Options
Süss-Fink, Georg
Nom
Süss-Fink, Georg
Affiliation principale
Fonction
Professeur ordinaire
Email
georg.suess-fink@unine.ch
Identifiants
Résultat de la recherche
Voici les éléments 1 - 10 sur 449
- PublicationMétadonnées seulementCarboxylation of methane with CO or CO2 in aqueous solution catalysed by vanadium complexes(1998)
; - PublicationMétadonnées seulement
- PublicationMétadonnées seulementSawhorse-type diruthenium tetracarbonyl complexes containing porphyrin-derived ligands as highly selective photosensitizers for female reproductive cancer cells(2009)
; ; Juillerat-Jeanneret, LucienneDiruthenium tetracarbonyl complexes of the type [Ru2(CO)4(?2-?2-O2CR)2L2] contg. a Ru-Ru backbone with four equatorial carbonyl ligands, two carboxylato bridges, and two axial two-electron ligands in a sawhorse-like geometry have been synthesized with porphyrin-derived substituents in the axial ligands [1: R is CH3, L is 5-(4-pyridyl)-10,15,20-triphenyl-21,23H-porphyrin], in the bridging carboxylato ligands [2: RCO2H is 5-(4-carboxyphenyl)-10,15,20-triphenyl-21,23H-porphyrin, L is PPh3; 3: RCO2H is 5-(4-carboxyphenyl)-10,15,20-triphenyl-21,23H-porphyrin, L is 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane], or in both positions [4: RCO2H is 5-(4-carboxyphenyl)-10,15,20-triphenyl-21,23H-porphyrin, L is 5-(4-pyridyl)-10,15,20-triphenyl-21,23H-porphyrin]. Compds. 1-3 were assessed on different types of human cancer cells and normal cells. Their uptake by cells was quantified by fluorescence and checked by fluorescence microscopy. These compds. were taken up by human HeLa cervix and A2780 and Ovcar ovarian carcinoma cells but not by normal cells and other cancer cell lines (A549 pulmonary, Me300 melanoma, PC3 and LnCap prostate, KB head and neck, MDAMB231 and MCF7 breast, or HT29 colon cancer cells). The compds. demonstrated no cytotoxicity in the absence of laser irradn. but exhibited good phototoxicities in HeLa and A2780 cells when exposed to laser light at 652 nm, displaying an LD50 between 1.5 and 6.5 J/cm2 in these two cell lines and more than 15 J/cm2 for the others. Thus, these types of porphyric compd. present specificity for cancer cell lines of the female reproductive system and not for normal cells; thus being promising new organometallic photosensitizers. [on SciFinder(R)] - PublicationMétadonnées seulementCatalytic functionalization of methane(: John Wiley & Sons Ltd, 1999)
; - PublicationMétadonnées seulement
- PublicationMétadonnées seulementSynthesis and molecular structure of trinuclear mixed-metal cluster cations containing arene and hydrido ligands(2006)
; The mixed-metal trinuclear cluster cations [H3Ru2(C6Me6)2Os(C6H6)(O)]+ (1), [H3Ru2(1,2,4,5-C6H2Me4)2Os(p-MeC6H4 iPr)(O)]+ (2) and [H3Ru2(1,2,4,5-C6H2Me4)2Os(C6H6)(O)]+ (3) have been synthesized from the corresponding dinuclear precursors [H3Ru2(arene)2]+ and the corresponding mononuclear complexes [Os(arene)(H2O)3]2+, isolated and characterized as the tetrafluoroborate and hexafluorophosphate salts. The cations 1, 2 and 3 are heteronuclear analogs of the cluster cation [H3Ru3(C6H6)(C6Me6)2(O)]+ that possesses a homonuclear metallic core. The single-crystal x-ray structure analyses of [1][BF4], [2][PF6] and [3][PF6] reveal an equiangular metal triangle despite the presence of an osmium atom in the metallic core. [on SciFinder(R)] - PublicationMétadonnées seulementRuthenium nanoparticles intercalated in hectorite: a reusable hydrogenation catalyst for benzene and toluene(2007)
; ; - PublicationMétadonnées seulement
- PublicationMétadonnées seulementConversion of ethylene into ethylidyne on a mixed-metal cluster: synthesis and structure of IrRu4(CO)(15)(mu(4)-CH3)(1999)
; The thermal reaction of the tetranuclear cluster HIrRu3(CO)(13) with ethylene in hexane (90 degrees C, 2 bar) affords, in addition to H3IrRu3(CO)(12), the pentanuclear cluster HIrRu4(CO)(15)(mu(4)-C-CH3) (1) in which the ethylidyne ligand is coordinated through a carbon atom to the four ruthenium atoms in the IrRu4 core. In this reaction, the CH2=CH2 molecule has been transformed into a C-CH3 moiety coordinated as a mu(4)-ligand to the cluster. (C) 1999 Elsevier Science S.A. All rights reserved. - PublicationMétadonnées seulementChiral arene ruthenium complexes: synthesis and molecular structure of the enantiopure cluster cation (S)-[H3Ru3{C6H5[CH(CH3)CH2OH]}(C6Me6)2(O)]+(2003)
; The reaction of enantiopure (R)-(2-cyclohexa-1,4-dienyl)propan-1-ol with ruthenium chloride hydrate yields, without racemization of the chiral ligand, the chloro-bridged dinuclear complex (S,S)-[RuCl2{C6H5[CH(CH3)CH2OH]}]2 (1). The dimer 1 reacts with triphenylphosphine to give the mononuclear complex (S)-[RuCl2{C6H5[CH(CH3)CH2OH]}(PPh3)] (2). A single-crystal X-ray structure anal. of 2 reveals the abs. configuration of the asym. carbon atom to have remained, the change from (R) to (S) being due to the priority change caused by coordination; in the solid state, one-dimensional hydrogen-bonded chains are formed between the hydroxy functions and chloro ligands of neighboring mols. The mononuclear cationic complex (S)-[Ru{C6H5[CH(CH3)CH2OH]}(H2O) 3]2+, formed in situ from 1 in aq. soln., reacts with the dinuclear complex [H3Ru2(C6Me6)2]+ to give a chiral trinuclear arene-ruthenium cluster, the cation (S)-[H3Ru3{C6H5[CH(CH3)CH2OH]}(C6Me6)2(O)]+ (3). This enantiopure cation has been isolated and characterized as its tetrafluoroborate salt. The single-crystal X-ray structure anal. of (S)-[3][BF4] shows a strong intramol. hydrogen bond between the ?3-oxo cap and the hydroxy function, which also persists in acetone solvent, as demonstrated by NMR spectroscopy. [on SciFinder(R)]