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dc.contributor.authorBAKER, ROBERTen
dc.date.accessioned2014-06-03T13:32:41Z
dc.date.available2014-06-03T13:32:41Z
dc.date.issued2006en
dc.date.submitted2006en
dc.identifier.citationS. Aldridge, R.J. Baker, N.D. Coombs, C. Jones, R.P. Rose, A. Rossin and D.J. Willock,, Complexes of a gallium heterocycle with transition metal dicyclopentadienyl and cyclopentadienylcarbonyl fragments, and with a dialkylmanganese compound., Dalton Trans.,, 2006, 3313, 3320en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/69581
dc.descriptionPUBLISHEDen
dc.description.abstractThe reactivity of several transition metal half sandwich complexes towards an anionic gallium(I) heterocyclic complex, [K(tmeda)][Ga{[N(Ar)C(H)]2}] (Ar = C6H3Pri2-2,6), has been investigated. This has led to the anionic half sandwich complexes, [K(tmeda)][(C5H4R)M(CO)n[Ga{[N(Ar)C(H)]2}]] (M = V, R = H, n = 3; M = Mn, R = Me, n = 2; M = Co, R = H, n = 1), which crystallographic studies show to form dimers (M = Mn and Co) or a polymer (M = V) through bridging potassium cations. The metal–gallium bond lengths in all complexes are very short which, combined with some spectroscopic evidence, is suggestive of M–Ga π-bonding. Density functional theory studies of models of all complexes indicate that the level of back-bonding in these complexes is, however, minimal and of a similar order to that seen in analogous complexes incorporating neutral N-heterocyclic carbene ligands. Reactions of the metallocenes, [M(C5H4Me)2] (M = V or Cr), with the digallane(4), [Ga{[N(Ar)C(H)]2}]2, have afforded the neutral complexes, [M(C5H4Me)2[Ga{[N(Ar)C(H)]2}]], which are thought to be formed via an initial oxidative insertion of the transition metal centre into the Ga–Ga bond of the digallane. X-Ray crystallography shows the complexes to be monomeric. One (M = V) reacts with one equivalent of [K(tmeda)][Ga{[N(Ar)C(H)]2}] to give the crystallographically characterised, anionic bis(gallyl)-complex, [K(tmeda)][V(C5H4Me)2[Ga{[N(Ar)C(H)]2}]2]. For comparison, the reaction of [K(tmeda)][Ga{[N(Ar)C(H)]2}] with [Mn{CH(SiMe3)2}2] was carried out and gave the monomeric, anionic complex, [K(tmeda)][Mn{CH(SiMe3)2}2[Ga{[N(Ar)C(H)]2}]].en
dc.format.extent3313en
dc.format.extent3320en
dc.language.isoenen
dc.relation.ispartofseriesDalton Trans.,en
dc.rightsYen
dc.subjectChemistryen
dc.titleComplexes of a gallium heterocycle with transition metal dicyclopentadienyl and cyclopentadienylcarbonyl fragments, and with a dialkylmanganese compound.en
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/bakerrjen
dc.identifier.rssinternalid57430en
dc.identifier.doihttp://dx.doi.org/10.1039/b604640aen
dc.rights.ecaccessrightsopenAccess


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