Luminescent zinc terephthalate coordination polymers with pyridylnicotinamide ligands: Effect of added base and nitrogen donor disposition on topology

作者：Goldsworthy Jessica S; Staples Richard J; LaDuca Robert L^*

来源：Journal of Molecular Structure, 2014, 1062: 116-124.

DOI：10.1016/j.molstruc.2014.01.042

• Zinc
• Terephthalate
• Crystal structure
• Coordination polymer
• Luminescence
• Dipyridylamide

Hydrothermal reaction of zinc nitrate, potassium terephthalate (K(2)tere), and 3-pyridylnicotinamide (3-pna) or 4-pyridylnicotinamide (4-pna) afforded coordination polymers with different dimensionality depending on nitrogen donor disposition and the initial pH of the reaction mixture. {[Zn(tere)(3-pna)(2)(H2O)(2)]center dot 2H(2)O}(n) (1) was prepared in the presence of aqueous NaOH, and manifests 1-D coordination polymer chains with monodentate 3-pna ligands. A mixture of {[Zn(tere)(3-pna)]center dot 3H(2)O}(n) (2) and {[Zn-4(tere)(3)(OH)(2)(3-Pna)(2)]center dot 2H(2)O}(n) (3) was prepared by performing a similar reaction in the absence of extra base. Compound 2 shows a 2-D (6,3) hexagonal grid topology with very tight interdigitation, while 3 has a 2-fold interpenetrated 3-D pcu network built from {Zn-4(OCO)(2)(OH)(2)} centrosymmetric tetrameric nodes. {[Zn(tere)(4-pna)]center dot H2O}(n) (4) has parallel 2-fold interpenetrated sawtooth layer motifs. Luminescent and thermal decomposition properties are also discussed.

• 出版日期2014-3-24