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AQUEOUS MOLYBDOTUNGSTATES

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UNSPECIFIED (1994) AQUEOUS MOLYBDOTUNGSTATES. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS (7). pp. 1061-1066.

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Abstract

Molybdenum(VI) has been shown by W-183 NMR spectroscopy to replace W(VI) in the three main types of aqueous polytungstate anion. In ions with the paratungstate-A structure, [W7O24]6- it can replace any or all of the tungstens, so that at least 19 mixed-metal species can be observed, and mostly also identified. Their relative stability constants can also be approximately determined using the LAKE program. The proportions of these species can be semiquantitatively explained by a simple site-preference model, and their chemical shifts are largely governed by the overall extent of substitution. In contrast, only a single molybdenum substitution was observed in alpha-metatungstate, alpha-[H2W12O40]6-, and also in paratungstate-B, [H2W12O42]10- at the site furthest from the centre of the anion.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Journal or Publication Title: JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
Publisher: ROYAL SOC CHEMISTRY
ISSN: 0300-9246
Official Date: 7 April 1994
Dates:
DateEvent
7 April 1994UNSPECIFIED
Number: 7
Number of Pages: 6
Page Range: pp. 1061-1066
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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