Infrared Studies of Aragonite, Calcite, and Vaterite Type Structures in the Borates, Carbonates, and Nitrates

Infrared absorption spectra have been obtained on the alkali nitrates, the divalent metal carbonates, and the rare earth borates which assume the aragonite, calcite, or vaterite crystal structures. It was observed that similar structures give rise to analogous spectra except for the carbonate and bo...

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Detalles Bibliográficos
Autores principales: Weir, C. E., Lippincott, Ellis R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1961
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5287277/
https://www.ncbi.nlm.nih.gov/pubmed/32196235
http://dx.doi.org/10.6028/jres.065A.021
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author Weir, C. E.
Lippincott, Ellis R.
author_facet Weir, C. E.
Lippincott, Ellis R.
author_sort Weir, C. E.
collection PubMed
description Infrared absorption spectra have been obtained on the alkali nitrates, the divalent metal carbonates, and the rare earth borates which assume the aragonite, calcite, or vaterite crystal structures. It was observed that similar structures give rise to analogous spectra except for the carbonate and borates having the vaterite structure. The marked differences observed in these latter spectra are discussed. Frequency shifts produced by cation substitution are ascribed to repulsion between closed electron shells of oxygen atoms. It is concluded that this repulsive force determines the structure type in the rare earth borates.
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spelling pubmed-52872772020-03-18 Infrared Studies of Aragonite, Calcite, and Vaterite Type Structures in the Borates, Carbonates, and Nitrates Weir, C. E. Lippincott, Ellis R. J Res Natl Bur Stand A Phys Chem Article Infrared absorption spectra have been obtained on the alkali nitrates, the divalent metal carbonates, and the rare earth borates which assume the aragonite, calcite, or vaterite crystal structures. It was observed that similar structures give rise to analogous spectra except for the carbonate and borates having the vaterite structure. The marked differences observed in these latter spectra are discussed. Frequency shifts produced by cation substitution are ascribed to repulsion between closed electron shells of oxygen atoms. It is concluded that this repulsive force determines the structure type in the rare earth borates. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1961 1961-06-01 /pmc/articles/PMC5287277/ /pubmed/32196235 http://dx.doi.org/10.6028/jres.065A.021 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Bureau of Standards Section A is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Weir, C. E.
Lippincott, Ellis R.
Infrared Studies of Aragonite, Calcite, and Vaterite Type Structures in the Borates, Carbonates, and Nitrates
title Infrared Studies of Aragonite, Calcite, and Vaterite Type Structures in the Borates, Carbonates, and Nitrates
title_full Infrared Studies of Aragonite, Calcite, and Vaterite Type Structures in the Borates, Carbonates, and Nitrates
title_fullStr Infrared Studies of Aragonite, Calcite, and Vaterite Type Structures in the Borates, Carbonates, and Nitrates
title_full_unstemmed Infrared Studies of Aragonite, Calcite, and Vaterite Type Structures in the Borates, Carbonates, and Nitrates
title_short Infrared Studies of Aragonite, Calcite, and Vaterite Type Structures in the Borates, Carbonates, and Nitrates
title_sort infrared studies of aragonite, calcite, and vaterite type structures in the borates, carbonates, and nitrates
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5287277/
https://www.ncbi.nlm.nih.gov/pubmed/32196235
http://dx.doi.org/10.6028/jres.065A.021
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