Structure of µ-fluoro-bis[bis(2,2′-bipyridyl)fluoronickel(<scp>II</scp>)] fluoride–ethanol (1/2) trihydrate, revealing several unique features including strong hydrogen bonds between fluoride ions and ethanol molecules

Abstract

The crystal structure of the compound [(bipy)2FNi–F–NiF(bipy)2]+[F(EtOH)2(H2O)2]–·H2O (bipy = 2,2′-bipyridine) has been determined, providing examples of three different and rare fluoride environments: ligand, bridging, and ethanol-solvated ion. The ligand fluorides are linked by hydrogen bonding to the same water molecule and the torsion angle between them is 65°. The lattice fluoride ion is hydrogen bonded strongly to two ethanol molecules with R(F ⋯ O)= 2.579 Å and to two water molecules with R(F ⋯ O)= 2.709 Å.