HYDROGEN BONDING IN IKAITE, CACO3.6H2O

dc.contributor.author	Swainson I.P.
dc.contributor.author	Hammond R.P.
dc.date.accessioned	2021-11-28T04:25:38Z
dc.date.available	2021-11-28T04:25:38Z
dc.date.issued	2003
dc.identifier	https://www.elibrary.ru/item.asp?id=14256569
dc.identifier.citation	Mineralogical Magazine, 2003, 67, 3, 555-562
dc.identifier.issn	0026-461X
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/32572
dc.description.abstract	Ikaite is a metastable hexahydrate of calcium carbonate, forming in aqueous conditions near freezing conditions. Neutron powder diffraction data of synthetic deuterated ikaite, collected at seven temperatures from 4 to 270 K, were refined. The linear thermal expansion coefficients are quite anisotropic, being smaller in the direction of the C-O bond. A review of the hydrogen-bonding scheme around the (CaCO03) ion pair is given and an additional weak potential hydrogen bond is suggested. Temperature-dependent growth of the atomic displacement factors of the carbonate O1 atom agrees with the previous suggestion of a possible low-frequency, hindered librational mode of the carbonate group.
dc.subject	Ikaite
dc.title	HYDROGEN BONDING IN IKAITE, CACO3.6H2O
dc.type	Статья

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