Zinc maleate and fumarate coordination polymers containing hydrogen-bonding capable organodiimines featuring ligand dependent in situcis-trans isomerization |
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| Authors: | Gregory A Farnum Laura K Sposato Robert L LaDuca |
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| Institution: | a Lyman Briggs College and Department of Chemistry, Michigan State University, East Lansing, MI 48825 USA
b Department of Chemistry and Physics, King’s College, Wilkes-Barre, PA 18711, USA |
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| Abstract: | Solution phase reaction at ambient temperature of zinc nitrate, maleic acid and 4,4′-dipyridylamine (dpa) afforded {Zn2(maleate)2(dpa)2]·5H2O}n (1), which displayed parallel (4,4)-grid like coordination polymer layers interdigitated into double layer slab motifs via hydrogen bonding. A similar reaction employing bis(4-pyridylmethyl)piperazine (bpmp) caused in situcis-trans isomerization of maleic acid to fumarate, and generation of Zn(fumarate)(bpmp)(H2O)2]n (2). Compound 2 also manifested (4,4)-grid coordination polymer layers similar to those in 1; however, the larger apertures in 2 permit 2d + 2d → 3D mutually inclined interpenetration. Thermogravimetric and luminescence studies are also reported for 1 and 2. |
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| Keywords: | Zinc Maleate Fumarate Coordination polymer Isomerization Imine |
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