Issue 41, 2021

Uranyl ion complexes with 2,2′:6′,2′′-terpyridine-4′-carboxylate. Interpenetration of networks involving “expanded ligands”

Abstract

2,2′:6′,2′′-Terpyridine-4′-carboxylic acid (tpycH) has been used as a ligand in the synthesis of four uranyl ion complexes under solvo-hydrothermal conditions. The homometallic complex [(UO2)2(tpyc)(HCOO)(OH)2] (1) contains additional hydroxide and formate anions generated in situ and it crystallizes as a monoperiodic coordination polymer in which uranyl cations are bound to both the carboxylate group and the terpyridine N3 site. Addition of PbII gives the heterometallic complex [UO2Pb(tpyc)(HCOO)2(OH)(H2O)2] (2), in which uranyl is bound to the carboxylate group while lead(II) occupies the N3 site, further hydroxide- and formate-bridging resulting in a diperiodic arrangement. Both complexes [UO2Ni(tpyc)2(OH)(H2O)]·NO3·1.5H2O (3) and [(UO2)2Ni2(tpyc)4(O)(H2O)4]·(NO3)2·6H2O (4) contain the neutral, octahedral Ni(tpyc)2 “expanded ligand” unit, the uranyl cations being bound to the divergent carboxylate groups and to bridging hydroxo or oxo groups. Complex 3 crystallizes as a heavily corrugated diperiodic assembly in which hydroxo-bridged dinuclear secondary building units are the nodes of a network of sql topology. Chiral, diperiodic polymers with the same topology but a different shape and which are involved in twofold parallel interpenetration, are formed in 4.

Graphical abstract: Uranyl ion complexes with 2,2′:6′,2′′-terpyridine-4′-carboxylate. Interpenetration of networks involving “expanded ligands”

Supplementary files

Article information

Article type
Paper
Submitted
08 Ndz 2021
Accepted
28 Ndz 2021
First published
28 Ndz 2021

CrystEngComm, 2021,23, 7305-7313

Uranyl ion complexes with 2,2′:6′,2′′-terpyridine-4′-carboxylate. Interpenetration of networks involving “expanded ligands”

P. Thuéry and J. Harrowfield, CrystEngComm, 2021, 23, 7305 DOI: 10.1039/D1CE01215K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements