Open-framework zinc and cobalt phosphates synthesized by the tributylphosphate route

Abstract

By employing tributylphosphate as the source of phosphorus, several open-framework zinc and cobalt phosphates have been prepared hydrothermally. Of the three new zinc phosphates [C6N2H18][Zn(HPO4)(2)], I, has a linear chain structure while [C4N2H14][Zn-5(PO4)(4)(H2O)], II, [NH4][H3O][Zn-4(PO4)(3]2).H2O, III, have three-dimensional structures. Of the three new cobalt phosphates described, [C5N2H14][Co(HPO4)(2)], IV, and [C5N2H14][Co(HPO4)(2)], V, have linear chain structures, while [C4N2H12](3) [CO2(OH)(HPO4)(3)](2), VI, has a complex double chain structure. The study shows that the use of the organophosphate yields a variety of architectures of metal phosphates.