What is it about?

The compression behavior of [Rb(18-crown-6)][SbCl6] crystal under high pressure in GPa range was investigated in a diamond anvil cell (DAC). The nonlinear relationship between unit-cell parameters under high pressure is attributed to the influence of reduced intermolecular H⋯Cl contacts under pressure. For the Rb atom to penetrate into the center of the crown ether cavity in [Rb(18-crown-6)][SbCl6], it is necessary to apply a pressure of about 2.5 GPa to disrupt the balance of atomic forces in the crystal.

Featured Image

Why is it important?

This sample serves as a compression model demonstrating the influence of both attractive and repulsive forces on the change in unit-cell parameters under pressure. Of key interest is the tuning of crystal properties under high pressure.


This work is not only a continuation of our series of works devoted to the structure of crown ether complexes, but also a fresh look at the problems of structural chemistry of alkali metal complexes with crown ethers from a different angle.

Eduard Rusanov
Department of Chemistry and Applied Biosciences, ETH Zürich

Read the Original

This page is a summary of: Attractive and repulsive forces in a crystal of [Rb(18-crown-6)][SbCl6] under high pressure, Acta Crystallographica Section B Structural Science Crystal Engineering and Materials, March 2024, International Union of Crystallography,
DOI: 10.1107/s2052520624001586.
You can read the full text:



The following have contributed to this page