Issue 26, 2016

Metal exchange study of pyrogallol[4]arene based dimers

Abstract

The synthesis, the single-crystal X-ray structure, and a metal-exchange study of a zinc-seamed C-hexylpyrogallol[4]arene/PgC6Zn dimer are reported. The packing arrangement of the PgC6Zn dimer shows interdigitation between the C-hexyl tails. Neighboring dimeric nanocapsules are slightly offset with respect to each other, with CH⋯π interactions between the hexyl tails and the external pyridine ligands. In situ metal exchange with nickel nitrate does not result in expulsion of zinc metal centers from a pre-formed dimer, a result suggesting a framework robustness that may make formation of (magnetically interesting) mixed-metal dimers difficult. The suggested robustness of zinc-seamed pyrogallol[4]arene-based dimers is supported by quantum chemical calculations on related PgC0Zn and PgC3Zn dimers.

Graphical abstract: Metal exchange study of pyrogallol[4]arene based dimers

Supplementary files

Article information

Article type
Communication
Submitted
21 Mar 2016
Accepted
13 May 2016
First published
16 May 2016

CrystEngComm, 2016,18, 4909-4913

Metal exchange study of pyrogallol[4]arene based dimers

H. Kumari, C. M. Mayhan, C. L. Barnes, C. A. Deakyne and J. L. Atwood, CrystEngComm, 2016, 18, 4909 DOI: 10.1039/C6CE00639F

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