The Phenomenon of Conglomerate Crystallization. XVI. Spontaneous Resolution in Coordination Compounds. XIV. The Conglomerate Behaviour of The Cobalt(III) Amine Oxalates. Crystallographic Data for NH4[trans-(NH3)2Co(NO2)2(oxalato)] AND [cis-β-Co(trien)(NO2)2][trans-(NH3)2Co(NO2(oxalato)], and the Crystal Structure of [trans-Co(en)2)2] [trans-(NH3)2Co(NO2)2(oxalato)

Abstract

Abstract The title compound crystallizes in the triclinic space group PI with cell constants a = 6.534(6) b = 10.922(9), c = 14.905(7) A, α = 94.44(5) β = 94.69(7) and γ = 105.41(1)°, V= 1016.61 A3 and d(calc; Z = 2) = 1.778 g cm−3. A total of 3824 data were collected over the range of 4° ≤ 2 0 ≤ 50°; of these, 2994 were independent and had I ≥ 3σ(I); these were used in the solution and refinement of the structure. The final R(F) and Rw(F) residuals were 0.072 and 0.108, respectively. The molecule crystallizes with two half cations at inversion centres and the anion in a general position. The two independent Co-N(NO2) distances of the cations are 1.954(2) and 1.921 (2) A, respectively, while in the anion, they are 1.901 (2) and 1.901(2); the Co-N(—NO2) distances in the cation, being trans to another NO2, are noticeably longer than those in the anion which are trans to oxalato oxygens and thus, we observe a trans influence. The Col-N(NH2) distances in the cations are 1.956(2) and 1.948(2) A while those for...