Conformational isomers of neutral trans-dinitrocobalt(III) complexes.
The reaction of Co(acac)3 with N-(2-aminoethyl)-1,3-propanediamine in the presence of NaNO2 results in the preparation of an unexpected dinitrocobalt(III) compound, (11-amino-4-methyl-5,8-diazaundeca-2,4-dien-2-olato-kappa4N(5,8,11),O)-dinitrocobalt(III), [Co(C10H20N3O)(NO2)2], containing the tetradentate anion of 11-amino-4-methyl-5,8-diazaundeca-2,4-dien-2-ol. Two isomers of the compound were obtained by recrystallization of the crude product. In one isomer, the two trans nitro groups are staggered, and in the other they are eclipsed.
Chun
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Department of Chemistry, University of Houston, Houston, TX 77204-5641, USA.
Bernal
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