Syntheses, structure and intercalation properties of low-dimensional phenylphosphonates, A(HO<inf>3</inf>PC<inf>6</inf>H<inf>5</inf>)(H <inf>2</inf>O<inf>3</inf>PC<inf>6</inf>H<inf>5</inf>) (A = alkali metal, NH <inf>4</inf> and TI)

Seven new low-dimensional phenylphosphonates, A(H-O3PC 6H5)(H2O3PC6H 5) [A = Li (1), Na (2), K (3), Rb (4), Cs (5), NH4 (6) and T1 (7)], have been synthesized and characterized by X-ray diffraction, spectroscopic and thermal studies. They crystallize in triclinic unit cells with two formula units and have approximately planar arrangement of A+ ions, coordinated to oxygen atoms of phenylphosphonates, on both sides. Compounds 1 and 6 are one-dimensional, whereas others are two-dimensional. All of them undergo room-temperature intercalation reactions with primary n-alk-ylamines and ammonia. Single crystal X-ray structures of compounds 1, 2 and 6 have been determined. © Wiley-VCH Verlag GmbH & Co. KGaA, 2005.