Crystal structures, Hirshfeld atom refinements and Hirshfeld surface analyses of tris-(4,5-di-hydro-furan-2-yl)methyl-silane and tris-(4,5-di-hydro-furan-2-yl)phenyl-silane

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

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.

Crystal structures and Hirshfeld surface analyses of bis-(4,5-di-hydro-furan-2-yl)di-methyl-silane and (4,5-di-hydro-furan-2-yl)(meth-yl)di-phenyl-silane

The title compounds, C10H16O2Si (1) and C17H18OSi (2), are classified as di-hydro-furylsilanes, which show great potential as building blocks for various functionalized silanes. They both crystallize in the space group P in the triclinic crystal system. Analyses of the Hirshfeld surfaces show packing-determining inter-actions for both compounds, resulting in a polymeric chain along the [011] for silane 1 and a layered-inter-connected structure along the b-axis direction for silane 2.