An N8O6 cryptand: the host for Ag+guests and H2O molecules

A silver complex [Ag2L](SbF6)2(DMF)2 (1) and a multi-protonated complex [H4L·2H2O]4+·4Cl−·8H2O (2) of an N8O6 cryptand L were synthesized and characterized. L in the complexes is formulated C60H78N8O6 and is the N8O6 reduced polyaza-oxa cryptand containing not only nitrogen donors but also oxygen atoms. The conformations of L in the two complexes are endo-endo with the longest distances between the two bridge-head nitrogen donors (19.597(8) for 1 and 18.347(4) Å for 2) in the reported polyaza or polyaza-oxa cryptands.