2000
DOI: 10.1016/s1387-7003(99)00182-3
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Ni(0) catalysed homo-coupling reactions: a novel route towards the synthesis of multinuclear ruthenium polypyridine complexes featuring made-to-order properties

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Cited by 30 publications
(6 citation statements)
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“…Improving electronic communication in such Ru(II)/Ru(III) complexes requires BLs with higher-energy orbitals such that the HOMO can become involved in hole transfer, cf. [ I ] + , and in Ru(II)/Ru(III) MV complexes anionic BLs often result in stronger metal−metal coupling than do comparable neutral BLs for exactly this reason. 2b,4a In particular, Haga et al and Vos et al have used protonation/deprotonation processes of triazole or imidazole groups in the bridging pathway to show that increasing the negative charge on the BL increases the metal−metal coupling.…”
Section: Introductionmentioning
confidence: 99%
“…Improving electronic communication in such Ru(II)/Ru(III) complexes requires BLs with higher-energy orbitals such that the HOMO can become involved in hole transfer, cf. [ I ] + , and in Ru(II)/Ru(III) MV complexes anionic BLs often result in stronger metal−metal coupling than do comparable neutral BLs for exactly this reason. 2b,4a In particular, Haga et al and Vos et al have used protonation/deprotonation processes of triazole or imidazole groups in the bridging pathway to show that increasing the negative charge on the BL increases the metal−metal coupling.…”
Section: Introductionmentioning
confidence: 99%
“…In three of these isomers (isomers a − c in Figure ), the Ru(bpy) 2 moiety is bound to a pyridine (or pyrazine) and a triazole ring; in the other two isomers, coordination takes place via the two central triazole rings and does not involve the pyridine and pyrazine rings (isomers d and e in Figure ) . To avoid the formation of so many different coordination isomers, a new synthetic method was developed . This method is based on the Ni(0) catalyzed coupling reported for bromide containing organic compounds …”
Section: Discussionmentioning
confidence: 99%
“…The important observation is that by control of the protonation of the bridge a three-way proton controlled molecular switch is obtained, which can be read by electrochemical or spectroscopic methods. A preliminary communication on this work has recently appeared …”
Section: Introductionmentioning
confidence: 99%
“…In 2000, Fanni et al reported a new synthetic procedure for the efficient preparation of binuclear Ru(II) polypyridyl complexes, by performing intermolecular homocoupling between two 1,2,4-triazole bromide in the C3 position ( Scheme 13 ) [ 32 ]. The halide functional group is necessary to mediate the Ni-catalyzed reaction in the presence of triphenylphosphine and a zinc reducing reagent.…”
Section: Recent Advancement Of Bipyrazole Synthesesmentioning
confidence: 99%