Hydrogen bond and exchange interaction in the (CuSO 4 )(en)·2H 2 O and (CuSO 4 )(en)·2D 2 O organometallic compounds

The influence of the replacement of hydrogen with deuterium in molecules of water of crystallization in the structure of the (CuSO 4 )(en) · 2H 2 O and (CuSO 4 )(en)·2D 2 O organometallic compound molecules on exchange interaction between copper ions was studied. The X-ray structural data and the data on angular anisotropy of the effective g -factor of Cu 2+ ions in both compounds show that distortions of the initial structure caused by deuteration are minimum. A comparative analysis of the width of the exchange coupled EPR lines of the two compounds is indicative of a decrease in the exchange parameter in the deuterated sample, which substantiates the participation of H-bonds in exchange interactions in the systems studied.