Syntheses and structures of three two-dimensional silver(I)-hexamethylenetetramine co-ordination polymers with new topological motifs

Three new co-ordination complexes, [Ag(mu -hmt)(cin)]. 2H(2)O 1</BO>, [Ag-2 (mu (3)-hmt)(sal)(2)] 2, and [Ag-2(mu -hmt)(mu (3)-hmt)(ssa)] 3 (hmt = hexa methylenetetramine (1,3,5,7-tetraazatricyclo[3.3.1(3,7)]decane), cin = cinn amate, sal = salicylate and ssa = 5-sulfosalicylate), have been prepared an d structurally characterised. All of these complexes contain different new topological motifs of two-dimensional Ag-hmt nets. Among them, 1 has two-di mensional infinite co-ordination layers featuring compressed hexagonal unit s each consisting of six Ag(I) and four mu -hmt ligands as spacers. 2 has t wo-dimensional infinite wavy co-ordination layers with decagonal and small hexagonal units; each decagonal unit comprises six Ag(I) and four mu (3)-hm t ligands, and each small hexagonal unit comprises four Ag(I) and two mu (3 )-hmt ligands. 3 has two-dimensional infinite highly undulated Ag-hmt layer s with irregular decagonal units each consisting of five Ag(I), two mu -hmt and three mu (3)-hmt ligands.