catena-Poly[[tetrakis(μ-pentafluorobenzoato-κ2O:O′)dimolybdenum(II)]-μ-4,4′-bipyridine-κ2N:N′]

In the title compound, [Mo-2(C7F5O2)(4)(C10H8N2)](n), the molecule forms a paddle-wheel-type structure. Each Mo-2(4+) unit is equatorially coordinated by four pentafluorobenzoate groups, while the axial positions are occupied by two 4,4'-bipyridine molecules. The Mo-Mo bond length of 2.1227 (4) angstrom is representative of a dimolybdenum quadruple bond. An infinite linear chain parallel to [110] is formed by the Mo-2(4+) unit coordinating axially to the two N atoms of the 4,4'-bipyridine ligand [Mo-N = 2.594 (2) angstrom]. The crystal packing shows molecules linked together into a three-dimensional network via Mo-N coordination interactions and weak pi-pi stacking interactions between perfluorophenyl rings [centroid-centroid distance = 3.7280 (3) angstrom and centroid-to-plane distance = 3.6103 (12) angstrom between two pentafluorophenyl rings].