Note. Intercalation of alkylamines into tin(IV) bis(hydrogenphosphate) monohydrate

Abstract

Alkylamines have been intercalated into Sn(HPO₄)₂·H₂O by exposing the phosphate to the vapour or the pure liquid of the amines. n-Alkylamines are intercalated as a bimolecular film of extended molecules with the carbon chain backbone roughly inclined at 66° to the plane of the sheet. Infrared spectra and thermal data suggest that the alkylamines exist as alkylammonium ions within the layer of Sn(HPO₄)₂·H₂O. The intercalate Sn(C₄H₉NH₂)₂(HPO₄)₂·H₂O readily exchanges transition-metal ions.