Crystal structures and Hirshfeld surface analyses of tetra-kis-(4,5-di-hydro-furan-2-yl)silane and tetra-kis-(4,5-di-hydro-furan-2-yl)germane

Arnold Ressel; Anna Krupp; Carsten Strohmann

doi:10.1107/S2056989023003158

Crystal structures and Hirshfeld surface analyses of tetra-kis-(4,5-di-hydro-furan-2-yl)silane and tetra-kis-(4,5-di-hydro-furan-2-yl)germane

Acta Crystallogr E Crystallogr Commun. 2023 Apr 14;79(Pt 5):458-464. doi: 10.1107/S2056989023003158. eCollection 2023 Apr 1.

Authors

Arnold Ressel¹, Anna Krupp¹, Carsten Strohmann¹

Affiliation

¹ Technische Universität Dortmund, Fakultät für Chemie und Chemische Biologie, Anorganische Chemie, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany.

Abstract

The title compounds Si(C₄H₅O)₄ (1) and Ge(C₄H₅O)₄ (2) are di-hydro-furyl 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 mol-ecules in the asymmetric unit: the Si and Ge atoms adopt slightly distorted tetra-hedral geometries, while the C₄H₅O moieties exhibit shallow envelope conformations. Through a Hirshfeld surface analysis of the structures, inter-actions 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.

Keywords: Hirshfeld surface analysis; crystal structure; dihydrofuranyl groups (DHF); dihydrofurylgermane; dihydrofurylsilan.