Bis(2,2 '-bipyridine-N,N ')dicyanoiron(III) nitrate

The Fe atom of the title compound, [Fe(bipy)(2)(CN)(2)O](NO3) (bipy is 2,2' -bipyridine, C10H8N2), is octahedrally coordinated to the N atoms of the bi pyridines and to the C atoms of the cyanide groups which are cis to each ot her. The Fe-C distances are 1.922 (3) and 1.923 (2) Angstrom, and the Fe-N bonds trans to CN are 1.972 (2) and 1.973 (2) Angstrom and are longer than those cis to the CN groups, viz. 1.955 (2) and 1.962 (2) Angstrom. The bipy ridine groups are close to being planar, with N-C-C-N torsion angles of -2. 4 (3) and 1.6 (3)degrees, and bite angles of 81.43 (8) and 81.74 (8)degrees .