About: Sensitive oxidation state ambivalence in unsymmetrical three-center (M/Q/M) systems [(acac)2Ru(mu-Q)Ru(acac)2]n, Q=1,10-phenanthroline-5,6-dione or 1,10-phenanthroline-5,6-diimine (n = +, 0, -, 2-)

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About: Sensitive oxidation state ambivalence in unsymmetrical three-center (M/Q/M) systems [(acac)2Ru(mu-Q)Ru(acac)2]n, Q=1,10-phenanthroline-5,6-dione or 1,10-phenanthroline-5,6-diimine (n = +, 0, -, 2-) Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The new redox systems [(acac)(2)Ru(mu-Q(1))Ru(acac)(2)](n) (1(n)) and [(acac)(2)Ru(mu-Q(2))Ru(acac)(2)](n) (2(n)) with Q(1) = 1,10-phenanthroline-5,6-dione and Q(2) = 1,10-phenanthroline-5,6-diimine were studied for n = +,0,-, and 2- using UV-Vis-NIR spectroelectrochemistry, and, in part, EPR and susceptometry. The ligands can bind the first metal (left) through the phenanthroline nitrogen atoms and the second metal (right) at the o-quinonoid chelate site. The neutral compounds are already different: Compound 1 is formulated as a Ru-II(mu-Q(1))(center dot-) Ru-III species with partially coupled semiquinone and ruthenium(III) centers. In contrast, a Ru-III(mu-Q(2))(2-) Ru-III structure is assigned to 2, which shows a weak antiferromagnetic spin-spin interaction (J = -1.14 cm(-1)) and displays an intense half-field signal in the EPR spectrum. The one-electron reduced forms are also differently formulated as Ru-II(mu-Q(1))(2-) Ru-III for 1(-) with a Ru-III-typical EPR response and ... The new redox systems [(acac)(2)Ru(mu-Q(1))Ru(acac)(2)](n) (1(n)) and [(acac)(2)Ru(mu-Q(2))Ru(acac)(2)](n) (2(n)) with Q(1) = 1,10-phenanthroline-5,6-dione and Q(2) = 1,10-phenanthroline-5,6-diimine were studied for n = +,0,-, and 2- using UV-Vis-NIR spectroelectrochemistry, and, in part, EPR and susceptometry. The ligands can bind the first metal (left) through the phenanthroline nitrogen atoms and the second metal (right) at the o-quinonoid chelate site. The neutral compounds are already different: Compound 1 is formulated as a Ru-II(mu-Q(1))(center dot-) Ru-III species with partially coupled semiquinone and ruthenium(III) centers. In contrast, a Ru-III(mu-Q(2))(2-) Ru-III structure is assigned to 2, which shows a weak antiferromagnetic spin-spin interaction (J = -1.14 cm(-1)) and displays an intense half-field signal in the EPR spectrum. The one-electron reduced forms are also differently formulated as Ru-II(mu-Q(1))(2-) Ru-III for 1(-) with a Ru-III-typical EPR response and ... (en) Nové redox systémy [(acac)2Ru(mu-Q1) Ru(acac)2]n (1n) a [(acac)2Ru(mu-Q2) Ru(acac)2]n (2n) s Q1 = 1,10-fenanthrolin-5,6-dion a Q2 = 1,10-fenanthrolin-5,6-diimin, n = +, 0, -, a 2- byly studovány s použitím UV-VIS-NIR spektroelektrochemie a zčásti EPR a susceptometrie. Ligandy mohou vázat první kov (levý) přes fenanthrolinové dusíkové atomy a druhý kov (pravý) přes o-chinonoid chelátové místo. Již neutrální sloučeniny jsou už různé: Sloučenina 1 je formulována jako RuII(mu-Q1).- RuIII typ s silně spojeným semichinonovým a přímo koordinovaným rutheniovým(III) centrem. Naopak, RuIII(mu-Q2)2- RuIII strukturu lze přiřadit komplexu 2, který vykazuje slabou antiferromagnetickou spin-spin interakci (J = -1.14 cm-1) a dává intenzivní half-field signál v EPR spektru. Jedenoelektronové redukované formy jsou také odlišně formulované, jako RuII(mu-Q1)2- RuIII pro 1- s RuIII typickou EPR odezvou, a jako RuII(mu-Q2).- RuII pro 2- s radikálovým typem EPR signálu u g = 2.0020. (cs)
Title	Sensitive oxidation state ambivalence in unsymmetrical three-center (M/Q/M) systems [(acac)2Ru(mu-Q)Ru(acac)2]n, Q=1,10-phenanthroline-5,6-dione or 1,10-phenanthroline-5,6-diimine (n = +, 0, -, 2-) Sensitive oxidation state ambivalence in unsymmetrical three-center (M/Q/M) systems [(acac)2Ru(mu-Q)Ru(acac)2]n, Q=1,10-phenanthroline-5,6-dione or 1,10-phenanthroline-5,6-diimine (n = +, 0, -, 2-) (en) Nejednoznačnost oxidačních stavů v nesymetrických systémech s třemi centry (M/Q/M ) [(acac)2Ru(mu-Q)Ru(acac)2]n, Q=1,10-phenanthroline-5,6-dione nebo 1,10-phenanthroline-5,6-diimine (n = +, 0, -, 2-) (cs)
skos:prefLabel	Sensitive oxidation state ambivalence in unsymmetrical three-center (M/Q/M) systems [(acac)2Ru(mu-Q)Ru(acac)2]n, Q=1,10-phenanthroline-5,6-dione or 1,10-phenanthroline-5,6-diimine (n = +, 0, -, 2-) Sensitive oxidation state ambivalence in unsymmetrical three-center (M/Q/M) systems [(acac)2Ru(mu-Q)Ru(acac)2]n, Q=1,10-phenanthroline-5,6-dione or 1,10-phenanthroline-5,6-diimine (n = +, 0, -, 2-) (en) Nejednoznačnost oxidačních stavů v nesymetrických systémech s třemi centry (M/Q/M ) [(acac)2Ru(mu-Q)Ru(acac)2]n, Q=1,10-phenanthroline-5,6-dione nebo 1,10-phenanthroline-5,6-diimine (n = +, 0, -, 2-) (cs)
skos:notation	RIV/61388955:_____/05:00022082!RIV06-AV0-61388955
http://linked.open.../vavai/riv/strany	3210;3214
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA203/03/0821), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	9
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Fiedler, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	542305
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/05:00022082
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	transition-metal complexes; electrochemistry; bunuclear complexes (en)
http://linked.open.../riv/klicoveSlovo	electrochemistry transition-metal complexes bunuclear complexes
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[3AFEA613ECDA]
http://linked.open...i/riv/nazevZdroje	Inorganic Chemistry
http://linked.open...in/vavai/riv/obor	CG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Electron transfer to new supramolecular complexes, large molecules with multiple active centers and ordered structures
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	44
http://linked.open...iv/tvurceVysledku	Fiedler, Jan Kaim, W. Lahiri, G. K. Sarkar, B. van Slageren, J. Patra, S. Ghumaan, S.
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0020-1669
number of pages	5 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Sensitive oxidation state ambivalence in unsymmetrical three-center (M/Q/M) systems [(acac)2Ru(mu-Q)Ru(acac)2]n, Q=1,10-phenanthroline-5,6-dione or 1,10-phenanthroline-5,6-diimine (n = +, 0, -, 2-)

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