Abstract
In the reaction of a heterometallic complex of the composition [Li2Zn2(piv)(6)(py)(2)] (piv(-) is the pivalate anion, py is pyridine) with 2,5-pyridinedicarboxylic acid (H(2)pdc) and 4,4'-bipyridyl (4,4'-bpy), molecular complex [Zn(MeOH)(2)(Hpdc)(2)]center dot 4,4'-bpy (1) is obtained. In the interaction of the same complex with another dicarboxylic acid (1,4-naphthalenedicarboxylic (H(2)ndc)) and also in the presence of 4,4'-bipyridyl, heterometallic metal-organic framework (MOF) [{LiZn}(4)(4,4'-bpy)(dmf)(2)(ndc)(6)]center dot 3DMF center dot H2O (2) is formed. In the interaction of a polymeric pivalate complex of the composition [Cd2Eu(piv)(7)(H2O)(2)]center dot nMeCN with thiophenedicarboxylic acid (H(2)tdc), layered MOF (Me2NH2)(2)[Cd(tdc)(2)]center dot 1.5DMF center dot H2O is obtained (3). The structures of 1-3 are determined by single crystal X-ray diffraction. In the reactions studied, the structures of initial heterometallic {Li2Zn2} and {Cd2Eu} moieties is partially retained only for MOF 2. This coordination polymer is of interest for the study of luminescent and sorption properties. In the other cases, the heterometallic unit is fragmented, which results in the formation of a final product involving only one of two metal cations contained in the initial unit.