1-(2-Methyl-phen-yl)-4,4'-bipyridin-1-ium tetra-fluorido-borate

Claire E Welton; Vladimir N Nesterov; Bradley W Smucker

doi:10.1107/S2414314622002486

1-(2-Methyl-phen-yl)-4,4'-bipyridin-1-ium tetra-fluorido-borate

IUCrdata. 2022 Mar 10;7(Pt 3):x220248. doi: 10.1107/S2414314622002486. eCollection 2022 Mar.

Authors

Claire E Welton¹, Vladimir N Nesterov², Bradley W Smucker¹

Affiliations

¹ Austin College, 900 N Grand, Sherman, TX 75090, USA.
² University of North Texas, 1155 Union Circle, Denton, TX 76203-5070, USA.

Abstract

Crystals of the title compound, C₁₇H₁₅N₂ ⁺·BF₄ ^-, were unexpectedly grown from crystallization attempts of [Pt(4,4'-bpy)₄](BF₄)₂ [Smith et al. (2019 ▸). Comments Inorg. Chem. 39, 188-215] using toluene and aceto-nitrile. The tetra-fluoro-borate anion and the central pyridinium ring of the cation are disordered, with atomic site occupancies close to ½. The tolyl group of the cation has a 75.31 (11)° twist relative to the unsubstituted pyridyl group. This rotation allows for a centrosymmetric dimer of cations with weak hydrogen bonding between the pyridyl nitro-gen atom and a methyl H atom on the neighbouring cation.

Keywords: bipyridinium; crystal structure; hydrogen bond.

Grants and funding

Funding for this research was provided by: National Science Foundation (grant No. 1726652 to UNT); Welch Foundation (grant No. AD-0007 to Austin College).