Jump to main content
Jump to site search

Issue 14, 2018
Previous Article Next Article

Hydrogen bonded networks based on hexarhenium(III) chalcocyanide cluster complexes: structural and photophysical characterization

Author affiliations

Abstract

Two series of isostructural compounds resulting from the combination of the four-fold hydrogen bond donors bisamidinium cations, namely 1-2H+ and 2-2H+, and the anionic chalcocyanide clusters of general formula [Re6Qi8(CN)a6]4− are presented (Q = S or Se; where i and a denote inner and apical position, respectively). 1-2H+ is built upon two imidazolium groups linked together by a –(CH2)2– alkyl chain. 2-2H+ is built upon two hydroxyamidinium groups linked together via a phenyl group and, in consequence, it exhibits a planar geometry. This ionic association leads to either two or three-dimensional hydrogen-bonded networks in the solid state, as confirmed by X-ray crystallographic analysis. The solid-state structures arise from the recognition between the pendant –C[triple bond, length as m-dash]N ligands of the cluster cores and the amidinium H-bond donors. The luminescence properties of the compounds are investigated in the solid state by means of steady-state and time-resolved techniques. Results are discussed and compared with those measured for the parent Cs4[Re6Si8(CN)a6] and Cs4[Re6Sei8(CN)a6] species. The H-bonded networks display featureless deep-red emission bands centered at λem = 722 and 737 nm and average excited-state lifetimes ranging between 11.5 and 14.8 μs, in accordance with the triplet nature of the radiative process. These photoluminescence properties are similar to the Cs+ homologues and are attributed to the [Re6Qi8]2+ emitting core.

Graphical abstract: Hydrogen bonded networks based on hexarhenium(iii) chalcocyanide cluster complexes: structural and photophysical characterization

Back to tab navigation

Supplementary files

Publication details

The article was received on 10 May 2018, accepted on 04 Jun 2018 and first published on 21 Jun 2018


Article type: Paper
DOI: 10.1039/C8NJ02310G
Citation: New J. Chem., 2018,42, 11888-11895
  •   Request permissions

    Hydrogen bonded networks based on hexarhenium(III) chalcocyanide cluster complexes: structural and photophysical characterization

    A. Ledneva, S. Ferlay, N. G. Naumov, M. Mauro, S. Cordier, N. Kyritsakas and M. W. Hosseini, New J. Chem., 2018, 42, 11888
    DOI: 10.1039/C8NJ02310G

Search articles by author

Spotlight

Advertisements