SYNTHESIS AND STRUCTURE OF A NOVEL MONONUCLEAR TUNGSTEN (VI) CITRATO COMPLEX, (NH4)3[Li(H2O)3WO3(C6 H4O7)]

Autor:	Yan Xing, Ji-Qing Xu, Yong-Heng Xing, Shu-Qing Liu, Tie-Gang Wang, Ren-Zhang Wang, Yong-Hua Lin, Dongmei Li, Hengqing Jia
Rok vydání:	2001
Předmět:	Ligand chemistry.chemical_element Crystal structure Triclinic crystal system Tungsten Crystallography chemistry.chemical_compound Deprotonation chemistry Tungstate Octahedron Materials Chemistry Physical and Theoretical Chemistry Citric acid
Zdroj:	Journal of Coordination Chemistry. 53:25-33
ISSN:	1029-0389 0095-8972
DOI:	10.1080/00958970108022598
Popis:	The first mononuclear tungsten-citrato complex, (NH4)(3)[Li(H2O)(3)WO3(C6H4O7)] (1) has been prepared by the reaction of ammonium tetrathio tungstate and lithium citrate in CH3OH - H2O solution at pH 8.2. There are two crystallographically independent anions in the asymmetric crystallographic unit. The crystal structure of the title compound (triclinic, space group P (1) over bar, a = 6.901(1), b = 15.136(3), c = 16.107(3) Angstrom, alpha = 75.85(3), beta = 89.89(3), gamma = 89.97(3), V = 1631.4(6) Angstrom (3), R = 0.068, R-w = 0.1674 for 3878 reflections with I > 2 sigma (1)), reveals that in the compound a tungsten atom is coordinated to a fully deprotonated citrate as a tridentate ligand and three terminal oxygen atoms to form a distorted coordination octahedron.
Databáze:	OpenAIRE
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