Diamminebis(1,5‐cyclooctadiene)(μ‐1,4,10,13‐tetraoxa‐7, 16‐diazacyclooctadecane‐N7, N16)dirhodiumbis‐(hexafluorophosphate): An Example of Simultaneous First and Second Sphere Coordination

The first example of a nitrogen‐containing crown ether acting as both a first and second sphere ligand towards a transition metal is found in the rhodium complex 1. This complex contains a crystallographic center of symmetry and is stabilized by intramolecular hydrogen bridges. equation image