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Preparation and Characterization of Uranium–Iron Triple‐Bonded UFe(CO) 3 − and OUFe(CO) 3 − Complexes
Author(s) -
Chi Chaoxian,
Wang JiaQi,
Qu Hui,
Li WanLu,
Meng Luyan,
Luo Mingbiao,
Li Jun,
Zhou Mingfei
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201703525
Subject(s) - covalent bond , uranium , chemistry , photodissociation , transition metal , oxidation state , triple bond , chemical bond , crystallography , spectroscopy , infrared spectroscopy , metal , inorganic chemistry , photochemistry , materials science , polymer chemistry , organic chemistry , double bond , metallurgy , catalysis , physics , quantum mechanics
We report the preparation of UFe(CO) 3 − and OUFe(CO) 3 − complexes using a laser‐vaporization supersonic ion source in the gas phase. These compounds were mass‐selected and characterized by infrared photodissociation spectroscopy and state‐of‐the‐art quantum chemical studies. There are unprecedented triple bonds between U 6d/5f and Fe 3d orbitals, featuring one covalent σ bond and two Fe‐to‐U dative π bonds in both complexes. The uranium and iron elements are found to exist in unique formal U(I or III) and Fe(−II) oxidation states, respectively. These findings suggest that there may exist a whole family of stable df–d multiple‐bonded f‐element‐transition‐metal compounds that have not been fully recognized to date.