Proof of Innocence for the Quintessential Noninnocent Ligand TCNQ in its Tetranuclear Complex with Four [fac-Re(CO)3(bpy)]+ Groups: Unusually Different Reactivity of the TCNX Ligands (TCNX = TCNE, TCNQ, TCNB).

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F03%3A54030214" target="_blank" >RIV/61388955:_____/03:54030214 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Proof of Innocence for the Quintessential Noninnocent Ligand TCNQ in its Tetranuclear Complex with Four [fac-Re(CO)3(bpy)]+ Groups: Unusually Different Reactivity of the TCNX Ligands (TCNX = TCNE, TCNQ, TCNB).
Original language description
The reactions of [fac-Re(CO)3(bpy)(MeOH)](PF6) with the TCNX ligands (TCNE, TCNQ, TCNB) in CH2Cl2 gave very different results. No reaction was observed with TCNB (1,2,4,5-tetracyanobenzene) whereas TCNE produced very labile intermediates which convertedunder mild conditions to structurally characterized {(-CN)[fac-Re(CO)3(bpy)]2}(PF6) with an eclipsed conformation relative to the Re-CN-Re axis. With TCNQ a stable tetranuclear complex {(4-TCNQ)[Re(CO)3(bpy)]4}(BF4)4 was obtained. Its structural, electrochemical and spectroscopic analysis indicates only negligible charge transfer from the rhenium(I) centers to the extremely strong  acceptor TCNQ. DFT calculations were used to confirm and explain the absence of electron delocalization from the metals to the TCNQ bridge. Correspondingly, the X-band and high-frequency (285 GHz) EPR data well as the IR and UV/VIS/NIR spectroelectrochemical results support the almost total confinement of the added electron.
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)