A new 3D supramolecular Zn(II) compound: Crystal structure and important role in treatment of pulpitis

An innovative thermostable 2-D layered Zn(II) compound, chemical terms are written as [Zn(3-pysa)(2)(H2O)(2)](n) (1, 3-Hpysa = 3-pyridinesulfonic acid), has been generated from the solvothermal reactions of 3-Hpysa and Zn(NO3)(2)middot6H(2)O. Its single crystal analysis was implemented via the single crystal X-ray diffraction analysis together with the powder X-ray diffraction, elemental analysis and thermogravimetric analysis. The crystal framework is of monoclinic P2(1)/n space group and its crystal cell figures: a = 7.7499(5), b = 10.9923(6), c = 8.3430(5) & Aring;, alpha = 90, beta = 96.924(6), gamma = 90 degrees, V = 705.55(7) & Aring;(3), Z = 4. The 2D layers were finally combined to a 3-D supramolecular conformation through intermolecular H-bonds existing between coordinated H2O molecules and sulfonate oxygen atoms from adjacent layer. Its practical role in pulpitis treatment was estimated and the relevant mechanism was studied in the meantime.