The Synthesis and Characterization of a New Layered Chlorozincophosphate Zn(HPO₄)Cl[C₄H₁₀N]

Abstract

Along a systematic study of open-framework materials aiming at producing new molecular sieves, we characterized a new zincophosphate Zn(HPO₄)Cl[C₄H₁₀N]. It was synthesized under mild conditions (r.t.) in the presence of pyrrolidinium as an organic-structure directing agent. The structure of this compound, determinated by single crystal X-ray diffraction, consists of anionic parallel [Zn(HPO₄)Cl]⁻ sheets alternating with thick slabs of organic molecules (C₄H₁₀N)⁺. These latters are linked to the anionic sheets through hydrogen bonds. Zn(HPO₄)Cl[C₄H₁₀N] crystallizes in the monoclinic system and the space group C2/c (No. 9) with cell parameters a = 24,83(9), b = 9,258(5), c = 8.778(3), β = 110,45(4), Z = 8, V = 1891.0(14) Åt³, R = 0.045, and R_w = 0.07. Solid state ³¹P and ¹³C MAS NMR spectroscopies are in agreement with the X-ray structure.

Keywords:

• Layered compounds
• NMR spectroscopy
• pyrrolidine (organic template)
• X-ray diffraction

Acknowledgments

We would like to thank the Ministry of Scientific Research Technology and Competing Development of Tunisia for its' financial support.

Notes

^aAn oxygen atom of the OH group.