A1 Journal article (refereed)
Uranium(iv) cyclobutadienyl sandwich compounds : synthesis, structure and chemical bonding (2020)
Tsoureas, N., Mansikkamäki, A., & Layfield, R. A. (2020). Uranium(iv) cyclobutadienyl sandwich compounds : synthesis, structure and chemical bonding. Chemical Communications, 56(6), 944-947. https://doi.org/10.1039/C9CC09018E
JYU authors or editors
Publication details
All authors or editors: Tsoureas, Nikolaos; Mansikkamäki, Akseli; Layfield, Richard A.
Journal or series: Chemical Communications
ISSN: 1359-7345
eISSN: 1364-548X
Publication year: 2020
Volume: 56
Issue number: 6
Pages range: 944-947
Publisher: Royal Society of Chemistry
Publication country: United Kingdom
Publication language: English
DOI: https://doi.org/10.1039/C9CC09018E
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/74489
Abstract
The 1 : 1 reactions of uranium(IV) tetrakis(borohydride) with the sodium and potassium salts of the cyclobutadienyl anion [C4(SiMe3)4]2− (Cb′′′′) produce the half-sandwich complexes [Na(12-crown-4)2][U(η4-Cb′′′′)(BH4)3] and [U(η4-Cb′′′′)(μ-BH4)3{K(THF)2}]2. In the 1 : 2 reaction of U(BH4)4 with Na2Cb′′′′, formation of [U(η4-Cb′′′′)(η3-C4H(SiMe3)3-κ-(CH2SiMe2)(BH4))]− reveals that a Cb′′′′ ligand undergoes an intramolecular deprotonation, resulting in an allyl/tuck-in bonding mode. A computational study reveals that the uranium–Cb′′′′ bonding has an appreciable covalent component with contributions from the uranium 5f and 6d orbitals.
Keywords: coordination complexes; uranium; chemical synthesis; chemical bonds
Contributing organizations
Ministry reporting: Yes
VIRTA submission year: 2020
JUFO rating: 2