Download or read book The Nitration of Chlorobis ethylenediamine Pyridine Cobalt III Chloride and Synthesis of Cobalt III Porphyrin Complexes written by Emmanuel Asiedu Nyako and published by . This book was released on 1984 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Masters Abstracts written by and published by . This book was released on 1985 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Masters Abstracts International written by and published by . This book was released on 1985 with total page 1632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis of Cobalt III and Ruthenium II Complexes of Pyridine and 4 substituted Pyridine capped Mono and Bis dioxocyclams written by Angela L. Reiff and published by . This book was released on 2005 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tris pyridine cobalt III Complexes written by and published by . This book was released on 1980 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kinetics of Electron Transfer Reactions of Cobalt III Complexes of 2 2 bipyridine written by Ghazala Ali and published by . This book was released on 1981 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Dichloro bis ethylenediamine Cobalt III Chloride written by Norman Fogel and published by . This book was released on 1956 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preparation of Some Bridged Peroxo and Superoxo Cobalt III Complexes with Ethylenediamine and Pyridine of Ammonia written by Ahmad Emad and published by . This book was released on 1968 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrolysis Reactions of Some Tris pyridine cobalt III Complexes in Aqueous Perchloric Acid written by Nicholas Loan and published by . This book was released on 1982 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Spectrophotometric Investigation of the Kinetics of Aquation of Trans dichlorobis ethylenediamine cobalt III Chloride Cis chloroaquobis ethtlenediamine cobalt III Chloride and Transchloroaquobis ethylenediamine cobalt III Chloride written by Robert Allen Bernoff and published by . This book was released on 1956 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Reactions of Cobalt III ethylenediaminediacetato Complexes written by Helen Rosemary Palmer and published by . This book was released on 1992 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Reactivities of Cobalt iii Alkylperoxo Complexes Bearing Quaterpyridine Ligand written by Yunzhou Chen and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct use of dioxygen (O2) in functionalizing organic molecules is highly desirable. In nature, enzymes perform alkane oxidation efficiently at ambient conditions. The transition metals involved in the active sites of enzymes play vital roles in binding with O2 and transferring electrons and protons during metabolism. Many metal-oxygen species, such as hydro(alkyl) peroxo complexes, are invoked as reactive intermediates in these biological processes. Given the complexity of enzymes, studying the reactivity of these enzymes with simple synthetic coordination compounds is one of the strategies. This thesis is mainly concerned with the oxidation of alkanes and alkenes catalyzed by tailor-made cobalt(III) alkylperoxo complexes at ambient conditions. In the first part, we report the design and synthesis of the highly electrophilic cobalt(III) alkylperoxo complex, [CoIII(qpy)(OOtBu)(NCCH3)]2+ (2), supported by a planar tetradentate quaterpyridine ligand (qpy = 2,2′:6′,2′′:6′′,2′′′-quaterpyridine). This complex activates C(sp3)–H bonds of a variety of organic molecules at ambient conditions and yields a series of alkylperoxo complexes with the general formula [CoIII(qpy)(OOR)(NCCH3)]2+ [RH = Et2O (3), THF (4), tBuOMe (5), ethylbenzene (6), toluene (7), cyclopentene (8), and 3-hexyne (9)], which have been well characterized by various spectroscopic techniques including NMR, ESI-MS, UV-vis, FT-IR, and CHN elemental analysis. The structures of these complexes have also been characterized by X-ray crystallography. In the second part, the mechanism for the alkane oxidation catalyzed by [CoIII(qpy)(OOR)(NCCH3)]2+ was extensively studied at room temperature and one atmospheric pressure. NMR study reveals the reaction stoichiometry. ESI-MS study indicates exogeneous O2 is crucial with the support of 18O-labeled experiments. Kinetics study by UV-vis and a significant kinetic isotopic effect resulted for the oxidation of ethylbenzene by 2 suggest a rate-limiting hydrogen-atom abstraction from organic substrates (R′H) by [CoIII(qpy)OOR]2+ via the proximal oxygen atom of the peroxo group (i.e., [CoIII(qpy)OOR]2+ + R′H → [CoII(qpy)]2+ + R′• + ROOH). The resulting alkyl radical R′• bound with O2 to form alkyl peroxyl radical R′OO•, which was rapidly scavenged by the [CoII(qpy)]2+ to give another alkylperoxo complex [CoIII(qpy)OOR′]2+. The proposed mechanism in the peroxidation of organic molecules b y alkyl(hydro)peroxo complexes is unprecedented. In the third part, we examine the catalytic properties of [CoIII(qpy)(OOR)(NCCH3)]2+ in aerobic oxidation of various substrates. Using ethylbenzene, cumene, cyclopentene, and cyclohexene as the substrates, [CoIII(qpy)(OOR)(NCCH3)]2+ are found to be active and robust catalysts to produce the corresponding hydroperoxides, alcohols, and ketones catalytically. A turnover of >3000 is achieved in the oxidation of cyclohexene for 7 d. In the fourth part, the reactivities of [CoIII(qpy)OOR]2+ with alkenes were explored. Alkenes with weak C–H bonds (e.g., 1,4-cyclohexadiene and cycloalkenes) resulted in C–H functionalization. In case there are no weak C–Hs in the alkenes (e.g., styrene), [CoIII(qpy)OOR]2+ catalyzes the polymerization of styrenes in O2 to produce polyalkylperoxo species. The [CoIII(qpy)(OOCH(OOtBu)CH2Ph)(NCCH3)]2+ ( bisalkylperoxo 11), has complex, been isolated and characterized by ESI-MS, NMR, and X-ray crystallography. In summary, this work demonstrates the highly electrophilic character of Co(III) alkylperoxo complexes supported by the qpy ligand. Under ambient conditions, these complexes are suitable catalysts to perform aerobic peroxidation of a variety of alkanes and alkenes

Download or read book Cobalt NMR Studies of Cobalt III Porphyrin Complexes written by Hyochoon Bang and published by . This book was released on 1990 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pandex Current Index to Scientific and Technical Literature written by and published by . This book was released on 1970 with total page 1404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inorganic and Organometallic Reaction Mechanisms written by Jim D. Atwood and published by John Wiley & Sons. This book was released on 1997-02-18 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jetzt in neuer Auflage: Das erfolgreiche Lehrwerk über Kinetik und Mechanismen anorganischer und organometallischer Reaktionen für fortgeschrittene Studenten! Hervorragend geeignet als Begleiter eines Vorlesungssemesters. Mit zahlreichen Übungsaufgaben; für eine bessere Übersicht sorgen Zusammenfassungen am Ende jedes Kapitels.

Download or read book Mechanisms of Inorganic Reactions written by R. Kent Murmann and published by . This book was released on 1965 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modern Coordination Chemistry written by G. J. Leigh and published by Royal Society of Chemistry. This book was released on 2002 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Joseph Chatt was a pioneering figure in coordination chemistry. Intended as a record of Chatt's life, work, and influence, this book begins with a description of Chatt's career presented by co-workers, contemporaries, and students, then goes on to show that many of today's leading practitioners in the field have been influenced by Chatt. The latest research in coordination chemistry is presented to highlight Chatt's continuing legacy, in sections on the synthesis and reactivity of hydrido and dihydrogen complexes, the chemistry of phosphines, transition metal complexes of olefins and related isolobal ligands, chemistry related to dinitrogen complexes, the biological work of the ARC unit of nitrogen fixation at the University of Sussex, and patterns and generalizations in stability and reactivity. Leigh is affiliated with the University of Sussex, UK, and Winterton is affiliated with the University of Liverpool, UK. The book is distributed in the US by Springer Verlag. Annotation copyrighted by Book News Inc., Portland, OR.