Accession Number : AD0643438

Title :   MOLECULAR INTERACTIONS OF WATER IN BIOLOGICAL SYSTEMS.

Descriptive Note : Final rept.,

Corporate Author : UNION CARBIDE CORP TONAWANDA N Y LINDE DIV

Personal Author(s) : Doebbler,G. F.

Report Date : 01 NOV 1966

Pagination or Media Count : 32

Abstract : The study is concerned with the molecular interactions of water in systems of biological interest as examined by techniques of thermal neutron inelastic scattering spectroscopy (NIS). Spectra were determined for water and solutions of the inert anesthetic gases, xenon, nitrous oxide and ethylene. Spectra were also determined for solutions of xenon at 1C and increased pressures and xenon hydrate (Xe 5.75 H2O) and compared with spectra for water, ice and other known hydrates. Differences were observed between the spectra of xenon hydrate and ice but NIS was relatively insensitive to long range crystallographic order differences in these extensively hydrogen bonded structures. Small changes in the NIS spectrum of water are induced by inert gases. With xenon these changes are enhanced at reduced temperature and increased pressure. Definitive interpretation of the spectral changes cannot be made since it appears that associated units in liquid water are highly variable with regard to size, structure or structural perfection and give rise to broad dispersions of lattice frequencies which obscure structural details. (Author)

Descriptors :   (*WATER, MOLECULAR STRUCTURE), (*NEUTRON SCATTERING, WATER), INELASTIC SCATTERING, RARE GASES, XENON, HYDRATES, ICE, NUCLEAR RADIATION SPECTROSCOPY, NITROGEN COMPOUNDS, OXIDES, ALKENES, MOLECULAR ASSOCIATION

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE