| Abstract |
Reactions of 5-propionamidoisophthalic acid (H(2)L1) and 5-benzamidoisophthalic acid (H2L2) with Zn(NO3)(2)center dot 6H(2)O under different hydrothermal conditions lead to two pairs of Zn(II) compounds, viz. the mononuclear [Zn(L1)(H2O)(3)]center dot H2O (1) and [Zn(L1)(H2O)(3)]center dot 3H(2)O (2), and the 1D polymers [Zn(L-2)(H2O)(2)](n) (3) and [\Zn(L2)(H2O)(2)\center dot 2H(2)O](n) (4). They crystallize in orthorhombic [Pbca (1) and P2(1)2(1)2(1) (3)] or triclinic (P (1) over bar, 2 and 4) systems, and their formation depends on the particular reaction conditions. Compounds 1 and 2, as well as 3 and 4, are solvatomorphs, the latter presenting different 1D metal-organic polymeric chains. All of them act as heterogeneous catalysts for the diastereoselective nitroaldol (Henry) reaction of different aldehydes with nitroalkanes and can be recycled without losing activity. |
