Skip to main content
Home
Department Of Physics text logo
  • Research
    • Our research
    • Our research groups
    • Our research in action
    • Research funding support
    • Summer internships for undergraduates
  • Study
    • Undergraduates
    • Postgraduates
  • Engage
    • For alumni
    • For business
    • For schools
    • For the public
Menu
The Oxford 750MHz NMR Spectrometer

The Oxford 750MHz NMR Spectrometer

Prof Jonathan Jones

Professor of Physics

Research theme

  • Quantum information and computation

Sub department

  • Atomic and Laser Physics

Research groups

  • NMR quantum computing
jonathan.jones@physics.ox.ac.uk
  • About
  • Publications

Contrasting photochemical and thermal reactivity of Ru(CO)2(PPh3)(dppe) towards hydrogen rationalised by parahydrogen NMR and DFT studies.

Dalton Trans (2006) 2072-2080

Authors:

Damir Blazina, John P Dunne, Stuart Aiken, Simon B Duckett, Charlotte Elkington, John E McGrady, Rinaldo Poli, Sue J Walton, M Sabieh Anwar, Jonathan A Jones, Hilary A Carteret

Abstract:

The synthesis, characterisation and thermal and photochemical reactivity of Ru(CO)2(PPh3)(dppe) 1 towards hydrogen are described. Compound proved to exist in both fac (major) and mer forms in solution. Under thermal conditions, PPh3 is lost from 1 in the major reaction pathway and the known complex Ru(CO)2(dppe)(H)2 2 is formed. Photochemically, CO loss is the dominant process, leading to the alternative dihydride Ru(CO)(PPh3)(dppe)(H)2 3. The major isomer of 3, viz. 3a, contains hydride ligands that are trans to CO and trans to one of the phosphorus atoms of the dppe ligand but a second isomer, 3b, where both hydride ligands are trans to distinct phosphines, is also formed. On the NMR timescale, no interconversion of 3a and 3b was observed, although hydride site interchange is evident with activation parameters of DeltaH(double dagger) = 95 +/- 6 kJ mol(-1) and DeltaS(double dagger) = 26 +/- 17 J K(-1) mol(-1). Density functional theory confirms that the observed species are the most stable isomeric forms, and suggests that hydride exchange occurs via a transition state featuring an eta2-coordinated H2 unit.
More details from the publisher
More details

NMR analogues of the quantum Zeno effect

PHYSICS LETTERS A 359:5 (2006) 424-427

Authors:

Li Xiao, Jonathan A Jones
More details from the publisher
Details from ArXiV

Robust logic gates and realistic quantum computation

PHYSICAL REVIEW A 73:3 (2006) ARTN 032334

Authors:

L Xiao, JA Jones
More details from the publisher
Details from ArXiV

Sharing polarization within quantum subspaces

PHYSICAL REVIEW A 73:2 (2006) ARTN 022322

Authors:

MS Anwar, JA Jones, SB Duckett
More details from the publisher
Details from ArXiV

Single qubit gates with jump and return sequences

PHYSICAL REVIEW A 74:5 (2006) ARTN 052324

Authors:

MD Bowdrey, JA Jones
More details from the publisher
Details from ArXiV

Pagination

  • First page First
  • Previous page Prev
  • …
  • Page 12
  • Page 13
  • Page 14
  • Page 15
  • Current page 16
  • Page 17
  • Page 18
  • Page 19
  • Page 20
  • …
  • Next page Next
  • Last page Last

Footer Menu

  • Contact us
  • Giving to the Dept of Physics
  • Work with us
  • Media

User account menu

  • Log in

Follow us

FIND US

Clarendon Laboratory,

Parks Road,

Oxford,

OX1 3PU

CONTACT US

Tel: +44(0)1865272200

University of Oxfrod logo Department Of Physics text logo
IOP Juno Champion logo Athena Swan Silver Award logo

© University of Oxford - Department of Physics

Cookies | Privacy policy | Accessibility statement

Built by: Versantus

  • Home
  • Research
  • Study
  • Engage
  • Our people
  • News & Comment
  • Events
  • Our facilities & services
  • About us
  • Current students
  • Staff intranet