Global ETD Search

31	The association of trimethylacetic acid in carbon tetrachloride Chiang, Teh-Ching. January 1965 (has links) Call number: LD2668 .T4 1965 C532 / Master of Science Hydrogen bonding. Masters theses
32	Spectroscopic studies of solvation : Part 1, Solvation of thiols; Part 2, Hydration of deoxyribonucleic acid Archer, Geoffrey Philip January 1989 (has links) The extent of hydrogen bonding in ethanethiol is determined using a correlation between the chemical shift of the sulphydryl proton and the stretching frequencies of the component bands of the vS-H infrared band The component bands having stretching frequencies at 2585 cm-1 and 2570 cm-1 for non hydrogen bonded and mono-hydrogen bonded thiol groups respectively. It is calculated that the pure liquid at 22°C. contains ca. 49% free SH bonds. A dimerisation constant of 0.038 dm3 mol-1 is estimated at 22°C. 2-Hydroxyethanethiol is used to investigate the strength of hydrogen bonding to the thiol group in aqueous solutions. The results of the IR and NIR studies are consistent with the formation of hydrogen bonds of S-H O type between thiol and water molecules. Salt and solvent effects upon the phosphate and thiophosphate groups of Sodium Dimethyphosphate (NaDMP) and Sodium Dimethylthiophosphate (NaDMSP) are investigated. Infrared spectra in the and v3P-O of DMP and DMSP suggest that the order of strength of binding of metal ion to phosphate/thiophosphate group is Na+ < Mg2+ < Ca2f. The results indicate that solvent-separated ion pairs dominate in aqueous solutions, whereas, mono- and bi-dentate contact ion pairs are favoured in DMSO and methanol solutions. The thiophosphate group is solvated by methanol and water, primarily at the oxygen site. No evidence was found to support hydrogen bond formation to the anionic sulphur site. Infrared spectra were also consistent with Mg2+ and Ca2+ interacting with the Oxygen atom, but not the Sulphur atom. DNA hydration is investigated using high field NMR spectrometry. Frozen aqueous DNA solutions were found to have a broad NMR signal due to hydration water. From this signal it is estimated that, at -12°C., the DNA samples are hydrated by ca. 25 water molecules per base pair of DNA. 541 Hydrogen bonding roles
33	Investigation of metal-metal bonding interactions of initially excitedstate associated with d * p transitions in Pt2(P2O5H2)44-, M2(dcpm)2(M=Au,Ag,Cu) and M2(dmpm)3 (M=Au,Cu) (dcpm=bis(dicyclohexylphosphine)methane) inorganic complexes 梁景雄, Leung, King-hung, Daniel. January 2000 (has links) published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy Metal bonding. Raman spectroscopy.
34	Microwave spectroscopy of CHâ†3HgX (X = Cl, CN) and SiFâ†3X (X = Cl, I) and the internal rotors CFâ†3SH, CHâ†3B(OH)â†2 Rego, Christopher Ashok January 1989 (has links) No description available. 541 Molecular bonding/structure
35	The transport properties of small molecules : the effects of their shape and environment Messaritaki, Antigoni January 2003 (has links) No description available. 541 Hydrogen bonding
36	Modelling and assessment of diffusion bonding Hill, A. D. January 1984 (has links) No description available. 669 Metallic bonding
37	Laser assisted vascular anastomosis Vance, C. A. January 1988 (has links) No description available. 610 Laser bonding of arteries
38	Formation of supramolecular structures in aqueous solution and their interactions with surfaces Saulzet, Sylvie Isabelle January 1999 (has links) No description available. 541 Hydrogen bonding; Polymers
39	Computational analysis of intramolecular interactions in proteins McDonald, Ian Kevin January 1996 (has links) No description available. 572 Hydrogen bonding; Crystallography
40	Preparation and charecterisation of novel complexes of various mono- and di-acetylenes with transition metals Macindoe, L. A. January 1988 (has links) No description available. 547 Organometallic complex bonding

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