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Issue 12, 2012
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Silver(i) supramolecular complexes generated from polydentate ligands containing cyano and pyridyl groups

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Abstract

A series of silver(I) complexes of the type {[Ag(L1)][X]} (L1 = 2,6-dimethyl-3,5-dicyano-4-(4-pyridyl)-1,4-dihydropyridine; X = BF4, 1; ClO4, 2; and NO3, 3); {[Ag2(L2)4][SO4]}n, 4; and [Ag2(L2)2(NO3)2]n, 5 (L2 = 2,6-dimethyl-3,5-dicyano-4-(3-pyridyl)-1,4-dihydropyridine) have been prepared by reactions of various Ag(I) salts with L1 or L2 in MeOHH2O. All the complexes have been structurally characterized by X-ray crystallography confirming that complexes 1–3 are two-dimensional coordination polymeric nets, while complexes 4 and 5 are one-dimensional coordination polymeric chains. All the L1 ligands in complexes 1–3 act as tridentate ligands to bridge Ag(I) ions. The anions BF4 and ClO4 in complexes 1 and 2 are not coordinated to the Ag(I) atoms while the NO3 anions in complex 3 are coordinated to the metal centers through one of the three oxygen atoms. The tridentate L2 ligands in complex 4 bind soft acid Ag(I) ions through the cyano and pyridyl groups forming the 1-D polymeric chain, while in complex 5, the L2 ligands bind to Ag(I) centers in bi- and tri-dentate coordination modes. The SO42− anions in complex 4 are not coordinated to the Ag(I) atoms whereas the NO3 anions in complex 5 are coordinated to the metal centers through one of the three oxygens. The anions in complexes 4–5 play important roles in linking cationic chains or layers into 3-D supramolecular structures.

Graphical abstract: Silver(i) supramolecular complexes generated from polydentate ligands containing cyano and pyridyl groups

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Supplementary files

Article information


Submitted
16 May 2012
Accepted
10 Sep 2012
First published
19 Sep 2012

New J. Chem., 2012,36, 2520-2532
Article type
Paper

Silver(I) supramolecular complexes generated from polydentate ligands containing cyano and pyridyl groups

C. Yeh, W. Chang, M. Suen, C. Jou and J. Wang, New J. Chem., 2012, 36, 2520
DOI: 10.1039/C2NJ40399D

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