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Reaction and EPR spectra of "MCl4.2PR3" (M=V, Nb, Ta) compounds and study of some amidato-bridged dirhenium compounds
(1994)
The reaction solution of triethylphosphine with MCl4 (M = V, Nb, Ta) has been reported to show electron paramagnetic resonance signals at both room temperature and low temperature. The axial behavior of the low temperature ...
Organometallic chemistry in unusual media : water and supercritical carbon dioxide as solvents for organometallic chemistry
(1994)
A series of water soluble transition metal complexes, utilizing the water soluble phosphine 1,3,5,-triaza-7-phosphaadamantane (PTA), were synthesized and studied. The water-soluble phosphine complex of Rh(I), (Rh(PTAH)(P ...
Surface modification of preformed polymeric materials : direct functionalization of reactive polymer surfaces
(1994)
Surface modifications of several reactive preformed polymeric materials, such as poly(methyl methacrylate) (PMMA), poly(ethylene terephthalate) (PET) and poly(vinyl chloride) (PVC) are described. Those modifications are ...
Studies on vitamin B12 biosynthesis and on 2,3-Oxidosqualene cyclase
(1994)
Vitamin B 12, the antipemicious anemia factor, is known to be the most complex nonpolymeric natural product derived from uroporphyrinogen III. Its coenzyme is the tetrapyrrolic cofactor involved in over 20 enzymatic ...
Ion detection and structural mass spectrometry by Fourier transform ion cyclotron resonance mass spectrometry and matrix assisted laser desorption ionization
(1994)
The work presented in this thesis focuses on detection and structural mass spectrometry of large biomolecules by MALDI-FTICR. In Chapter I, overviews of the MALDI technique and advantages of FTICR are given. In Chapter II, ...
Study of the solution properties of octahedral metal-halide clusters of early transition metals : electronic spectroscopy and cluster excision in zirconium halide cluster phases
(1994)
This dissertation presents the excision of Zr-based clusters from cluster-containing extended phases. The details of the methods for cluster excision we have developed are presented and possible future directions outlined. ...
Correlation effects and resonances in molecular photoionization
(1994)
The photoionization cross sections of CS$sb2$ leading to the $Xsp2Pisb{g}$, $Asp2Pisb{u}$, and $Bsp2Sigmasb{u}sp+$, and $Csp2Sigmasb{g}sp+$ states of CS$sb2sp+$ have been computed in the multichannel frozen core Hartree-Fock ...
Mechanistic studies on isopenicillin N synthase
(1994)
Several plasmids containing the isopenicillin N synthase gene were constructed and introduced into different expression systems that yielded large quantities of protein, mostly as inclusion bodies. Procedures to obtain ...
IR laser induced photodesorption of small alcohols (C1-C4) on silver (111)
(1994)
Infrared laser induced photodesorption of small alcohols (C1-C4) on Ag (111) was studied using C-H excitation (2800-3000cm^-1) and O-H excitation (3100-3500cm^-1). The photodesorption yield (PDY) depended on a number of ...