Jump to main content
Jump to site search

Issue 4, 2018
Previous Article Next Article

Orientation selection in high-field RIDME and PELDOR experiments involving low-spin CoII ions

Author affiliations

Abstract

Orientation selective (OS) RIDME and PELDOR were conducted on a low-spin CoII complex coordinated by two nitroxide (NO) labelled 2,2′:6′,2′′-terpyridine ligands. Co–NO RIDME at W- and Q-band gave insight into the relative orientation between the Co–NO interspin vector (rCo–NO) and the NO moiety. This was further supported by W-band Co–NO PELDOR that also allowed elucidating the relative orientation of the CoII and NO g-tensors. Differences to earlier predictions were confirmed by DFT calculations. Finally, NO–NO PELDOR allowed retrieving the mutual orientations between the NO–NO interspin vector (rNO–NO) and the NO moieties. The results demonstrate that OS-RIDME and -PELDOR can provide geometric structure information on a system containing a CoII ion and two nitroxides. Especially, the high sensitivity and ease of interpretation of RIDME at W-band opens avenues for new applications of CoII as orthogonal spin label.

Graphical abstract: Orientation selection in high-field RIDME and PELDOR experiments involving low-spin CoII ions

Back to tab navigation

Supplementary files

Publication details

The article was received on 25 Oct 2017, accepted on 22 Dec 2017 and first published on 05 Jan 2018


Article type: Communication
DOI: 10.1039/C7CP07248A
Citation: Phys. Chem. Chem. Phys., 2018,20, 2151-2154
  •   Request permissions

    Orientation selection in high-field RIDME and PELDOR experiments involving low-spin CoII ions

    A. Giannoulis, C. L. Motion, M. Oranges, M. Bühl, G. M. Smith and B. E. Bode, Phys. Chem. Chem. Phys., 2018, 20, 2151
    DOI: 10.1039/C7CP07248A

Search articles by author

Spotlight

Advertisements