A Polymeric Silver Lutidine Tetrafluoroborate Compound, [Ag( lut )2(µ4-BF4)]N, With Weak μ4-Tetrafluoroborate Coordination to Silver

Abstract

Silver tetrafluoroborate reacts with 2,6-lutidine ( lut ), in dichloromethane solution, to form the polymeric compound [Ag( lut )2(�4-BF4)]n. The polymeric structure is comprised of [Ag( lut )2]+ units each of which is connected by two bidentate links to two [�4-BF4]-anions. The compound crystallizes in the tetragonal space group I41/acd with a 15 .O69(4) and c l4.391(3) �. A full-matrix least-squares refinement on 271 reflections, with I ≥ 2.5σ(I), converged with final R 0.027 and Rw 0.025. The complex exhibits an unusual splitting of the BF4 v3 mode into six peaks which has been interpreted as three doublets arising from coupling between the BF4- anions attached to the same silver atom.