FORMATION OF 2ND-STAGE INTERMEDIATES IN ANION-EXCHANGE INTERCALATION REACTIONS OF THE LAYERED DOUBLE HYDROXIDE [LIAL2(OH)(6)]CL-CENTER-DOT-H2O AS OBSERVED BY TIME-RESOLVED, IN-SITU X-RAY-DIFFRACTION

Time-resolved in situ energy-dispersive X-ray diffraction studies on t he intercalation of dicarboxylate anions (Na2C4H4O4, Na2C6H8O4, Na-2-t rans-C4H2O4, Na-2-cis-C4H2O4, Na-2-L-C4H4O5, Na-2-1,2-C8H4O4, Na-2-1,4 -C8H4O4) into [LiAl2(OH)(6)]Cl . H2O have revealed the rapid formation of a second-stage intermediate phase that subsequently transforms int o a phase-pure fully ion-exchanged product. These intermediates can be isolated as pure crystalline phases by reaction of the host lattice w ith stoichoimetric amounts of the dicarboxylate anions.