Biswarup Chakraborty, Subhadip Maiti, T. Paine
Mar 22, 2013
Citations
0
Influential Citations
5
Citations
Journal
Polyhedron
Abstract
Three one-dimensional silver(I) coordination polymers {[AgL 1 ]NO 3 } n ( 1 ), {[AgL 2 ]ClO 4 } n ( 2 ) and {[AgL 2 ]NO 3 } n ( 2a ), where L 1 (pyridin-2-ylmethylene-(4-{[(pyridin-2-ylmethylene)-amino]-methyl}-benzyl)-amine) is a dicompartmental iminopyridine ligand derived from the Schiff-base condensation of α,α′-diamino- p -xylene and pyridine-2-carboxaldehyde and L 2 (N-(4-((methyl(pyridin-2-ylmethyl)amino)methyl)benzyl)- N -methyl(pyridin-2-yl)methanamine) is the reduced N -methyl derivative of L 1 , have been isolated from the reaction of ligands with various silver salts. Six different conformations of L 1 are known that give rise to different network structures for {[AgL 1 ]ClO 4 } n . X-ray single crystal structure of polymer 1·5H 2 O reveals that the asymmetric unit contains five water molecules that form a two-dimensional hydrogen bonding network with nitrate counter anion. A new conformer of L 1 is observed in the polymeric structure of 1·5H 2 O . Coordination polymers 2 and 2a , both made of [AgL 2 ] + repeating unit, contains different conformers of L 2 . As a result, different polymeric structures are obtained for 2 and 2a . The effect of counterion on the ligand conformation and subsequently on the polymeric structure is reported.