Synthesis, crystal structures, and photoluminescence of two silver(I) coordination polymers based on 2-sulfoterephthalic acid and N-donor ligands

Abstract

The reactions of 2-sulfoterephthalic acid (H 3 stp) with silver nitrate in the presence of 2-aminopyrimidine (apym) or 2-amino-4,6-dimethylpyrimidine (dapym) generated two 2-D coordination polymers {[Ag 3 (stp)(apym) 3 ]Á2H 2 O} n (1) and {[Ag 2 (Hstp)(dapym) 2 (H 2 O)]ÁH 2 O} n (2). The complexes have been characterized by single-crystal X-ray diffraction, physico-chemical, and spectroscopic methods. Both complexes have a 2-D layer structure with infinite 1-D chains linked by stp 3-ligands and hydrogen bonds. The luminescent properties of the complexes were investigated.

CuIIand ZnIIβ-diketonate coordination polymers based on pyrimidin-2-amine, pyrazine and 1,2-bis(4-pyridyl)ethane

“…There are two most common types of chains formed due to a bridging pyr2a ligand: (i) type I having pyr2a ligands oriented in the alternate fashion observed mostly in the firstrow transition metals (Albada et al, 2003;Prince et al, 2003;Lynch & Duckhouse, 2000;Smith et al, 1991;Blake et al, 2002;Sun et al, 2010;Pike et al, 2006;Smith et al, 1996;Mautner et al, 2011;Wang et al, 2013) as well as in Cd and Hg polymers (Salinas-Castillo et al, 2011;Eshtiagh-Hosseini et al, 2012), and (ii) type II having pyr2a ligands oriented with amino groups at the same side, as observed mostly in Ag polymers (Wang et al, 2006;Luo et al, 2009;Sun et al, 2011;Fig. 3).…”

Synthesis, Crystal Structure, Vibrational Spectroscopy and Theoretical Studies of Catena-Poly [[Silver (I)-µ-Piperazine-Ƙ2 N: N’] Nirate]

“…Silver (I) complexes as a part of coordination polymers have spurred considerable attention owing to their intriguing structures and wide potential use e.g. in catalysis, in gas sorption, luminescence or as antimicrobial coating [1][2][3][4] . As is well-known, silver (I) ion exhibits different coordination geometries from linear to trigonal, tetragonal, square pyramidal, and octahedral, corresponding to coordination numbers ranging from 2 to 6 and it has high affinity for hard donor atoms such as nitrogen or oxygen atoms, which have been proved to be one of the most important factors contributing to the formation of such complexes and special properties [5][6][7] .…”