A Microporous 1D Heterometallic Coordination Polymer Based on Phosphine-Ag5Cl4 Saddle Unit

A novel microporous one-dimensional heterometallic coordination polymer has been assembled based on a hybrid phosphine ligand, 3,5-bis(diphenylphosphino)benzoic acid, Ag5Cl4 saddle units, and Mn2+. The complex was characterized by a variety of techniques, including single-crystal X-ray diffraction, X-ray powder diffraction, IR, TGA, and microanalysis. Single crystal X-ray analysis shows that the phosphine-Ag5Cl4 saddle units are connected by Mn(II) ions to form 1D beaded coordination chains; and, the 1D coordination chains are parallel-packed via pi-pi interactions to result in permanent microporosity. The complex represents a rare example of porous 1D coordination polymers as evidenced in a nitrogen adsorption investigation (Langmuir surface area, 307 m(2) g(-1)).