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Probing the role of weak outer sphere interactions (H-bonds) in VO(3,5-tBu2-salophen) – Epoxide adducts by EPR, ENDOR and HYSCORE

Carter, Emma ORCID: https://orcid.org/0000-0001-6691-2377, Fallis, Ian Andrew ORCID: https://orcid.org/0000-0001-7361-0182, Murphy, Damien Martin ORCID: https://orcid.org/0000-0002-5941-4879, Willock, David James ORCID: https://orcid.org/0000-0002-8893-1090, Van Doorslaer, S. and Vinck, E. 2010. Probing the role of weak outer sphere interactions (H-bonds) in VO(3,5-tBu2-salophen) – Epoxide adducts by EPR, ENDOR and HYSCORE. Chemical Physics Letters 486 (1-3) , pp. 74-79. 10.1016/j.cplett.2009.12.066

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Abstract

The role of H-bonds in controlling the binding mode of epoxides, namely propylene oxide (3) and cis-2,3-epoxybutane (4), to the vanadyl salen-type complexes, N,N′-bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexane-diamino-vanadium (IV) oxide, [VO(1)], and VO(3,5-tBu2-salophen), [VO(2)], have been examined using cw-EPR, cw-ENDOR and HYSCORE spectroscopy. One of the methine protons from the cyclohexyl backbone in [VO(1)] has previously been shown to form a weak H-bond with the epoxide oxygen atom. The absence of this methine proton in the salophen derivative [VO(2)] removes this H-bonding ability of the complex and in turn weakens the epoxide interaction.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Advanced Research Computing @ Cardiff (ARCCA)
Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Publisher: Elsevier
ISSN: 0009-2614
Funders: EPSRC
Last Modified: 03 Dec 2022 11:19
URI: https://orca.cardiff.ac.uk/id/eprint/12970

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