Luminescent open-framework antiferromagnet -: Hydrothermal syntheses, structures, and luminescent and magnetic properties of two novel coordination polymers:: [Zn(pdoa)(bipy)]n and {[Mn(pdoa)(bipy)](bipy)n [pdoa=2,2′-(1,3-phenylenedioxy)bis(acetate);: bipy=4,4′-bipyridine]

Two coordination polymers of mixed ligands, 2,2'-(1,3-phenylenedioxy)bis(acetate) (pdoa) and 4,4'-bipyridine (bipy), namely [Zn(pdoa)(bipy)](n) (1) and {[Mn(pdoa)(bipy)](bipy)}(n) (2), have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction and IR spectra. Complex 1 crystallizes in the triclinic space group P (1) over bar with a = 6.8826(18) angstrom, b = 11.202(3) angstrom, c = 12.295(3) angstrom, alpha = 86.854(4)degrees, beta = 85.759(5)degrees, gamma = 72.629(4)degrees and is a novel folded-paper-shaped coordination compound with polymeric sheets formed by the five-coordinate Zn-II centers and bridging pdoa and bipy. Complex 2 crystallizes in the monoclinic space group P2(1)/c with a = 11.507(2) angstrom, b = 23.254(5) angstrom, c = 9.8710(19) angstrom, beta = 96.418(4)degrees and exhibits a robust three-dimensional framework with nanosized rectangular channels (11.627 x 11.507 angstrom). They both display blue fluorescent emission and could be considered as new luminescent materials. In addition, the magnetic properties of complex 2 were investigated and the magnetic susceptibility data were rationally fitted with g = 2.072(5), J = -1.11(4)cm(-1), and zJ' = -0.161(7) cm(-1), showing it is an unprecedented luminescent open-framework antiferromagnet. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006).