Abstract
A novel three-dimensional organically templated zincophosphite, [C 6N 2H 18] · [Zn 3(HPO 3) 4], was synthesized under milder hydrothermal conditions and structurally characterized by single-crystal X-ray diffraction, differential thermal-thermogravimetric analysis, powder X-ray diffraction, 31P MAS NMR spectrum, and IR spectroscopy. It crystallizes in the monoclinic system, space group C2/ c with cell parameters: a = 8.7820(4) Å, b = 14.9417(7) Å, c = 15.4943(5) Å, β = 92.940(2)°, and Z = 4. The structure consists of a network of strictly alternating ZnO 4 tetrahedra and [ HPO 3 2 - ] pseudo-pyramid, forming 4-membered ring chains. The structure has a 4.8.16-net and 8- and 16-membered ring channels where completely protonated N, N, N′, N′-tetramethylenediamine cations are encapsulated. The structure is stabilized by template-to-framework hydrogen bonding. In phosphites system, this compound possesses extra-large-pores.
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