Intercalation of Alcohols in Ag Sulfonates: Topotactic Behavior Despite Flexible Layers

This article presents the inaugural intercalation study of a layered metal sulfonate network. Silver triflate forms
intercalation complexes with straight chain primary alcohols from ethanol (C2H5OH) to eicosanol (C20H41OH). Single-crystal data for the EtOH adduct, 1, are presented which show that the intercalation is coordinative to Ag. In
contrast to many other layered hosts, no preheating of Ag triflate is required to liberate a coordination site for
intercalation to take place, owing to the ability of the triflate ion to reorient. Crystal structure parameters for 1: 
C4H6F6S2O7Ag2, a = 5.345(7) Å, b = 11.310(2) Å, c = 12.004(2) Å, α = 116.87(1)°, β = 90.46(1)°, γ =
99.59(1)°, triclinic, space group P1̄, Z = 2. Intercalate 1 presents the triflate ion in an unprecedented μ5-coordination
mode. PXRD data on the family of complexes show that the intercalation is topotactic, as verified by the linear
increase in d-spacing and calculated c-axis lengths for the intercalates, with increasing chain length. The data also
show that the alcohol intercalates adopt an interdigitated rather than bilayer arrangement.