°, V=869.3(3) Å³, Z=1. The structure was solved by direct methods and refined by least squares methods to a Final R1 = 0.0374 and wR2 = 0.1074 for 3805 observed reflections with I > 2σ(I). The structure contains ammonium cations and isolated acetyl octamolybdate(6-) anions, [Mo₈O₂₈(CH₃CO)₂]^6-. The crystallographic data of the structure was deposited with the Cambridge Data Center as No. CCDC 249565.

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