Divalent Nickel and Monovalent Copper Pseudohalide Coordination Polymers Incorporating the Kinked Organodiimine 4,4′‐Dipyridylamine: From a (4,4)‐Type Lamellar Motif to an Unprecedented Staircase Morphology |
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| Authors: | Warren R. Knapp Justin G. Thomas David P. Martin Maxwell A. Braverman Ryan J. Trovitch Robert L. LaDuca Dr. |
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| Affiliation: | 1. East Lansing, MI / USA, Michigan State University, Lyman Briggs School of Science and Department of Chemistry;2. Wilkes‐Barre, PA / USA, King's College, Department of Chemistry and Physics;3. Wilkes‐Barre, PA / USA, King's College, Department of Chemistry and PhysicsLyman Briggs School of Science, E‐30 Holmes Hall, Michigan State University, East Lansing, MI 48825 USA |
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| Abstract: | The divalent nickel isothiocyanate coordination polymer [Ni(NCS)2(dpa)2] ( 1 ) has been prepared in high yield via the hydrothermal combination of Ni(SCN)2 with the kinked tethering ligand 4,4′‐dipyridylamine (dpa), and characterized via single crystal X‐ray diffraction, infrared spectroscopy and elemental and thermal analysis. 1 manifests offset stacked 2‐D (4,4)‐topology layered motifs organized into 3‐D via interlamellar supramolecular N–H···S hydrogen bonding. Hydrothermal reaction of CuCl2·2H2O, NaSCN, and dpa afforded the copper (I) thiocyanate coordination polymer [Cu2(SCN)2(dpa)] ( 2 ), whose single crystal structure revealed unprecedented 1‐D [Cu2(SCN)2] zig‐zag staircase motifs constructed via connection of the Cu2S2 “stair steps” at their adjacent sides via μ3‐1,1,3‐SCN anions. The 3‐D structure of 2 is propagated by covalent linkage of each [Cu2(SCN)2] staircase to four others through dipodal dpa tethering ligands, enhanced by N–H···S and C–H···S supramolecular interactions to two other staircases. |
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| Keywords: | Nickel Copper Isothiocyanate Thiocyanate Coordination polymer Hydrothermal synthesis Crystal structure Thermogravimetric analysis |
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