Aurophilic and hydrogen-bonding interactions in [1-(diphenyl­phosphino)-4-(diphenyl­phos­phin­oyl)­butane-κP¹]iodogold(I) monohydrate

In the title compound, [AuI(C₂₈H₂₈OP₂)]·H₂O, the 1-(di­phenyl­phosphino)-4-(diphenyl­phosphinoyl)butane (dppbO) ligand coordinates through the phospho­rus donor to give a linear two-coordinate P—Au—I gold(I) complex. Pairs of [AuI(dppbO)] molecules are linked by symmetric tris-water hydrogen-bond interactions. These dimers associate in zigzag fashion through intermolecular Au...Au interactions between mutually perpendicular P—Au—I groups.