Platinum(II) phosphonate complexes derived from endo-8-camphanylphosphonic acid

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dc.contributor.authorLeach, Meto T.
dc.contributor.authorHenderson, William
dc.contributor.authorWilkins, Alistair L.
dc.contributor.authorLane, Joseph R.
dc.contributor.authorFortney-Zirker, Ryland G.
dc.contributor.authorTurnbull, Mark M.
dc.contributor.authorNicholson, Brian K.
dc.date.accessioned2011-07-01T02:39:56Z
dc.date.available2011-07-01T02:39:56Z
dc.date.issued2011
dc.description.abstractThe reactions of cis-[PtCl₂L₂] [L = PPh₃, PMe₂Ph or L₂ = Ph₂P(CH₂)₂PPh₂ (dppe)] with endo-8-camphanylphosphonic acid (CamPO₃H₂) and Ag₂O in refluxing dichloromethane gave platinum(II) phosphonate complexes [Pt(O₃PCam)L₂]. The X-ray crystal structure of [Pt(O₃PCam)(PPh₃)₂]•₂CHCl₃ shows that the bulky camphanyl group, rather than being directed away from the platinum, is instead directed into a pocket formed by the Pt and the two PPh₃ ligands. This allows the O₃P–CH₂ group to have a preferred staggered conformation. The complexes were studied in detail by NMR spectroscopy, which demonstrates non-fluxional behaviour for the sterically bulky PPh₃ and dppe derivatives, which contain inequivalent phosphine ligands in their ³¹P NMR spectra. These findings are backed up by theoretical calculations on the PPh₃ and PPhMe₂ derivatives, which show, respectively, high and low energy barriers to rotation of the camphanyl group in the PPh₃ and PPhMe₂ complexes. The X-ray crystal structure of CamPO₃H₂ is also reported, and consists of hydrogen-bonded hexameric aggregates, which assemble to form a columnar structure containing hydrophilic phosphonic acid channels surrounded by a sheath of bulky, hydrophobic camphanyl groups.en_NZ
dc.format.mimetypeapplication/pdf
dc.identifier.citationLeach, M.T., Henderson, W., Wilkins, A.L., Lane, J.R., Fortney-Zirker, R.G., Turnbull, M.M. & Nicholson, B.K. (2011). Platinum(II) phosphonate complexes derived from endo-8-camphanylphosphonic acid. Inorganica Chimica Acta, available online 17 May 2011.en_NZ
dc.identifier.doi10.1016/j.ica.2011.05.013en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/5437
dc.language.isoen
dc.publisherElsevieren_NZ
dc.relation.isPartOfInorganica Chimica Actaen_NZ
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S0020169311004580en_NZ
dc.subjectplatinumen_NZ
dc.subjectphosphonic aciden_NZ
dc.subjectphosphonic aciden_NZ
dc.subjectX-ray crystal structureen_NZ
dc.subjectNMR spectroscopyen_NZ
dc.subjecttheoretical calculationsen_NZ
dc.titlePlatinum(II) phosphonate complexes derived from endo-8-camphanylphosphonic aciden_NZ
dc.typeJournal Articleen_NZ
pubs.begin-page228en_NZ
pubs.elements-id36028
pubs.end-page235en_NZ
pubs.issue1en_NZ
pubs.volume375en_NZ
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