Crystal structures and Hirshfeld surface analyses of tetrakis(4,5-dihydrofuran-2-yl)silane and tetrakis(4,5-dihydrofuran-2-yl)germane

Abstract

The title compounds Si(C4H5O)4 (1) and Ge(C4H5O)4 (2) are dihydrofuryl compounds of silicon and germanium and are useful building blocks for the functionalization of these elements. Both structures crystallize in space group P21/n in the monoclinic crystal system with two molecules in the asymmetric unit: the Si and Ge atoms adopt slightly distorted tetrahedral geometries, while the C4H5O moieties exhibit shallow envelope conformations. Through a Hirshfeld surface analysis of the structures, interactions within the crystal packing could be elucidated: compound 1 features a polymeric chain in the (101) plane via C—H...O hydrogen bonds whereas in 2 C—H...O hydrogen bonds create a polymeric chain in the (010) plane.