Photoluminescent coordination polymers of d(10) metals with 4,4 '-dipyridylsulfide (dps)

摘要

Reactions of AgClO4. Zn(CH3COO)(2) (.) H2O and CuI with the ligand 4,4'-dipyridylsulfide (dps) in 1:1 ratio give rise to coordination polymers 1-3 and 5. the structures of which were characterized by X-ray crystallography. Polymers [Ag-2(dps)(2)](ClO4)(2) (.) -MeCN (1) and [Ag-2(dps)(2)(mu(2)-MeCN)(MeCN)](ClO4)(2) (.) MeCN (.) H2O (2) are pseudo-supramolecular isomers, differing from each other in the coordination geometry of silver atom and the packing pattern. Both I and 2 are zigzag coordination polymers bridged by weak (AgAg)-Ag-..., (AgS)-S-... or Ag(...)NdropC-CH3 interactions to form double stranded coordination polymers. While [Zn(dps)(CH3COO)2] (3) is a zigzag single stranded coordination polymer, [Zn(dps)(2)(H2O)(2)](ClO4)(2) H2O (4) is an unusual mononuclear complex with a box-like structure. Interesting intermolecular hydrogen bonding present in the compounds 3 and 4 leads to 3D hydrogen-bonded network structure. Coordination polymer [Cu2I2(dps)(2)] (5) is a non-interpenetrating (4,4) net. Photoluminescence properties of the compounds 1-5 have been examined in solid states at room temperature. These compounds have been found to exhibit yellow and blue photoluminescence. (C) 2004 Elsevier B.V. All rights reserved.