Lei Wang, RuiFeng Xue, Ruixin Chen
Mar 1, 2012
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Science China Chemistry
Abstract
Employing 4,4′-trimethylenedipyridine as a template, a new two-dimensional zinc phosphite (4,4′-(C5H4N)2(CH2)3)· [Zn3(HPO3)4] has been prepared at room temperature and characterized by single-crystal X-ray diffraction, FTIR, elemental analysis, powder X-ray diffraction, and thermogravimetric analysis. The compound crystallizes in the monoclinic space group P21/c, with cell parameters, a = 9.3309(19) Å, b = 14.798(3) Å, c = 33.637(7) Å, β = 91.11(3)°, V = 4643.8(16) nm3 and Z = 4. The connectivity of the ZnO4 tetrahedra and HPO3 pseudo pyramids results in infinite corner-sharing 4-membered ring chains as second building units which are further linked by Zn-O-P bonds to form a 2-D layer that with interesting 8-membered ring channels along the [100] direction. The diprotonated 4,4′-trimethylenedipyridine molecules sit in the middle of the layers along the [100] direction and interact with the framework via hydrogen bonds.