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One-dimensional chain structures of hexanuclear uranium(iv) clusters bridged by formate ligands.

ABSTRACT: Three one-dimensional chain structures of uranium(iv) hexanuclear clusters have been synthesized under hydrothermal/solvothermal conditions. Crystallographic studies disclose that the structures of [U₆O₄(OH)₄(HCOO)₁₂(H₂O)]·3H₂O (1a), [U₆O₄(OH)₄(HCOO)₁₂(HCOOH)(H₂O)]·3H₂O (1b) and (H₆C₅N)₂[U₆O₄(OH)₄(HCOO)₁₄(H₅C₅N)] (2) contain a U(iv) hexanulear core [U₆(μ ₃-OH)₄(μ ₃-O)₄]¹²⁺ which is decorated by terminal HCOO^- ligands and water (1a, 1b), HCOOH (1b) or pyridine molecules (2). These hexanuclear U(iv) clusters are further linked into zig-zag 1-D chain structures via bridging HCOO^- ligands. UV-vis-NIR spectra, together with bond valence calculations, indicate that all U atoms in three compounds exist as U(iv). Magnetic susceptibility data reveal that compound 2 exhibits paramagnetic characteristics.

SUBMITTER: Ling J

PROVIDER: S-EPMC9087207 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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One-dimensional chain structures of hexanuclear uranium(iv) clusters bridged by formate ligands.

Ling Jie J Lu Huangjie H Wang Yaxing Y Johnson Kenndra K Wang Shuao S

RSC advances 20181012 61

Three one-dimensional chain structures of uranium(iv) hexanuclear clusters have been synthesized under hydrothermal/solvothermal conditions. Crystallographic studies disclose that the structures of [U6O4(OH)4(HCOO)12(H2O)]·3H2O (1a), [U6O4(OH)4(HCOO)12(HCOOH)(H2O)]·3H2O (1b) and (H6C5N)2[U6O4(OH)4(HCO ...[more]

PMID: 35547079

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