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Zinc and Cadmium Diphenate Coordination Polymers with Conformationally Flexible Dipyridylamide Ligands

Zinc and cadmium diphenate (dip, biphenyl‐2,2′‐dicarboxylate) coordination polymers containing conformationally flexible dipyridylamide ligands show diverse chain and layer topologies as determined by single‐crystal X‐ray diffraction. [Cd(dipH)2(bdin)]n (1) [bdin = N,N′‐(butane‐1,3‐diyl)diisonicotinamide] shows a simple 1D zigzag chain structure. {[Cd(dip)(pdin)(H2O)]·1.25H2O}n (2) [pdin = N,N′‐(propane‐1,3‐diyl)diisonicotinamide] shows bilayer slabs formed by interleaving of (4,4) rectangular grid layers. {[Zn2(dip)2(3‐pna)2]·3H2O}n (3) (3‐pna = 3‐pyridylnicotinamide) manifests a rare 4‐connected 1D ribbon topology. {[Cd(dip)(4‐ppbp)]·2H2O}n (4) [4‐ppbp = propane‐1,3‐diylbis(piperidine‐4,1‐diyl)bis(pyridin‐4‐ylmethanone)] shows a 3,5‐connected layer with (426)(42678) 3,5L2 topology. {[Zn4(dip)4(H2O)2(4‐ppbp)2]·12H2O}n (5) exhibits 2D 3,6‐connected layers with (43)2(466683) kgd topology featuring embedded R(8)A(2) classification 10‐membered water clusters. Compounds 1, 4, and 5 undergo violet or blue‐violet fluorescence upon ultraviolet irradiation. Thermal decomposition behavior of the new phases is also discussed.

Authors:   Brianna L. Martinez, Robert L. LaDuca
Journal:   Zeitschrift für anorganische und allgemeine Chemie
Year:   2017
Pages:   n/a
DOI:   10.1002/zaac.201700183
Publication date:   11-Aug-2017
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