Download or read book Complexes of Rhenium V with Bidentate Nitrogen and Oxygen Donor Ligands written by Joanne Perils and published by . This book was released on 1995 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Novel High Oxidation State Complexes of Rhenium and Technetium with Multidentate Nitrogen Sulfur and Oxygen Donor Ligands written by Hanelie Janien Adendorff and published by . This book was released on 1993 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium V Complexes with Potentially Bidentate Aromatic N N and N O donor Ligands written by Dunyiswa Mpinda and published by . This book was released on 2000 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Photophysics and Photochemistry of Rhenium V Complexes with Multiply Bonded Nitrogen and Oxygen Ligands written by 譚國光 and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Synthesis, Photophysics and Photochemistry of Rhenium (v) Complexes With Multiply-bonded Nitrogen and Oxygen Ligands" by 譚國光, Kwok-kwong, Tam, 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_b3123446 Subjects: Rhenium Ligands Photochemistry
Download or read book Synthesis Photophysics and Photochemistry of Rhenium v Complexes with Multiply bonded Nitrogen and Oxygen Ligands written by Kwok-kwong Tam and published by . This book was released on 1995 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium V Complexes with Ambidentate N O O O and N N donor Ligands written by Joanne Perils and published by . This book was released on 1999 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium I III and V Complexes with Potentially Multidentate N O Donor Ligands written by Gratien Habarurema and published by . This book was released on 2013 with total page 284 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 Ella Wong and published by Open Dissertation Press. 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 Rhenium Complexes with O N S Ligands written by Sulochana Junnotula and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The main focus of this thesis is the synthesis and characterization of nonradioactive rhenium complexes containing O, N, S ligands. Chapter 2 describes the rhenium labeling of four somatostatin analogues. Confirmation for the formation of nonradioactive rhenium labeled peptides was accomplished with LC-MS. Purification was done by analytical HPLC. Chapter 3 describes the synthesis, characterization and determination of acid dissociation constant values for the two rhenium complexes with ethylenediamine type ligands. This chapter also describes the synthesis and characterization of a rhenium amine complex with the 2-aminoethanethiolate ligand and a phosphine ligand.
Download or read book Complexes of Technetium V and Rhenium V with Heterocyclic S N and O N donor Ligands written by Hanelie Janien Kemp and published by . This book was released on 1991 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Coordination Chemistry II written by J. A. McCleverty and published by Newnes. This book was released on 2003-12-03 with total page 11845 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Coordination Chemistry II (CCC II) is the sequel to what has become a classic in the field, Comprehensive Coordination Chemistry, published in 1987. CCC II builds on the first and surveys new developments authoritatively in over 200 newly comissioned chapters, with an emphasis on current trends in biology, materials science and other areas of contemporary scientific interest.
Download or read book Some Rhenium Complexes with Nitrogen Oxygen and Sulfur Donors written by Edward James Rollerson and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium Complexes of Some Nitrogen containing Ligands written by and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 1,2-Dialkylhydrazines are cleaved at the N~ bond on reaction with oxotrichlorobis(triphenylphosphine)rhenium{V) to give alkylimido complexes of the type [Re(NR)C13(PPh3)2J. 1,2-Dibenzylhydrazine reacts anomalously to give a Re(IV) amido complex of the type Retention of the N-N bond occurs on reaction of I ,2-dioC'll::.oy111ydrazinc with oxotrichlorobis(triphenylphosphine)rhenium(V) in benzene-ethanol, and a novel chelated benzoylhydrazido complex is formed. Employment of benzene-acetone as reaction medium permits the isolation of new benzoylhydrazone complexes. The formation of chelate rings containing nitrogen is not restricted m,aroyl hydrazines, and dibenzamidc gives Cl complex analogous to the mown rhenium acetylacetonates. The chelated benzoylhydrazido complexes react rapidly with cyanides, pyridine, phosphines, halogens and carbon monoxide to give rhenium(III) benzoy.lazo complexes, containing the -N=NCOPh group. Prolonged treatment of the benzoylhydrazidc complex with ditertiary and certain monotertiary phosphincs gives a series of new rhenium(I) tctrakis(phosphine)dinitJ'ogcn complexes. The first fluorophosphine and phosphite dinitrogcn complexes have been prepared by this method. The complex [ReCl(N2)(PMe2Ph)4] has also been prepared from dinitr~gen gas by reduction of [RcC13(PMe2Pll)3] under a dinitrogen pressure of 80 atmospheres. 15N2 labelling has been --1 employed to confinn the assignment of strong infrared bands in 1900-2100cm region to v{N=N). Carbon .monoxide reacts with the chelated benzoylhydrazido or benzoy.l.a.co complexes to give bis{carbonyl)dinitrogen complexes. The N=N and C=O stretching vibrations are shown to be st.rongly coupled by 15NZ labelling, infrared bands in the 1900-2100cm- 1 and no assignments of region can be made.The rhenium(l) tetrakis(phosphine)dinitrogen complexes react with halogens and oxidising nletal salts to give the first series of paramagnetic dinitrogen complexes. Transition metal salts such as [MOCl4(Etp)2] react with [ReCl(N2)(P}.fe2Ph)4]to give dinitrogen bridged complexes with abnonnally low N=N stretching frequencies (1680-1850CJlt-1). Treatment of the bis(carbonyl)dinitrogen complexes with mono- and ditertiaryphosphincs provides a facile method for the preparation of rhenium(I) mono- and bis -carbonyl complexes.
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 Open Dissertation Press. 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 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 Comprehensive Coordination Chemistry II Transition metal groups 7 and 8 written by Jon A. McCleverty and published by Pergamon. This book was released on 2004 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Characterization and Reactivity Studies of Hexanuclear Rhenium Cluster Complexes with Oxygen and Sulfur Donor Ligands written by Julia A. Edwards and published by . This book was released on 2008 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
