CRYSTAL STRUCTURE OF COORDINATION POLYMERS BASED ON A HETEROMETALLIC CARBOXYLATE COMPLEX

Three new metal-organic frameworks [Zn(Hibdc)(2)]center dot DMF (1), (H2NMe (2))[Li2Zn3(H2O)(dmf)(Hbtc)(3)(btc)]center dot 6DMF center dot H2O(2), and [Li2Zn2(H2O)(2) (bpp)(bpdc)(3)]center dot 7DMF (3) are obtained in the interaction of heterometallic carboxylate complex [Li2Zn2(piv)(6)(py)(2)] with isophthalic (H(2)ibdc) and trimesic (H(3)btc) acids and in the presence of both 4,4'-biphenyldicarboxylic acid (H(2)bpdc) and 4,4'-bispyridylpropane (bpp). The structure of the obtained compounds is determined by the single crystal X-ray diffraction analysis. In the reactions studied the structure of the initial {Li2Zn2} fragment is not retained. A complicated fragmentation of this four-nuclear block occurs, including the formation of binuclear heterometallic dimers {LiZn}.