Výsledky vyhledávání - "Semiquinone Ligands"

Valence tautomerism induced nucleophilic ipso substitution in a coordinated tetrabromocatecholate ligand and diverse catalytic activity mimicking the function of phenoxazinone synthase

Autor: Curtis E. Moore, Narayan Ch. Jana, Paula Brandão, Moumita Patra, David M. Eichhorn, Antonio Frontera, Anangamohan Panja

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

Two new manganese(III) complexes, [pyH][Mn(Br(4)Cat)(2)(PY)1 (1) and [Mn(Br(4)Cat)(Br(3)PYCat)(PY)(2)] (2), where py is pyridine, Br(4)CatH(2) is tetrabromocatechol and Br(3)pyCatH(2) is 3,5,6-tribromo-4-pyridiniumcatechol, derived from redox 'noninn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c458f8aaa2da5d20e0f1c09c2a741a8e
https://doi.org/10.1016/j.molcata.2015.11.008

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{(μ-L)[RuII(acac)2]2}n, n = 2+, +, 0, −, 2−, with L = 3,3′,4,4′-tetraimino-3,3′,4,4′-tetrahydrobiphenyl. EPR-supported assignment of NIR absorptions for the paramagnetic intermediates

Autor: Wolfgang Kaim, Sandeep Ghumaan, Biprajit Sarkar, Srikanta Patra, Stanislav Záliš, Jan Fiedler, Goutam Kumar Lahiri

Publikováno v: Dalton Trans.. :750-753

A complete EPR and UV-Vis-NIR spectroelectrochemical characterisation has been carried out for the series 1(2+/+/0/-/2-) where 1 is the new complex {(mu-L)[Ru-II(acac)(2)](2)}, L = 3,3',4,4'-tetraimino-3,3',4,4'-tetrahydrobiphenyl. The paramagnetic i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f8720c2a677784ad0a982fcfbb941fd
https://doi.org/10.1039/b315927m

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UV-vis-NIR and EPR characterisation of the redox series [MQ(3)](2+,+,0,-,2-), M=Ru or Os, and Q=o-quinone derivative

Autor: Biprajit Sarkar, Jan Fiedler, Wolfgang Kaim, Stanislav Záliš, Goutam Kumar Lahiri, Atanu Kumar Das, Ralph Hübner

Publikováno v: IndraStra Global.

The neutral title compounds with Q = 3,5-di-tert-butyl-o-quinone or 4,6-di-tert-butyl-N-phenyl-o-iminobenzoquinone (Q(x)) were studied by UV-vis-NIR spectroelectrochemistry and by EPR spectroscopy in the case of the odd-electron monocation and monoan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a2e2c8df81085e825b0404144bb0177
http://dspace.library.iitb.ac.in/jspui/handle/100/15855

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Bis(acetylacetonato)ruthenium Complexes of Noninnocent 1,2-Dioxolene Ligands: Qualitatively Different Bonding in Relation to Monoimino and Diimino Analogues

Autor: Francisco A. Urbanos, Jan Fiedler, Shaikh M. Mobin, Tapan Kumar Mondal, Wolfgang Kaim, Reyes Jiménez-Aparicio, Dipanwita Das, Doyel Kumbhakar, Goutam Kumar Lahiri, Biprajit Sarkar

Publikováno v: IndraStra Global.

Coordination compounds [Ru(acac)(2)(Q)] (acac = acetylacetonate; Q = o-benzoquinone) were prepared as complexes 1 (Q = o-benzoquinone), 2 (Q = 3-methoxy-o-benzoquinone), 3 (Q = 4-methyl-o-benzoquinone), and 4 (Q = 3,5-di-tert-butyl-o-benzoquinone). T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf0b68107448a946caa9889bc3ab1b87
https://igi.indrastra.com/items/show/60280

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Intramolecular Valence and Spin Interaction in meso and rac Diastereomers of a p-Quinonoid-Bridged Diruthenium Complex

Autor: Shaikh M. Mobin, Reyes Jiménez-Aparicio, Biprajit Sarkar, Wolfgang Kaim, Doyel Kumbhakar, Francisco A. Urbanos, Jan Fiedler, Somnath Maji, Goutam Kumar Lahiri

Publikováno v: IndraStra Global.

The complexes meso- and rac-[(acac)(2)Ru(mu-L)Ru(acac)(2)](n), 1 and 2, where L(2-) = 1,4-dioxido-2,3-bis(3,5-dimethylpyrazol-1'-yl)benzene and acac = 2,4-pentanedionato. were characterized structurally, magnetically, electrochemically, and spectrosc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f3d0d591b5522307458fe12a147e6de
http://dspace.library.iitb.ac.in/xmlui/handle/10054/3916

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

Autor: Sandeep Ghumaan, Joris van Slageren, Goutam Kumar Lahiri, Srikanta Patra, Biprajit Sarkar, Jan Fiedler, Wolfgang Kaim

Publikováno v: IndraStra Global.

The new redox systems [(acac)(2)Ru(u-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-NI

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::981dcf804479d8dcf74c5265314edc39

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Separating innocence and non-innocence of ligands and metals in complexes [(L)Ru(acac)2](n) (n = -1, 0, +1; L = o-iminoquinone or o-iminothioquinone)

Autor: Goutam Kumar Lahiri, Biprajit Sarkar, Shaikh M. Mobin, Srikanta Patra, Wolfgang Kaim

Publikováno v: Inorganic chemistry. 42(20)

The diamagnetic title complexes were obtained from Ru(acac)(2)(CH3CN)(2) and 2-aminophenol or 2-aminothiophenol. X-ray structure analysis of (L-1)Ru(acac)(2) (L-1 = o-iminoquinone) revealed C-C intra-ring, C-O, and C-N distances which suggest a Ru-II

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fd4db46a32ff9d29dc80fca50b20510
https://pubmed.ncbi.nlm.nih.gov/14514323

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