metal-organic compounds
One of the title complexes, trans-diamminebis[2,3-butanedione dioximato(1-)]cobalt(III) tetrafluobarate, [Co(C4H7N2O2)2(NH3)2]BF4, is isomorphous with the other, trans-diamminebis[2,3-butanedione dioximato(1-)]cobalt(III) perchlorate, [Co(C4H7N2O2)2(NH3)2]ClO4. The octahedral coordination complex has an axial Co-N(NH3) bond of 1.953 (2) (BF4- salt) or 1.954 (3) Å (ClO4- salt).