Characterization of the Mixed-Valent Intermediate (n = 3) of the Complex Series {(.mu., .eta.3:.eta.3-L)[(Ru(terpy)]2}n+ with the Unsaturated Bridging Ligand N,N´-Bis-(.alpha.-picolinoyl)hydrazido(2-) = L2-

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F04%3A00101051" target="_blank" >RIV/61388955:_____/04:00101051 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Characterization of the Mixed-Valent Intermediate (n = 3) of the Complex Series {(.mu., .eta.3:.eta.3-L)[(Ru(terpy)]2}n+ with the Unsaturated Bridging Ligand N,N´-Bis-(.alpha.-picolinoyl)hydrazido(2-) = L2-

Original language description

N,N''-Bis(alpha-picolinoyl)hydrazine H2L, a potentially bis-tridentate conjugated ligand in its doubly deprotonated form L2-, has been used to synthesize the diruthenium(II) complex {(mu-L)[Ru(terpy)](2)}(PF6)(2). Its electrochemical and spectroelectrochemical (UV-Vis-NIR, EPR) investigation reveals a mixed-valent ((RuRuII)-Ru-III) intermediate with electrochemical and spectroscopic characteristics related to those of the {(mu-adc-R)[Ru(bpy)(2)](2)}(3+) ions (adc-R2- = bis-bidentate C-substituted diacylhydrazido(2-) ligands): comproportionation constant K-c = 10(9.0) (CH2Cl2), intervalence charge transfer band at 1000 nm (epsilon = 3800 M-1 cm(-1)), EPR signal at g(perpendicular to) = 2.14, g(parallel to) = 1.953. The non-innocent nature of Ln- is inferred from comparative analysis of the spectroscopic data.

Czech name

Charakterizace meziproduktů se smíšenou valencí (n = 3 ) u série komplexů {(.mu.,.eta.3:.eta.3-L)[(Ru(terpy)] 2}n+ s nenasyceným můstkovým ligandem N,N-Bis-(.alfa.-picolinoyl)hydrazido(2-) = L2-

Czech description

N,N''-Bis(alfa-picolinoyl)hydrazin H2L, potenciálně bis-tridentátní konjugovaný ligand v jeho dvojnásobně deprotonované formě L2-, byl používán k syntéze dirutheniových(II ) komplexů {(mu-L)[Ru(terpy)](2)}(PF6)(2). Jeho elektrochemické a spektroelektrochemické (UV-VIS-NIR, EPR ) studium odhalilo existenci inermediátu se smíšenou valencí ((RuRuII)-Ru-III ) s elektrochemickými a spektroskopickými characteristikami podobnými jako u iontů {(mu-adc-R)[Ru(bpy)(2)](2) }(3+ ) (adc-R2- = bis-bidentate C-substituted diacyl hydrazido(2-) ligands): komproporcionační konstanta K-c = 10(9.0) (CH2CL2), intervalenční pás u 1000 nm (epsilon = 3800 M-1 cm(-1)), EPR signál s g(perpendicular) = 2.14, g(parallel) = 1.953. ?Non-innocent? povaha Ln- je odvozena z komparativní analýzy spektroskopických dat.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2004

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Polyhedron

ISSN

0277-5387

e-ISSN

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Volume of the periodical

23

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

701-707

UT code for WoS article

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EID of the result in the Scopus database

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