pH- and mol-ratio dependent formation of zinc(II) coordination polymers with iminodiacetic acid: Synthesis, spectroscopic, crystal structure and thermal studies

• Published in: Journal of solid state chemistry Vol. 182; no. 10; pp. 2698 - 2706
• Main Authors: Ni, Lu-Bin, Zhang, Rong-Hua, Liu, Qiong-Xin, Xia, Wen-Sheng, Wang, Hongxin, Zhou, Zhao-Hui
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Inc 01-10-2009; Elsevier
• Subjects: AROMATICS; AZAARENES; CHALCOGENIDES; COHERENT SCATTERING; COMPLEXES; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Coordination polymer; Cross-disciplinary physics: materials science; rheology; CRYSTAL STRUCTURE; DIFFRACTION; EMISSION; Exact sciences and technology; HETEROCYCLIC COMPOUNDS; HYDROGEN COMPOUNDS; Iminodiacetate; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LIGANDS; LUMINESCENCE; Materials science; MONOMERS; Nanoscale materials and structures: fabrication and characterization; NMR; NMR SPECTRA; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; Other topics in nanoscale materials and structures; OXIDES; OXYGEN COMPOUNDS; PH VALUE; PHENANTHROLINES; PHOTOLUMINESCENCE; PHOTON EMISSION; Physics; POLYMERS; SCATTERING; SPECTRA; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; SYNTHESIS; WATER; X-RAY DIFFRACTION; Zinc; ZINC COMPLEXES; ZINC COMPOUNDS; ZINC OXIDES; ZnO nanoparticles; NMR; ZnO nanoparticles; Iminodiacetate; Coordination polymer; Zinc; Photoluminescence; Encapsulation; Molecular structure; Polychelate; XRD; Precursor; Monomers; Nanoparticles; Open framework; Hydrogen bonds; Supramolecular structure; Zinc oxide; Nuclear magnetic resonance; Carbon 13; Crystal structure; Stacking sequence; pH effect; Phenanthrolines; Ligands; Nanostructured materials
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2009.06.042

Three novel zinc coordination polymers (NH
4)
n
[Zn(Hida)Cl
2]
n
(
1)
, [Zn(ida)(H
2O)
2]
n
(
2), [Zn(Hida)
2]
n
·4
nH
2O (
3) (H
2ida=iminodiacetic acid) and a monomeric complex [Zn(ida)(phen)(H
2O)]·2H
2O (
4) (phen=1,10-phenanthroline) have been synthesized and characterized by X-ray diffraction methods.
1 and
2 form one-dimensional (1-D) chain structures, whereas
3 exhibits a three-dimensional (3-D) diamondoid framework with an open channel. The mononuclear complex
4 is extended into a 3-D supramolecular architecture through hydrogen bonds and
π–
π stacking. Interestingly, cyclic nonplanar tetrameric water clusters are observed that encapsulated in the 3-D lattice of
4. Based on
1H and
13C NMR observations, there is obvious coordination of complex
2 in solution, while
1 and
3 decompose into free iminodiacetate ligand. Monomer [Zn(ida)(H
2O)
3] (
5) is considered as a possible discrete species from
2. These coordination polymers can serve as good molecular precursors for zinc oxide.
Reaction of zinc salt with iminodiacetic acid afforded three new coordination polymers
1–
3 and a monomer
4, which is dependent on pH value and molar ratio of the reactants.