Division of Chemical Sciences: Recent submissions
Now showing items 281-300 of 1541
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Electron spectroscopic investigations of nitrogen adsorbed on transition metal surfaces and of oxide superconductors.
1.4 Conclusions The core and valence level binding energies and vibrational stretching frequencies of nitrogen adsorbed on clean as well as modified transition?metal surfaces are summarized in Tables I.1–I.3. From Table ... -
Studies on the vapour-phases oxidation of somealcohols in a fixed, bed reactor
Mechanism of the vapour?phase oxidation of alcohols over ferric molybdate catalyst was investigated in a fixed?bed isothermal differential flow reactor. Ring?substituted 1?phenylethanols were used as the organic substrates ... -
Synthetic investigations in steroids: a new approach to the total synthesis of estrone and its analogues.
The object of the present investigation is to develop a new strategy for the synthesis of aromatic steroids and their analogues. The thesis entitled “SYNTHETIC INVESTIGATIONS IN STEROIDS: A NEW APPROACH TO THE TOTAL SYNTHESIS ... -
Binding of 9-N-butyladenine with carboxylic acids : Studies on the watson-crick vs. Hoogsteen selectivity
It’s been shown that if the carboxylic group of the acid is in resonance with the adjacent R group, a net preference for the HG site is observed. If the resonance is disrupted in case of aromatic acids by tilting the plane ... -
Factors influencing the chemical shift a case study with a, a,-DI-tert butylthioaceric esters
The assignment of structures to two forms of ?,? di tert butylthioacetic esters, detected by NMR, is the subject matter of this thesis entitled “Factors Influencing the Chemical Shift - A Case Study with ?,? Di tert ... -
Chemistry of hydrazine derivatives
The chemistry of hydrazine and its derivatives is of interest because of their use as rocket fuel, solid propellant oxidizers, explosives, antioxidants, insecticides, food preservatives, pharmaceuticals and materials for ... -
Kinetic studies on the interactions of gold (iii) with nucleic acids
The effects of the univalent ions like Li?, Na?, K?, Cs?, etc. and their counter ions on the CD spectra of various DNA samples have been investigated in some detail. With the increase in the concentration of the univalent ... -
Contributions to the chemistry of thiophosphoryl fluoride
The present status of knowledge about the chemistry of thiophosphoryl fluoride has been reviewed in the introductory chapter. Taking this background into consideration, a line of investigation has been undertaken which is ... -
Thermal studies on substituted ammonium and phosphonium perchlorates
The investigations described in this thesis have been aimed at contributing to the understanding of the thermal decomposition characteristics of some of the substituted ammonium and phosphonium perchlorates. The importance ... -
Electron diffraction studies of electro-deposits
The work described in this thesis has been directed towards the design and fabrication of an electron diffraction camera, and its use to study the dependence of the structure of electrodeposits upon electrochemical conditions ... -
Heterolytic Activation of the H-X (X=H,Si,B, and C) Bonds inSmall Molecules
The protonation reaction of trans-[Ru(H)(P(OMe)?)(dppe)?][OTf] 2.2 with HOTf led to the formation of 3 new dihydrogen complexes trans-[Ru(?²?H?)(P(OMe)???(OH)?)(dppe)?] (x = 0, 1, 2) which are characterized by their short ... -
Heterolytic activation of molecular hydrogen by transition metal complexes
New iron hydride complexes of the type trans-[(dppe)?Fe(H)(RCN)][BF?] (RCN = nitrile) with varying degree of ?-accepting ability of the nitrile moiety have been prepared and characterized. The protonation reactions of these ... -
Analysis and extraction of molecular hyperpolarizability from on and off resonance hyper-Rayleigh scattering measurements in solution : Ferrocenyl donor-organic acceptor and -(P=N)- linkage based donor acceptor molecules as case studies
Knowledge of accurate second?order nonlinearity or first hyperpolarizability (?) of organic and organometallic molecules is important in a variety of applications. The second?order response from a molecule in solution is ... -
Dynamics of I*(2p1/2) production in the UV photodissociationof alkyl iodides
The photodissociation dynamics of alkyl iodides in their A?band of absorption (arising from n ? ?* transition) has been of interest for dynamicists for the past three decades, starting from the pioneering work of Kasper ... -
Studies in the electro deposition of manganese
The investigations described in the thesis have been directed towards an understanding of the mechanism of electrodeposition of manganese from manganese sulphate–ammonium sulphate solutions and towards an elucidation of ...