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On construction of lead coordination polymers derived from N′-(2-hydroxybenzylidene)nicotinohydrazide via covalent and non-covalent interactions

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Lead(II) and lead(IV) coordination polymers with N′-(2-hydroxybenzylidene)nicotinohydrazide have been synthesized from lead(II) salts, and subsequently characterized by solid-state UV‐Vis‐IR spectroscopy, thermal analysis, and powder and single-crystal X-ray diffraction techniques. The compounds crystallize in the same space group but differ in the oxidation state of lead, composition, conformation of the organic ligand, its charge, and tautomeric form. The coordination network is propagated by the hydrazone anion in the lead(II) metal-organic framework catena-[(μ 2-N-((2-oxidophenyl)methylidene)pyridine-3-carbohydrazonoato-N:N′,O,O′)-lead(II) (1) and by nitrate in a one-dimensional lead(IV) coordination polymer catena-(μ 2-nitrato-O,O)-(nitrato-O,O′)-(salicylaldehydeisonicotinoylhydrazonato-N,N′,O)-lead(IV) nitrate (2). The formation of metal-organic framework of 1 is affected by Pb···π interactions.
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Keywords: Holodirected and homodirected; Lead(II), Lead(IV) coordination polymer; Metal-organic framework; Non-covalent interactions; Pb···π interactions

Document Type: Research Article

Affiliations: Department of X-ray Crystallography and Crystal Chemistry, Institute of General and Ecological Chemistry, Lodz University of Technology, Lodz, Poland

Publication date: January 2, 2014

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