• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1290
  • 443
  • 167
  • 152
  • 50
  • 36
  • 35
  • 35
  • 35
  • 35
  • 35
  • 34
  • 26
  • 24
  • 19
  • Tagged with
  • 2974
  • 758
  • 469
  • 434
  • 372
  • 276
  • 247
  • 166
  • 161
  • 159
  • 151
  • 141
  • 112
  • 112
  • 111
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
171

The determination of rate constants using microelectrodes.

Mahon, Peter John, mikewood@deakin.edu.au January 1992 (has links)
An understanding of the rate and the mechanism of reaction is of fundamental importance in the many facets of chemistry. Electrochemical systems are further complicated by the heterogeneous boundary, between the solution and the electrode, that the electron passes through before any electrochemical reaction can take place. This thesis concerns the development of methods for analysing electrode kinetics. One part involves the further development of the Global Analysis procedure to include electrodes with a spherical geometry which are traditionally the most popular form of electrodes. Simulated data is analysed to ascertain the accuracy of the procedure and then the known artifacts of uncompensated solution resistance and charging current are added to the simulated data so that the effects can be observed. The experimental analysis of 2-methyl-2-nitropropane is undertaken and comparisons are made with the Marcus-Hush electrochemical theories concerning electrode kinetics. A related section explores procedures for the kinetic analysis of steady state voltammetric data obtained at microdisc electrodes. A method is proposed under the name of Normalised Steady State Voltammetry and is tested using data obtained from a Fast Quasi-Explicit Finite Difference simulation of diffusion to a microdisc electrode. In a second area of work using microelectrodes, the electrochemical behaviour of compounds of the general formula M(CO)3(η3 - P2P1) where M is either Cr, Mo or W and P2P' is bis(2-diphenylphosphinoethyl)phenylphosphine) is elucidated. The development of instrumentation and mathematical procedures relevant to the measurement and quantitation of these systems is also investigated. The tungsten compound represents the first examples where the 17-electronfac+ and mer+ isomers are of comparable stability.
172

Recent advances in the design, understanding and utilisation of free-radical homolytic substitution chemistry : a thesis presented for the degree of Doctor of Science in the Faculty of Science of the University of Adelaide / by Carl Herbert Schiesser.

Schiesser, Carl Herbert. January 1999 (has links)
Includes bibliographical references. / 381 p. ; / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / A comprehensive study into the design, understanding and utilisation of free-radical homolytic substitution chemistry / Thesis (D.Sc.)--University of Adelaide, Dept. of Chemistry, 2000?
173

Theoretical and experimental investigations of norbornyne and cyclohexyne /

Laird, Darin Wiley, January 2001 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references (leaves 266-280). Available also in a digital version from Dissertation Abstracts.
174

Addition of nucleophiles to [([eta]-diene)Co(CO)]BF complexes /

Barinelli, Lucio Salvatore, January 1988 (has links)
Thesis (Ph. D.)--University of Oklahoma, 1988. / On t.p. [eta] is represented by the Greek letter. Includes bibliographical references.
175

Nucleophilic reactions between 1-(4-oxopyridinio) phridinium cations, and some carbon, nitrogen, oxygen, and sulphur anions /

Leung, Wai-fu. January 1980 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1981.
176

The rearrangement reactions of N-Bromoacy-lanilides /

Chan, Sai-cheung. January 1959 (has links)
Thesis (M. Sc.)--University of Hong Kong, 1959. / Type-written copy. Includes bibliographical references (leaves 124-126).
177

The SN2 mechanism in aromatic nucleophilic substitution /

Wong, Ka-wing. January 1963 (has links)
Thesis (M. Sc.)--University of Hong Kong, 1964. / Typewritten.
178

The kinetics and mechanism of substitutions in octahedral cobalt complexes /

Leh, Kung-van, Francis. January 1966 (has links)
Thesis (M. Sc.)--University of Hong Kong, 1967. / Includes Octahedral cobalt(III) complexes of the chloropentammine type, by S.C. Chan and F. Leh, reprinted from Journal of the Chem ical Society, 1966. Typewritten.
179

Halogen mobility in unsaturated aliphatic SN2 reactions /

Ying, Oi-ling. January 1966 (has links)
Thesis (M. Sc.)--University of Hong Kong, 1967. / Typewritten.
180

Substitutions of some platinum (II) complexes.

Tong, Shiu-bor. January 1970 (has links)
Thesis (M. Sc.)--University of Hong Kong, 1971. / Mimeographed.

Page generated in 0.0246 seconds