Search for dissertations about: "Transition metals"

Showing result 21 - 25 of 229 swedish dissertations containing the words Transition metals.

  2. 21. Transition metal-catalyzed allylic and vinylic functionalization : Method development and mechanistic investigations

    Author : Johanna M. Larsson; Kálmán J. Szabó; Dennis G. Hall; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; palladium; copper; catalysis; Heck reaction; C-H functionalization; allylic substitution; silylation; borylation; trifluoromethylation; fluorination; mechanistic study; transition metal; alkene; allylic silane; allylic boronate; allylic fluoride; organisk kemi; Organic Chemistry;

    Abstract : The use of small molecule building blocks in, for example, pharmaceutical research and new material development, creates a need for new and improved organic synthesis methods. The use of transition metals as mediators and catalysts opens up new reaction pathways that have made the synthesis of completely new compounds possible as well as greatly improved the synthetic routes to known compounds. READ MORE

  4. 22. Carbenes: The Gathering : Photophysics of Transition Metal Carbene Complexes

    Author : Nidhi Kaul; Leif Hammarström; James K. McCusker; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; photophysics; time-resolved spectroscopy; transition-metal complexes; Kemi med inriktning mot kemisk fysik; Chemistry with specialization in Chemical Physics;

    Abstract : This thesis explores the photophysics of some transition-metal complexes (TMCs) which utilize N-heterocyclic carbenes as ligands. After a historical interlude which traces the development of the broader field of transition metal complexes and their photophysical investigations, there is an overview of theoretical concepts and the spectroscopic methods employed. READ MORE

  5. 23. Thermodynamic investigations of transition metal systems containing coabon and nitrogen

    Author : Lidong Teng; Seshadri Seetharaman; Tooru Matsumiya; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; thermodynamic activity; galvanic cell technique; transition metal carbides; transition metal nitrides; phase equilibrium; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Abstract : In view of the important applications of carbides and carbo-nitrides of transition metals in the heat-resistant and hard materials industries, the thermodynamic activities of Cr and Mn in the Cr-C, Fe-Cr-C, Mn-Ni-C and Mn-Ni-C-N systems have been studied in the present work by the use of the galvanic cell technique. CaF2single crystals were used as the solid electrolyte. READ MORE

  6. 24. On the nucleation and solidification of silicon and refractory materials

    Author : Lena Magnusson; KTH; []
    Keywords : Solidification; Nucleation; Interstitials; Vacancies; Undercooling; Silicon; Refractory metals; Non-transition metals; Surface energy; Interface energy; Latent heat; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : .... READ MORE

  7. 25. Metal-metal bond between transition and main-group metals : heterobimetallic platinum-thallium cyanide compounds

    Author : Mikhail Maliarik; KTH; []
    Keywords : ;

    Abstract : .... READ MORE