INTERCALATION OF 1,4-DIAZABICYCLO[2.2.2]OCTANE (DABCO) IN THE HSB(PO4)2.2.3H2O PHOSPHATOANTIMONIC ACID

1,4-Diazabicyclo[2.2.2]octane (DABCO) can be intercalated in HSb(PO4)2 .2.3H2O (noted H1) to give materials having the final formulation HSb( PO4)2(DABCO)0.2.2H2O noted H1DABCO0.2, HSb(PO4)2(DABCO)0.5.1.5H2O note d H1DABCO0.5 and HSb(PO4)2(DABCO)0.8.3.5H2O noted H1DABCO0.8. These co mpounds are characterized by X-ray diffraction, I.R. spectroscopy, MAS NMR spectroscopy and TGA measurements, giving evidence of a monolayer of intercalated amine in the second compound while a double layer is probably obtained in the latter compound. DABCO intercalates show a po or activity in the condensation reaction between aromatic aldehydes an d acrylic esters compared with the high conversion rate usually observ ed with pure DABCO in homogeneous medium.