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Intermolecular Pb…N interactions in lead(II) dimers producing a supramolecular two‐dimensional metal–organic compound: bis[μ 2 ‐ N ′‐(2‐oxidobenzylidene)benzohydrazidato‐κ 4 O : O , N ′, O ′]dilead(II)
Author(s) -
Schwade Vânia Denise,
Faoro Eliandro,
Schulz Lang Ernesto
Publication year - 2016
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229616008755
Subject(s) - chemistry , supramolecular chemistry , dimer , ligand (biochemistry) , crystal structure , protonation , crystallography , schiff base , intermolecular force , triethylamine , metal , stereochemistry , salicylaldehyde , molecule , ion , biochemistry , receptor , organic chemistry
Aroylhydrazones of ortho ‐hydroxy aldehydes are Schiff base ligands that typically coordinate as a chelate in an O , N , O ′‐manner. Dinuclear complexes are normally observed, with the phenolate O atom acting as the bridging atom. The switchable protonation state of the tridentate N ′‐(2‐hydroxybenzylidene)benzohydrazide (H 2 sabhz) ligand can lead to variations in the resulting supramolecular structure. The title compound, [Pb 2 (C 14 H 10 N 2 O 2 ) 2 ], was prepared by the reaction of [Pb(OAc) 2 ]·3H 2 O (OAc is acetate) with the benzoylhydrazone derivative of salicylaldehyde, i.e. H 2 sabhz, in the presence of triethylamine in methanol. In the crystal structure, each Pb II atom of the dimer has an NO 3 coordination environment, with one sabhz ligand coordinating in an O , N , O ′‐manner and with the second sabhz ligand coordinating via the bridging phenolate O atom, since the dimers are located on a centre of inversion. It has been found that the dimers are connected by Pb…N interactions, resulting in a two‐dimensional supramolecular network which shows the [3 2 .5 2 ,3.5 3 ] net topology. The s 2 electron pair of the Pb II ion clearly influences the observed intermolecular interactions.