Crystal structure of di-μ-tri-hydro-(penta-fluoro-phenyl)-borato-tetra-kis-(tetra-hydro-furan)-disodium

Ryo Tanaka; Takeshi Shiono

doi:10.1107/S2056989019017201

Crystal structure of di-μ-tri-hydro-(penta-fluoro-phenyl)-borato-tetra-kis-(tetra-hydro-furan)-disodium

Acta Crystallogr E Crystallogr Commun. 2020 Jan 7;76(Pt 2):145-147. doi: 10.1107/S2056989019017201. eCollection 2020 Feb 1.

Authors

Ryo Tanaka¹, Takeshi Shiono¹

Affiliation

¹ Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima 739-8527, Japan.

Abstract

The title compound, [Na(μ-C₆F₅BH₃)(C₄H₈O)₂]₂, represents a dimeric structure of sodium and organoborohydride, located about a centre of inversion. The Na⋯B distances of 2.7845 (19) and 2.7494 (18) Å were apparently longer than the Li⋯B distances (2.403-2.537 Å) of the lithium organotri-hydro-borates in the previous reports. Moreover, an inter-action between the sodium atom and one fluorine atom on the 2-position of the benzene ring is observed [Na-F = 2.6373 (12) Å]. In the crystal, the dimeric mol-ecules are stacked along the b-axis via a π-π inter-action between the benzene rings.

Keywords: borohydride; crystal structure; organotrihydroborate; sodium salt.

Grants and funding

This work was funded by Japan Society for the Promotion of Science grant 18K14276.