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pH-Dependent soluti...
pH-Dependent solution dynamics of a manganese(II)polyoxometalate, [Mn-4(H2O)(2)(P2W15O56)(2)](16-), and [Mn(H2O)(6)](2+)
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Sharma, Rupali (författare)
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Zhang, Jie (författare)
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Ohlin, C. Andre (författare)
- 2015
- 2015
- Engelska.
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Ingår i: Dalton Transactions. - : Royal Society of Chemistry (RSC). - 1477-9226 .- 1477-9234. ; 44:44, s. 19068-19071
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The aqueous reaction dynamics of the manganese(II)-functionalised Wells-Dawson polyoxometalate [Mn-4(H2O)(2)(P2W15O56)(2)](16-) has been determined as a function of pH using variable temperature O-17 NMR, and compared with that of the well-studied monomeric manganese(II) hexa-aqua ion, [Mn(H2O)(6)](2+). While the rate of aquo-ligand exchange on the hexa-aqua ion remains independent of pH in the range 3.2-6.0, the rate of water exchange of the polyoxometalate ion varies by a factor of fifteen, from 1.98 x 10(7) s(-1) at pH 3.2 to 1.3 x 10(6) s(-1) at pH 6.0. This decrease in the rate of exchange correlates with the deprotonation of the polyoxometalate framework.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
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- art (ämneskategori)
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