Peer-Reviewed Journal Details
Mandatory Fields
Tayade, SB;Markad, D;Kumbhar, AS;Erxleben, A;Chakravarty, D
2019
August
Acta Crystallographica Section C-Structural Chemistry
Coordination polymers of Cd-II and Pb-II derived from bipyridine-glycoluril: influence of metal-ion size and counter-ions
Published
Optional Fields
HYDROGEN-BOND ORGANIC FRAMEWORKS SERIES RADII DIMENSIONALITY DICARBOXYLATE DIVERSITY NETWORKS LIGANDS LINKER
75
1084
Two new one-dimensional (1D) coordination polymers (CPs), namely catenapoly[[[aquacadmium(II)]-bis(mu-4b,5,7,7a-tetrahydro-4b, 7a-epiminomethanoimino-6H- imidazo[4,5-f][1,10] phenanthroline-6,13-dione)] bis(perchlorate) dihydrate], {[Cd(C14H10N6O2)(2)(H2O)](ClO4)(2)center dot 2H(2)O}(n) or {[Cd(BPG)(2)(H2O)](ClO4)(2)center dot 2H(2)O}(n), 1, and catena-poly[[lead(II)-bis(mu-4b, 5,7,7a-tetrahydro-4b, 7a-epiminomethanoimino-6H-imidazo[4,5-f][1,10] phenanthroline-6,13-dione)] bis(perchlorate) dihydrate], {[Pb(C14H10N6O2)(2)](ClO4)(2)center dot 2H(2)O}(n) or {[Pb(BPG)(2)](ClO4)(2)center dot 2H(2)O}(n), 2, have been synthesized using bipyridine-glycoluril (BPG; systematic name: 4b, 5,7,7a-tetrahydro-4b, 7a-epiminomethanoimino-6H-imidazo[4,5-f][1,10] phenanthroline-6,13-dione), a urea-fused tecton, in a mixed-solvent system. The Cd-II ion in 1 is heptacoordinated and the Pb II ion in 2 is hexacoordinated, with the Cd-II ion adopting a pentagonal bipyramidal geometry and the Pb-II ion adopting a distorted octahedral geometry. Both CPs form infinite linear chain structures which are hydrogen bonded to each other leading to the formation of three-dimensional supramolecular network structures. Topological analysis of CPs 1 and 2 reveals that the structures exhibit 1D chain-like arrangements in an AB-AB sequence and shows platonic uniform 2-connected uninodal topologies. Furthermore, a comparative analysis of a series of structures based on the BPG ligand indicates that the size of the metal ion and the types of counter-ions used have a great influence on the resulting frameworks and properties.
2053-2296
10.1107/S2053229619008325
Grant Details
Publication Themes