Intracage reactions in sodalites

Mark T. Weller, Gordon Wong, Cathy L. Adamson, Simon M. Dodd, James J. B. Roe

Research output: Contribution to journalArticle

Abstract

Sodalites containing thiocyanate [Na(AlSiO) (SCN)·xHO] and nitrite [Na (AlSiO)(NO)· xHO] have been synthesised by precipitation from aluminosilicate solutions at low temperature. Cation-exchange reactions in aqueous solution were undertaken on the thiocyanate material to afford the fully substituted silver and lithium analogues. The mild and low-temperature conditions under which cation exchange occurs contrast markedly with similar, previously described reactions on this family of compounds involving melts and direct reaction between solids at 300-800 °C. These compounds undergo slow intracage oxidation reactions of the anions on heating in air to yield sodalites containing OCN,S, and SO from SCN and NO from NO . The extent and direction of these oxidation reactions depends upon the nature of the cation also present in the cage. The products of these indirect syntheses have been characterised by power X-ray and neutron diffraction, i.r. and u.v.-visible spectroscopy, and thermogravimetric analysis.
LanguageEnglish
Pages593-597
JournalJournal of the Chemical Society: Dalton Transactions
Volume1990
Issue number2
DOIs
StatusPublished - 1990

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Cations
Oxidation
Neutron diffraction
Nitrites
Lithium
Silver
Anions
Thermogravimetric analysis
Ion exchange
Spectroscopy
Heating
X ray diffraction
Temperature
Air
thiocyanate
Direction compound
aluminosilicate

Cite this

Weller, M. T., Wong, G., Adamson, C. L., Dodd, S. M., & Roe, J. J. B. (1990). Intracage reactions in sodalites. Journal of the Chemical Society: Dalton Transactions, 1990(2), 593-597. DOI: 10.1039/DT9900000593

Intracage reactions in sodalites. / Weller, Mark T.; Wong, Gordon; Adamson, Cathy L.; Dodd, Simon M.; Roe, James J. B.

In: Journal of the Chemical Society: Dalton Transactions, Vol. 1990, No. 2, 1990, p. 593-597.

Research output: Contribution to journalArticle

Weller, MT, Wong, G, Adamson, CL, Dodd, SM & Roe, JJB 1990, 'Intracage reactions in sodalites' Journal of the Chemical Society: Dalton Transactions, vol 1990, no. 2, pp. 593-597. DOI: 10.1039/DT9900000593
Weller MT, Wong G, Adamson CL, Dodd SM, Roe JJB. Intracage reactions in sodalites. Journal of the Chemical Society: Dalton Transactions. 1990;1990(2):593-597. Available from, DOI: 10.1039/DT9900000593
Weller, Mark T. ; Wong, Gordon ; Adamson, Cathy L. ; Dodd, Simon M. ; Roe, James J. B./ Intracage reactions in sodalites. In: Journal of the Chemical Society: Dalton Transactions. 1990 ; Vol. 1990, No. 2. pp. 593-597
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N2 - Sodalites containing thiocyanate [Na(AlSiO) (SCN)·xHO] and nitrite [Na (AlSiO)(NO)· xHO] have been synthesised by precipitation from aluminosilicate solutions at low temperature. Cation-exchange reactions in aqueous solution were undertaken on the thiocyanate material to afford the fully substituted silver and lithium analogues. The mild and low-temperature conditions under which cation exchange occurs contrast markedly with similar, previously described reactions on this family of compounds involving melts and direct reaction between solids at 300-800 °C. These compounds undergo slow intracage oxidation reactions of the anions on heating in air to yield sodalites containing OCN,S, and SO from SCN and NO from NO . The extent and direction of these oxidation reactions depends upon the nature of the cation also present in the cage. The products of these indirect syntheses have been characterised by power X-ray and neutron diffraction, i.r. and u.v.-visible spectroscopy, and thermogravimetric analysis.

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