Download or read book Complexes of Ruthenium with Ligands Containing Nitrogen Donor Atoms microform written by Caesar V. (Caesar Valko) Senoff and published by National Library of Canada. This book was released on 1965 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arene Ruthenium Complexes Containing Nitrogen and Oxygen Donor Ligands written by Sanjay Kumar Singh and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific community has shown decent research interest in the field of organometallic complexes based on platinum group metals owing to their plausible use in synthetic and industrial chemistry. In this regard, transition metal complexes containing 6-arene, 5-Cp and Cp* have drawn special attention. In particular, arene complexes have emerged as versatile intermediate in organic synthesis as a consequence of the ease with which the arene ligand can be functionalized. The presence of a transition metal center and ancillary ligands on one face of the coordinated arene can serve as a valuable stereochemical element. The utility of 6-arene and 5-Cp and Cp* metal complexes emanates not only from the reactivity inherent to the coordinated ring but, also from the control over three facially disposed coordinated sites about a given metal center afforded by incorporation of an arene ligand. In search of new systems based on arene ruthenium chemistry which can behave as potential metallo-ligands, new 6-arene ruthenium and analogous 5-Cp complexes based on chelating N, N and N, O donor ligands and non-chelating nitrogen donor organic ligands has been synthesized and fully characterized.
Download or read book Iron and Ruthenium Complexes with Nitrogen and Oxygen Donor Ligands for Anti Cancer and Anti Viral Studies written by LAI-MING ELLA. WONG and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Iron and Ruthenium Complexes With Nitrogen and Oxygen Donor Ligands for Anti-cancer and Anti-viral Studies" by Lai-Ming, Ella, Wong, 黃禮明, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled IRON AND RUTHENIUM COMPLEXES WITH NITROGEN AND OXYGEN DONOR LIGANDS FOR ANTI-CANCER AND ANTI-VIRAL STUDIES Submitted by Ella Lai-Ming Wong For the degree of Doctor of Philosophy at The University of Hong Kong in February 2006 Development of drug resistance in cancer chemotherapy has stimulated the search for new anti-cancer drugs. Due to the versatile oxidation states and diverse coordination chemistry, iron and ruthenium compounds are potential candidates for new anti-cancer agents and metallopharmaceuticals. In this study, iron(II) complexes containing polypyridines as auxiliary ligand and ruthenium-oxo oxalato cluster were synthesized and characterized by X-ray crystallography, and their anti-cancer and anti-viral properties were examined. The iron(II) complexes, [Fe(R-qpy)(CH CN) ](ClO ) [qpy = 3 2 4 2 2,2′ 6′,2″ 6″,2′″ 6′″,2″″-quinquepyridine, R = H (1a) and Ph (1b)] and [Fe(Py -OH)(CH CN)](ClO ) (2) [Py-OH = 5 3 4 2 5 2,6-bis[hydroxybis(2-pyridyl)methyl]pyridine] were stable in physiological buffers and exhibited significant cytotoxicities against some established human cancer cell lines. According to the MTT assay, their IC values were 0.1 - 70 50 M; they exhibited more pronounced cytotoxicities against hepatocellular carcinoma cells than against other type of cancer cells. Flow cytometry studies revealed that 1a could cause cell cycle arrest of HeLa cells at the S-phase, which involved DNA synthesis. Complex 1a was found to catalyze epoxidation, aziridination and amidation of hydrocarbons with good substrate conversions and high product yields. The iron(IV)-oxo and -imido reactive intermediates were generated in situ and their formulations were verified by mass spectroscopy. By Evan''s method, the result supported the iron(IV) formulation with a low-spin d electronic configuration (S = 1). A ruthenium-oxo oxalato cluster formulated as Na [Ru ( -O) (C O ) ] (3) 7 4 3 4 2 4 6 was prepared. Structural studies and magnetic measurements revealed that the ruthenium atoms adopted the oxidation states of +III, +III, +III and +IV. Complex 3 showed anti-HIV properties on infected cells. Using the HIV-1(BaL) virus infected Hut/CCR5 cells, 3 was found to exhibit >90% inhibition on viral replication at 5 M concentration. Similar findings were obtained with other HIV-infected cell lines including GHOST/CXCR4 and PBMCs. Complex 3 was non-cytotoxic to these cells even at 50 M concentration. Relevant to anti-HIV activity, 3 was found to inhibit HIV-1 reverse transcriptase activity in vitro with IC = 2 nM. 50 III A series of ruthenium complexes, cis-[Ru (Me -tet)Cl ]ClO [Me -tet = 6 2 4 6 N, N, N′, N′-tetramethyl-3,6-dimethyl-3,6-diazaoctane-1,8-diamine], III III trans-[Ru (pyz) Cl]Cl (pyz = pyrazole), trans-[Ru (3Mepyz) Cl ]Cl 4 2 4 2 II III [3Mepyz = 3-methylpyrazole], [Ru (3Mepyz) ]Cl, [Ru (salen)(H O) ]Y 6 2 2 2 [H-salen = N, N''-bis(salicylidene)ethylenediamine, Y = Cl and PF ], 2 6 III cis-[Ru (cyclen)Cl]Cl [cyclen = 1,4,7,10-tetraazacyclododecane], 2III trans-[Ru (BiIml) Cl]Y [BiIml = biimidazole, Y = Cl and PF], and 2 2 6 II cis-[Ru (BiIml) (DMSO) ](ClO ) were examined for anti-cancer activities. 2 2 4 2 Their IC values were 4 - 100 M and their cytotoxicities could be affected by 50 the auxiliary ligands. The reduction potentials of the ruthenium compounds were +/0 in
Download or read book Complexes of Ruthenium with Ligands Containing Group V Donor Atoms written by Ronald Osborne Harris and published by . This book was released on 1963 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ruthenium Complexes with N C donor Ligands written by Joan Aguiló Carreras and published by . This book was released on 2013 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Un dels reptes més ambiciosos que té avui en dia la comunitat científica és millorar el coneixement de la reacció d'oxidació de l'aigua que dóna lloc a oxigen, protons i electrons. D'altra banda els epòxids son intermedis de reaccions diverses en la indústria química, particularment per a la síntesi de diversos polímers i "fine chemicals" com ara productes farmacèutics, additius alimentaris o fragàncies. Els aquo complexes mononuclears i dinuclears de ruteni amb lligands polipiridílics han estat estudiats a fons pel nostre grup de recerca i d'altres, convertint-se en catalitzadors útils per a l'oxidació d'aigua i per a l'epoxidació d'alquens. Aquesta tesi vol presentar i discutir els següents temes relacionat: 1.La immobilització de dos nous complexes moleculars del tipus "Ru-Hbpp" capaços d'oxidar aigua, sobre òxids metàl·lics com són el TiO2 i el SiO2 així com fent ús del polímer Nafion per tal d'assolir l'objectiu final de construir una cel·la foto-electroquímica. El comportament catalític d'aquests nous sistemes serà discutit i comparat tant amb les espècies homòlogues moleculars com amb d'altres sistemes similars. 2.La síntesi i caracterització d'un complex dinuclear de ruteni que conté un lligand pont amb disposició bis-facial. La seva reactivitat envers l'oxidació d'aigua i d'olefines i la discussió comparant amb sistemes ja descrits a la literatura també formen part d'aquesta secció. 3.En aquest capítol s'ha plantejat la síntesi d'una nova família de lligands híbrids tetradentats capaços de coordinar el ruteni tant per N com per C, camp en el que se n'han fet diversos avanços. Així mateix descrivim un nou complex dinuclear de ruteni contenint un d'aquests nous lligands. 4.La preparació i caracterització tant espectroscòpica com electroquímica d'una família de complexos que tenen com a fórmula general [RuII(PY4Im)(X)]n+ (X = Cl, n = 1 or X = H2O, n = 2), on PY4Im és el lligand pentadentat 1,3-bis(bis(2-piridil)metil)imidazol-2-ilidè. En aquest apartat també es descriurà l'estudi catalític d'aquestes noves espècies envers l'oxidació d'aigua i alquens.
Download or read book Complexes of Ruthenium with Ligands Containing Nitrogen Donor Atoms microfilm written by Caesar Valko Senoff and published by . This book was released on 1965 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Ruthenium Complexes Containing N Or and S donor Type of Ligands as Catalysts for Nitrile Hydration written by Patrícia Lopes Villena and published by . This book was released on 2015 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Ruthenium Complexes Containing N P and S donor Type of Ligands written by Xavier Sala Román and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ruthenium and Osmium Nitrogen Mulitple Bonded Complexes with Chelating Nitrogen And or Oxygen Atom Donor Ligands written by Ka-Lai Yip and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Ruthenium and osmium-nitrogen mulitple bonded complexes with chelating nitrogen and/or oxygen atom donor ligands: synthesis, structures and reactivity studies" by Ka-lai, Yip, 葉嘉麗, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b4501517 Subjects: Ruthenium compounds - Synthesis Osmium compounds - Synthesis Ligands Chelates
Download or read book Ruthenium and Iridium Carbonyls written by M. Andreina Moreno and published by . This book was released on 2005 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Iron and Ruthenium Complexes with Nitrogen and Oxygen Donor Ligands for Anti cancer and Anti viral Studies written by Lai-Ming Wong (Ella) and published by . This book was released on 2006 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multimetallic Ruthenium II Complexes Based on Biimidazole and Bibenzimidazole written by Philomina T. Matthews and published by . This book was released on 1989 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ruthenium Complexes written by Alvin A. Holder and published by John Wiley & Sons. This book was released on 2018-02-27 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by a team of highly respected researchers combining their expertise in chemistry, physics, and medicine, this book focuses on the use of rutheniumcontaining complexes in artificial photosynthesis and medicine. Following a brief introduction to the basic coordination chemistry of ruthenium complexes and their synthesis in section one, as well as their photophysical and photochemical properties, the authors discuss in detail the major concepts of artificial photosynthesis and mechanisms of hydrogen production and water oxidation with ruthenium in section two. The third section of the text covers biological properties and important medical applications of ruthenium complexes as therapeutic agents or in diagnostic imaging. Aimed at stimulating research in this active field, this is an invaluable information source for researchers in academia, health research institutes and governmental departments working in the field of organometallic chemistry, green and sustainable chemistry as well as medicine/drug discovery, while equally serving as a useful reference also for scientists in industry.
Download or read book Ruthenium Diphosphine Complexes with Auxiliary Nitrogen donor Ligands written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Reactions of Ruthenium 11 Carbonyl Compounds Containing N donor Ligands written by Nicholas C. Thomas and published by . This book was released on 1983 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Ruthenium Complexes with N N P P and N P 2 Donor Sets written by Xinwei Yang and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery of nonlinear effects, both the theory and measurement techniques have been developed significantly, especially since the invention of the laser. However, structure-NLO property relationships for organometallics as well as their NLO mechanisms are far less explored than those of organic molecules and inorganic salts. The greater flexibility and exceptionally large NLO responses of organometallic compounds attracts chemists to this field. Modification of coordinated co-ligands in organometallic systems has influence on the NLO merit by introducing new electronic charge-transfer transitions, oxidation state and coordination sphere of the metal centers. In this work, the donor sets of the ruthenium complexes were modified from the most investigated (P-P)(P-P) to (N-N)(P-P) and (N-P)2 and a series of ruthenium complexes were synthesized and characterized. In Chapter 2, the study of the Ru(N-N)(P-P) complexes is detailed. Three bidentate diphosphine ligands (dppe, dppb and dppf) and one diimine ligand (tert-Bu-bpy) were selected for this study as the diphosphine and diimine ligands, respectively. Ruthenium halide and mono-alkynyl complexes were obtained successfully. Their optical, electrochemical and spectroelectrochemical properties were examined and are discussed. The formation of eta3- and eta1-butenynyl complexes was confirmed by single-crystal X-ray diffraction. Attempts towards bis-alkynyl complexes were made, but no conclusive evidence could be obtained to confirm the successful synthesis of this species. In Chapter 3, the focus of the work is the study of ruthenium complexes with a (N-P)2 donor set. Two iminophosphine ligands, 2-(diphenylphosphino)pyridine (PPh2py) and 8-(diphenylphosphino)quinoline (PPh2qn), were selected for this study. The cis-RuCl2(N-P) complexes and the corresponding dimers were synthesized and characterized. Their optical and electrochemical properties were measured and are discussed. In Chapter 4, the quadratic and cubic nonlinear optical properties of organometallic complexes were explored by hyper-Rayleigh scattering (HRS) and frequency-depentdent Z-scan techniques, respectively. The first hyperpolarizabilities of the ruthenium halide and mono-alkynyl complexes described in Chapter 2 were determined by HRS measurements. The second hyperpolarizabilities of some organometallic complexes synthesized by the Humphrey group and the collaborators were measured by the Z-scan technique.
Download or read book Mononuclear ruthenium complexes bearing N Donor and NHC ligands written by Hai-Jie Liu and published by . This book was released on 2014 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:
