A complex corrugated sheet structure is formed by self-assembly from the simple building block [Ag(dmso)] +

The structure of [Ag(dmso)BF4] is described, in which the tetrafluoroborate ion is only weakly coordinated. A corrugated sheet structure is formed by self-assembly of the [Ag(dmso)]+ building blocks through triply bridging μ3-S,O,O-dmso ligands. This is a new bonding mode for transition metals with sulfoxide ligands and suggests that self-assembly of complex structures from sulfoxide ligands is a field with significant potential.