TWO–DIMENSIONAL COORDINATION POLYMERS BASED ON PYRIDINE–CONTAINING CATIONS OF Cu(II) AND Ni(II) AND 1,3,5–BENZENETRICARBOXYLATE ANION AND THEIR SUPRAMOLECULAR STRUCTURE
L. V. Tsymbal1, I. L. Andriichuk1, Ya. D. Lampeka1, V. B. Arion2
1Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, Ukraine, Kiev
2Institute of Inorganic Chemistry, Vienna, Austria
Keywords: coordination compounds, nickel(II), copper(II), crystal structure, two-dimensional coordination polymers, non-covalent interactions, supramolecular structure
Abstract
New coordination compounds based on 1,3,5–benzenetricarboxylate (btc3–) and complex cations of copper(II) and nickel(II) with monodentate ligands {{[Cu(py)3]3(btc)2}×4,5H2O}n (1) and {[Ni(py)3(H2O)]3(btc)2}n (2) were obtained. The molecular and crystal structures of these compounds and their isomorphism were determined by X–ray diffraction analysis. Crystals of 1 and 2 are characterized by a layered structure due to the stacking of two-dimensional coordination-polymer layers interacting with each other through С–H···π non-covalent interactions and С–H···О weak hydrogen bonds. It is shown that these compounds are potentially highly porous materials with coordinatively unsaturated metal ions (Lewis acid sites).
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