Tungsten(VI) and mixed tungsten, molybdenum(VI) complexes of tartaric acid
β Scribed by Ana M. V. Cavaleiro; Julio D. Pedrosa de Jesus; Robert D. Gillard; Peter A. Williams
- Publisher
- Springer
- Year
- 1984
- Tongue
- English
- Weight
- 201 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0340-4285
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## Abstract WF~6~ reacts with phosphines R~3~P forming 1:1 compounds. With R=P(CH~3~)~3~ the coordination around the tungsten atom is capped trigonal prismatic, with R=P(CH~3~)~2~C~6~H~5~ the coordination is capped octahedral, as established by singleβcrystal structure determinations: [(CH~3~)~3~Pο£Ώ
A multinuclear 1D and 2D NMR study of D-galacturonic and D-glucuronic acids in aqueous solution and their complexation with tungstate and molybdate ions tor variable concentration and pH conditions has been undertaken. The acids exist mainly in the pyranose forms, but complexes were detected involvi