A1 Refereed original research article in a scientific journal
Integration of catalyst and nucleophile in oxometal aminobis(phenolate) complexes with ammonium iodide pendant arm groups
Authors: Peuronen Anssi, Salojärvi Esko, Salonen Pasi, Lehtonen Ari
Publisher: Elsevier
Publication year: 2022
Journal: Journal of Molecular Structure
Journal acronym: j mol struct
Article number: 132827
Volume: 1260
DOI: https://doi.org/10.1016/j.molstruc.2022.132827(external)
Web address : https://www.sciencedirect.com/science/article/pii/S0022286022004999(external)
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/174647338(external)
An amine bisphenol ligand with an ammonium iodide group in the pendant arm (H2L) reacts with V, Mo and U oxometal precursors to form oxovanadium(V), dioxomolybdenum(VI) and dioxouranium(VI) species, respectively. In methanol solutions, vanadium(V) and molybdenum(VI) form 1:1 complexes [VO(OMe)(L)]I·2MeOH and [MoO2(L)(H2O)]I·2MeOH, where the cationic charge in the pendant arm is counterbalanced by an iodide anion. Uranium(VI) forms a complex in which the anionic charge of uranate complex unit is compensated by the cationic pendant arm. The complex crystallises as a co-crystal containing a neutral ligand precursor, namely [UO2(L)(OAc)]·[H2L]I·4MeOH. The oxovanadium(V) complex combines a Lewis acid, i.e. a pentacoordinated metal centre with a Lewis basic iodide moiety, which makes it a suitable catalyst for the coupling of CO2 with styrene oxide. The role of the ammonium moiety of the ligand is to carry the iodide nucleophile in the reaction.
Downloadable publication This is an electronic reprint of the original article. |  |
