Unprecedented pairs of uranium (iv/v) hydroxido and (iv/v/vi) oxido complexes supported by a seven-coordinate cyclen-anchored tris-aryloxide ligand.

ABSTRACT: We present the synthesis and reactivity of a newly developed, cyclen-based tris-aryloxide ligand precursor, namely cyclen(Me)( ^t-Bu,t-BuArOH)₃, and its coordination chemistry to uranium. The corresponding uranium(iii) complex [U^III((OAr ^t-Bu,t-Bu)₃(Me)cyclen)] (1) was characterized by ¹H NMR analysis, CHN elemental analysis and UV/vis/NIR electronic absorption spectroscopy. Since no single-crystals suitable for X-ray diffraction analysis could be obtained from this precursor, 1 was oxidized with methylene chloride or silver fluoride to yield [(cyclen(Me)( ^t-Bu,t-BuArO)₃)U^IV(X)] (X = Cl (2), F (3)), which were unambiguously characterized and successful

SUBMITTER: Loffler ST 

PROVIDER: S-EPMC9533418 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature