Download or read book Synthesis and Characterization of 2 2 pyridil Mono and Dihydrazone and Molybdenum Metal Complexes written by Debtanu Basu and published by . This book was released on 1995 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this jOint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 40 (thesis year 1995) a total of 10,746 thesis titles from 19 Canadian and 144 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 40 reports theses submitted in 1995, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Download or read book Synthesis and Characterization of 3d Metal Complexes with the Mono N Oxides of 2 2 Bipyridine and 1 10 Phenanthroline written by Anthony Nicholas Speca and published by . This book was released on 1973 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Transition Metal Complexes of 2 2 pyridyl benzimidazole and 2 6 bis benzimidazolyl pyridine written by Frank L. Messana and published by . This book was released on 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Alkyldiazenido and Monohalodinitrogen Complexes of Molybdenum written by Samuel Donald Allen Iske and published by . This book was released on 1977 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rational Design Synthesis and Characterization of Amide Functionalized Pyridine and Benzimidazole Transition Metal Complexes written by Samuel S. K. Asem and published by . This book was released on 2011 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study expands our efforts to make a new class of Pt (II) compounds analogous to cisplatin and its derivatives using sterically hindered ligands. Pt compounds in this series have been synthesized using specially designed pyridine and benzimidazole ligands. These heterocycles, amide functionalized at position 2 with aryl and alkyl pendants, rapidly change their mode of coordination depending on the pH of the medium. These ligands, synthesized using condensation chemistry, also coordinate to Co(II), Ni(H), Cu(lI), and Zn(1I) generally as anionic bis-chelates through the benzimidazole nitrogen and the carbonyl oxygen, creating a four-coordinate complex with the exception of an unusual trigonal bipyramidal Zn(H) complex. I H NMR temperature studies reveal that these ligands interconvert between imide and amide isomers and that electron withdrawing pendants favor amide isomers. Crystal structures of Co(II) and Ni(1I) complexes of N-( I-methylbenzimidazol-2-yl)cyclohexanecarboxamide, for example, show two ligands bind per metal ion when reacted with acetate and nitrate salts. The bischelates of these Ni(1I) complexes also show expansions of their coordination spheres from four to five-coordinate. Furthermore, these Ni(II) bis-chelated complexes possess square planar or distorted 4-coordinate geometries. The synthesis and properties of several new Pt (II) complexes containing these ligands will be presented. A second generation and novel complex class containing metal-binding, linker and recognition domains is reported. Both classes of Pt complexes were obtained using a synthetic methodology which favors the cis isomers. The second generation complex crystallizes in the monoclinic space group P2dn with lattice dimensions a = 17.7393(5) A, b = 11.4632(3) A, c = 19.3959(5) A and ~ = 99.794(3)°. These complexes have been characterized using physical methods that include X-ray crystallography, IH &13C NMR, Mass spectrometry, UV and IR spectroscopies. Complexes similar in structure to cisplatin and carboplatin show varying cytotoxic properties toward different cancer cell lines. Additionally, some of these new Pt complexes show comparable and promising cytotoxicity against prostate cancer cell lines.
Download or read book Synthesis and characterization of metal complexes of 2 Benzoylpyridine and DI 2 Pyridyl Ketone Schiff Base Ligands derived from S Methyldithiocarbazate fragment and its application to biological activity toward P Falciparum written by Alina Uusiku and published by . This book was released on 2015 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Characterization and Catalytic Activity of Molybdenum VI Di and Monooxo Aryloxides written by Mauricio Quiroz-Guzmán and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemistry of molybdenum is immensely rich and diverse. Molybdenum is essential for life, and has many applications in industry. The first chapter offers a general perspective of the chemistry of molybdenum in high oxidation states dominated by diverse oxo species, such as the MoO22+ and MoO4+ units that are focus of my research. I describe the importance of MoO22+ complexes as models for the active sites of oxo transfer molybdoenzymes (e.g. DMSO oxidase) and for industrial heterogeneous transformation such as the SOHIO process (one of our ultimate goals). I also outline the importance of MoO4+ complexes as procatalysts for metathesis polymerization and as models of deoxygenated active sites of MoO22+ oxygen catalysts that have triggered our interest. The second chapter introduces the synthesis and full characterization of 4-, 5- and 6-coordinated MoO2(OAr)2L0-1 complexes with bulky aryloxide ligands, starting from the MoO2Cl2 or MoO2Cl2(DMF)2 precursors. Steric and electronic modifications in the aryloxide moieties were performed in order to understand their effect in the final structure and yields of the synthesized complexes. The nature and mechanism of formation of the radical species detected in their synthesis is proposed. The third chapter presents the facile synthesis of varios MoO(OAr)4-nCln complexes starting from the MoO2Cl2 precursor. Their mechanism of formation is proposed and the supporting evidence for this new reaction is provided. Steric and electronic modifications in the aryloxide moieties were used to study their structural and electronic effects in the MoO4+ complexes. The fourth chapter outlines the synthesis of Mo(VI) monooxo bisphenoxides with a characteristic cis-chloro cis-bisphoxide arrangement around the MoO4+ unit. Electronic and steric modifications in the bisphenoxide rings were done to determine their effect in the structure and reactivity of the final complexes. The fifth chapter introduces the application of the synthesized MoO(OAr)4-nCln and MoO(bisphenoxides)2Cl2 complexes as procatalysts for olefin metathesis polymerization of norbornene. The correlation between structure and reactivity of the procatalyst is discussed.
Download or read book Synthesis Chemical and Structural Characterization of Molybdenum hydrazido 2 Complexes with Tridentate Thiolate Ligands written by Lisa M. Throop and published by . This book was released on 1984 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Bipyridylosmium II Mixed Metal Complexes with Dipyrido 2 3 a 2 3 h phenazine DPOP Bridging Ligand written by Sunita Dayal and published by . This book was released on 1997 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Transitional Metal Pyridine Containing Complexes with Both Catalytic and Therapeutic Applications written by Magy Amir Maurice Mekhail and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pyridinophanes derived from pyclen are the focus of many studies as biological mimics, chelators, and catalytic precursors. Therefore, the desire to tune the reactivity of metal pyridinophane complexes has inspired modifications that include expansion of ring size and substitutions to the N-atoms. However, substitution on the pyridine moiety is largely unexplored to date. Herein, new synthetic strategies for pyclen-congeners bearing electron donating and electron withdrawing groups are introduced, resulting in doubling the number of pyridine functionalized molecules in literature. Further, the influence of such modifications on properties and reactivity of two metals (Fe(III) and Cu(II)) is described. For the Fe(III) system, 4-substitution of the pyridine ring successfully provides a regulatory handle on the electronic properties and the catalytic C-C coupling activity of the respective Fe complexes. These are the first examples of a structure-activity relationship study with the impact of electronic properties decoupled from structural properties and investigated. The Fe(III) system was also explored in a catalase mimetic study to determine the role of ligand design on the activity of the metal center through changing electronic properties and rigidity of the ligand. Varying the electronic properties of the ligand has a minor effect on catalase activity, but changes to the geometry of the complex have significant impacts on the system. This activity was also successfully observed to cellular models. The Cu(II) system was investigated as a superoxide dismutase mimic. Cu(II) Pyclen complexes, specifically, has been shown to match its coordination environment and to have high binding affinity. My studies highlight that modifications to the pyridine ring of the ligand can tune the redox potential, while exhibiting high binding stabilities and retaining the coordination environment. In fact, one of the complexes studied exhibits one of the highest SOD activities reported to date, which is hypothesized to be the result of not only the electronic properties of the Cu center but also the high binding stability exhibited by this complex. Altogether, this work focused on functionalizing the pyridine ring in pyridinophanes and studying the effect of the modifications on the electronics of metal complexes and their reactivity with both catalytic and potential therapeutic application.
Download or read book Synthesis and Characterization of Monomeric and Dimeric Complexes of Molybdenum and Tungsten Containing Metal ligand Multiple Bonds written by Keith Anthony Hall and published by . This book was released on 1993 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Indian Journal of Chemistry written by and published by . This book was released on 2002 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1989 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 1990 with total page 2598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Australian Journal of Chemistry written by and published by . This book was released on 1976 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:
