Tetra-n-butylamine(carbonato-κ2O,O′)cobalt(III)n-butylcarbamate dihydrate

Tony D. Keene, Michael B. Hursthouse, Daniel J. Price
2004 Acta Crystallographica Section E  
Key indicators Single-crystal X-ray study T = 120 K Mean '(C±C) = 0.003 A Ê R factor = 0.041 wR factor = 0.108 Data-to-parameter ratio = 21.2 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e. # 2004 International Union of Crystallography Printed in Great Britain ± all rights reserved The title compound, [Co(CO 3 )(C 4 H 11 N) 4 ](C 5 H 10 NO 2 )Á2H 2 O, is a coordination complex with an N 4 O 2 coordination sphere around the
more » ... here around the central Co III ion. The small bite angle of the chelating carbonate causes a distortion of the octahedral geometry to an approximately C 2v local symmetry. Hydrogenbonding between the carbonate, carbamate and amine groups, and the water of crystallization, results in a complex twodimensional network. Comment The title complex, (I) (Fig. 1) , crystallized very slowly from a mixture of cobalt(II) oxalate dihydrate, n-butylamine and water. This synthesis involves the aerobic oxidation of Co II to Co III , which is facilitated by the strong-®eld amine ligands. In addition, the oxalate is oxidized to CO 2 , which is sequestered in this basic reaction mixture and converted into carbonate and n-butylcarbamate. Compound (I) contains monocationic [Co(BuNH 2 ) 4 (CO 3 )] units and non-coordinating n-butylcarbamate anions. The Co III ion has a distorted octahedral coordination environment
doi:10.1107/s1600536804005070 fatcat:kd3hkfzl6naeldbtx4anksvxdi