Chiral wheel anions of copper(ii)-early lanthanides(iii) with high optical-limiting properties†
Abstract
A new family of chiral wheel anions {CuII22LnIII4} (La, Ce, Pr, Nd and Sm) was obtained from aqueous solution by the use of tartrate anions. It was found that these compounds, {CuII22SmIII4} in particular, exhibit remarkable optical-limiting properties.