title: A tetravalent cerium complex containing a Ce=O bond.
abstract: Whereas terminal oxo complexes of transition and actinide elements are well documented, analogous lanthanide complexes have not been reported to date. Herein, we report the synthesis and structure of a cerium(IV) oxo complex, [CeO(LOEt )2 (H2 O)]⋅MeC(O)NH2 (1; LOEt (-) =[Co(η(5) -C5 H5 ){P(O)(OEt)2 }3 ](-) ), featuring a short CeO bond (1.857(3) Å). DFT calculations indicate that the hydrogen bond to cocrystallized acetamide plays a key role in stabilizing the CeO moiety of 1 in the solid state. Complex 1 exhibits oxidizing and nucleophilic reactivity.
authors.affiliation: Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong (China).
authors.forename: Yat-Ming
authors.initials: YM
authors.lastname: So
authors.forename: Guo-Cang
authors.initials: GC
authors.lastname: Wang
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.forename: Herman H-Y
authors.initials: HH
authors.lastname: Sung
authors.forename: Ian D
authors.initials: ID
authors.lastname: Williams
authors.forename: Zhenyang
authors.initials: Z
authors.lastname: Lin
authors.forename: Wa-Hung
authors.initials: WH
authors.lastname: Leung
mesh_terms: D000081:Acetamides / Q000737:chemistry; D002563:Cerium / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008968:Molecular Conformation; D010100:Oxygen / Q000737:chemistry; D011789:Quantum Theory
chemical_list: D000081:Acetamides; D056831:Coordination Complexes; D002563:Cerium; C030686:acetamide; D010100:Oxygen
keywords: cerium; crystal structure; density functional calculations; multiple bonds