Abstract
AbstractThe zinc complexes of diphenylarsinate [(Ph2AsO2)ZnCl] (1), [(Ph2AsO2)Zn(Ph2As(O)OH)Cl] (2) and [(Ph2AsO2)2Zn] (3) were prepared through the reaction of ZnCl2 with dihydroxodiphenylarsonium chloride [Ph2As(OH)2]Cl. Single‐crystal X‐ray diffraction analyses indicate that all three compounds form 1D polymer chain arrangements. Specifically, the [Ph2AsO2]− ligand coordinates with three Zn centres giving a syn,syn,anti μ3‐η1 : η2 mode in compound 1. A more diverse binding mode arised in compound 2: [Ph2AsO2]− shows a syn,anti μ2‐η1 : η1 bridging mode; while free ligand Ph2As(O)OH is bound to Zn through the oxygen atom of the As=O unit (monodentate). In addition, the hydrogen atom of Ph2As(O)OH forms a moderate hydrogen bond with the oxygen atom of [Ph2AsO2]−. Even though all [Ph2AsO2]− ligands also coordinate in a bridging mode in compound 3, a chain‐like arrangement with alternate single (anti,anti μ2‐η1 : η1) and triple (syn,syn μ2‐η1 : η1) bridging diphenylarsinate groups between tetrahedrally coordinated Zn atoms was identified.
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