Issue 41, 2018

Monomeric thorium chalcogenolates with bipyridine and terpyridine ligands

Abstract

Thorium chalcogenolates Th(ER)4 react with 2,2′-bipyridine (bipy) to form complexes with the stoichiometry (bipy)2Th(ER)4 (E = S, Se; R = Ph, C6F5). All four compounds have been isolated and characterized by spectroscopic methods and low-temperature single crystal X-ray diffraction. Two of the products, (bipy)2Th(SC6F5)4 and (bipy)2Th(SeC6F5)4, crystallize with lattice solvent, (bipy)2Th(SPh)4 crystallizes with no lattice solvent, and the selenolate (bipy)2Th(SePh)4 crystallizes in two phases, with and without lattice solvent. In all four compounds the available volume for coordination bounded by the two bipy ligands is large enough to allow significant conformational flexibility of thiolate or selenolate ligands. 77Se NMR confirms that the structures of the selenolate products are the same in pyridine solution and in the solid state. Attempts to prepare analogous derivatives with 2,2′,6′,2′′-terpyridine (terpy) were successful only in the isolation of (terpy)(py)Th(SPh)4, the first terpy compound of thorium. These materials are thermochromic, with color attributed to ligand-to-ligand charge transfer excitations.

Graphical abstract: Monomeric thorium chalcogenolates with bipyridine and terpyridine ligands

Supplementary files

Article information

Article type
Paper
Submitted
21 ጁን 2018
Accepted
21 ሴፕቴ 2018
First published
02 ኦክቶ 2018

Dalton Trans., 2018,47, 14652-14661

Author version available

Monomeric thorium chalcogenolates with bipyridine and terpyridine ligands

M. Ringgold, W. Wu, M. Stuber, A. Y. Kornienko, T. J. Emge and J. G. Brennan, Dalton Trans., 2018, 47, 14652 DOI: 10.1039/C8DT02543F

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