A1 Journal article (refereed)
Ion Pair Binding in the Solid-State with Ditopic Crown Ether Uranyl Salophen Receptors (2016)

Mäkelä, T., Minkkinen, M.-E., & Rissanen, K. (2016). Ion Pair Binding in the Solid-State with Ditopic Crown Ether Uranyl Salophen Receptors. Inorganic Chemistry, 55(3), 1339-1346. https://doi.org/10.1021/acs.inorgchem.5b02780

JYU authors or editors

Mäkelä, Toni
Rissanen, Kari

Publication details

All authors or editors: Mäkelä, Toni; Minkkinen, Miia-Elina; Rissanen, Kari

Journal or series: Inorganic Chemistry

ISSN: 0020-1669

eISSN: 1520-510X

Publication year: 2016

Volume: 55

Issue number: 3

Pages range: 1339-1346

Publisher: American Chemical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1021/acs.inorgchem.5b02780

Publication open access: Not open

Publication channel open access:

Abstract

Two ditopic uranyl salophen receptors with benzo-15-crown-5 and benzo-18-crown-6 units (R1 and R2, respectively) have been synthesized from commercially available starting materials. Comprehensive studies on the solid-state ion pair complexation with various alkali and ammonium halides have been conducted. From the 19 obtained solid-state structures (6 structures with R1, 13 structures with R2), three general interaction motifs I–III have been observed. Interaction motif I has a separated ion pair with the cation coordinated to the crown ether unit, and the anion or oxygen containing solvent molecule coordinated to the uranyl center. The interaction motif II manifests a polymeric structure with a contact ion pair between the uranyl-coordinated anion and cation coordinated in the crown ether in the adjacent receptor. Interaction motif III consists of a more general stacked packing structure of the receptors with or without ion pairs. From the obtained solid-state structures, the complex R2·NaI shows an interesting formation of infinite coordination polymeric structure where the crown ether complexed sodium cations and the O═U═O units of the adjacent receptors form a nearly linear 1-D chains. In the course of this work also the first solid-state structure of uranyl salophen acetate complex was obtained (R2·KAcO).

Keywords: chemical bonds; supramolecular chemistry

Free keywords: uranyl salophen receptors; halides

Fields of science: