A second monoclinic polymorph of caesium salicylate monohydrate

The structure of the title caesium salt with salicylic acid, poly [2-aqua-4-(salicylato-4O1:O1:O1':O2)caesium], [Cs(C7H5O3)(H2O)]n, represents a second monoclinic polymorph of this compound. The two-dimensional coordination polymeric structure is based on a centrosymmetric dinuclear bridged repeat unit with each irregular CsO6 coordination polyhedron comprising a 2-bridging water molecule and 4-bridging O-atom donors, three from the carboxyl group and one from the phenolic group of the salicylate ligand. The Cs-O bond range is 3.023(3)-3.368(4)Å and the CsCs separation within the dinuclear unit is 4.9265(6)Å. The polymeric sheet structure lies parallel to (010) with the water molecule and the phenol group involved in intra-polymer O-HOcarboxyl hydrogen-bonding interactions