Browsing Division of Chemical Sciences by Title
Now showing items 743-762 of 1480
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Organocatalytic Cascade Cyclizations for the Enantioselective Synthesis of Spirooxindoles
(2018-06-18)The thesis entitled “Organocatalytic Cascade Cyclizations for the Enantioselective Synthesis of Spirooxindoles” is divided into three chapters. Chapter 1: Catalytic Enantioselective Michael Addition/Cyclization Cascade ... -
Organosulfur Reactions In Organic Synthesis With Tetrathiomolybdate
(Indian Institute of Science, 2005-04-27)Recent years have seen a dramatic expansion in synthetic and structural molybdenum - sulfur chemistry. The amplest binary Mo-S moiety in MO$ ion. The thromolybdates derived by sulfur substitution from the 0x0 analogue have ... -
Overcoming Challenges Associated with Designing of Thermoelectric Materials: DFT and Machine Learning Approaches
Search for clean and renewable energy resources has driven recent interest in designing thermoelectric materials that convert the waste heat to useful electricity. High performance thermoelectric materials require excellent ... -
Overcoming Challenges Associated with Hydrogen Storage Efficiency and Fuel Cell Catalysis : An Ab Initio Study
Fuel cells offer the best solution to the imminent energy and environmental crisis staring at our face, urging the scientific community to overcome all the challenges faced by its effective commercialization. These harness ... -
Oxidation of CO Catalysed by Nanometric Mono and Bi-Noble Metals on Various Oxide Supports
Air pollution results mainly from the injurious smoke emitted by cars, buses, trucks, factories etc. This smoke contains carbon monoxide, unburned hydrocarbons and oxides of nitrogen and sulphur. In case of cars, catalytic ... -
Oxidation of thioketones by singlet oxygen
The thesis entitled “Oxidations of Thioketones and Thioketenes by Singlet Oxygen” consists of 9 chapters. The first two chapters are a general introduction to the work presented in the thesis, and Chapter 6 is a brief ... -
Oxidation reduction studies in non-aqeous media
This thesis embodies the results of the investigations on the oxidation-reduction behaviour of two typical redox couples in non~aqueous media. The redox systems chosen for the studies are (i) Copper(II) - Copper(l) ... -
Oxygen Reduction Reaction on Copper Oxide Electrodes Doped with First-Row Transition Metals
The oxygen reduction reaction (ORR) is critical in electrochemical applications such as fuel cells, metal-air batteries, and industrial processes like chlor-alkali and H2O2 synthesis. Its universality lies in the fact that ... -
Palladium and Nickel Chalcogenides as Electrocatalysts
(2017-12-02)In recent years, there has been an increasing interest on renewable energy sources as substitute to fossil fuels. Among various processes of energy generation, electrochemical methods such as storage and conversion systems, ... -
Palladium Catalyzed Refunctionalizations of Olefins : Novel Strategies for Construction of C-C, C-Hetero Bonds and Homogeneous Hydrogenation
(2018-07-18)Chapter 1: Metal carbenoids in organic synthesis The chapter describes the phenomena of metal carbenoid insertion reactions in two parts: Part A, and Part B. The study of N-tosylhydrazones as diazo precursor was commenced ... -
Palladium complexes of P,P-, P,N- and P,S- donor ligands based on the P-N-P motif
The diphosphazane ligands of the type Ph?P(E)N(R)P(E?)Ph? (1–5) exhibit diverse palladium–allyl chemistry, including various fluxional processes in solution. The symmetrical ligands Ph?PN(CHMe?)PPh? (1) and Ph?P(S)N(CHMe?)P(S)Ph? ... -
Path Integral Approach to Levy Flights and Hindered Rotations
(2018-04-12)Path integral approaches have been widely used for long in both quantum mechanics as well as statistical mechanics. In addition to being a tool for obtaining the probability distributions of interest(wave functions in the ... -
pathways in aromatic oxidation mechanistic on the reactions of aromatic substrate with periodic acid
The thesis entitled "Pathways in Aromatic Oxidation – Mechanistic Studies on the Reactions of Aromatic Substrates with Periodic Acid" is divided into six chapters. The first chapter discusses the mechanisms of oxidation ... -
Perovskite phase formation in the relaxor ferroelectric system Pb(Fe1/2Nb1/2)O3-Pb(Zn1/3Nb2/3)O3 - BaTiO3 : their dielectric and thermal expansion studies
In the binary system of PFN-PZN, prepared by different methods, the samples prepared by the B-site oxides mixing route showed high dielectric constant (K_max and K_loss), but also marginally high dielectric loss compared ... -
Perovskite Related Oxides: Development Of New Synthetic Methods, Materials And Properties
(2007-10-06)Oxides of ABO3 composition (A = alkali, alkaline earth or rare earth metal in general, B = transition metal) constitute a large family of metal oxides of current interest to solid state and materials chemistry. Among the ... -
Phase Behaviour in Crystalline Solids : Exploring the Structure Guiding Factors Via Polymorphism, Phase Transitions and Charge Density Studies
(2018-04-11)The thesis entitled "Phase Behaviour in Crystalline Solids: Exploring the Structure Guiding Factors via Polymorphism, Phase Transitions and Charge Density Studies" consists of five chapters divided into two parts. A basic ... -
Phase Modulated Selective NMR Methods for resolving overlapping spin systems and rapid data acquisition : Application in metabolomics
research work is focused on the development of new fast solution NMR methods for resolving overlapping spin systems and their application to NMR based metabolomics. In this work two new solution NMR pulse sequences are ...