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ENDOR studies of hydrogen bonding of the AsO44- centre in x-ray irradiated KH2AsO4

Dalal, NS and McDowell, CA and Srinivasan, R (1969) ENDOR studies of hydrogen bonding of the AsO44- centre in x-ray irradiated KH2AsO4. In: CHEMICAL PHYSICS LETTERS, 4 (2). pp. 97-100.

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Official URL: http://dx.doi.org/10.1016/0009-2614(69)85079-7


We here report what we believe to be an important method for studying hydrogen bonding in systems containing a paramagnetic centre. The technique of electron-nuclear double resonance ( ENDOR) has been applied to study the hydrogen-bond network around the AsO44-. centre in X-ray irradiated KH2AsO4. ENDOR transitions from several sets of hydrogen nuclei surrounding the centre were observed at 4.2 degrees K and the spectra for two sets of neighbouring nuclei are identified. The angular dependences for these spectra are fitted with a spin-Hamiltonian to obtain the isotropic and anisotropic magnetic hyperfine constants. The results are discussed in terms of the available spectroscopic and crystallographic data on KH2AsO4 and the order-disorder model of ferroelectrictricity in this class of crystals.

Item Type: Journal Article
Publisher: Elsevier
Additional Information: Copyright for this article belongs to Elsevier.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 06 Feb 2014 07:40
Last Modified: 06 Feb 2014 07:40
URI: http://eprints.iisc.ac.in/id/eprint/48297

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