CRYSTAL AND MOLECULAR-STRUCTURE OF RACEMIC CIS-ALPHA-[COL(NO(2))(2)][BF(4)] AND CIS-ALPHA-[COL(NO(2))(2)][BF(2)O] (L = 3,6-DITHIAOCTANE-1,8-DIAMINE), A COMPOUND CONTAINING AN ANION NEWLY ISOLATED IN CRYSTALLINE FORM

Two compounds crystallized as racemates from the same crystallization batch, derived from a water solution of [CoL(NO2)2][BF4] 1 (L = 3,6-di athiaoctane-1,8-diamine) which had stood for several weeks at 21-degre es-C. The crystals have totally different morphology and were manually separated: 1, orthorhombic, space group Pca2(1), Z = 8, a = 12.811(3) , b = 12.213(6), c = 18.906(8) angstrom, R = 0.0433, R' = 0.0481 for 1 498 unique reflections; cis-alpha-[CoL(NO2)2][BF2O] 2, monoclinic, spa ce group P2(1)/n, Z = 4, a = 8.054(4), b = 13.833(4), c = 12.564(8) an gstrom, beta = 105.26(4)-degrees, R = 0.0491, R' = 0.0578 for 2022 uni que reflections. In both compounds the organic ligand is quadridentate with two trans-axial nitrogen and two cis sulfur donor atoms located trans to the two basal NO2 ligands. Likewise, in both, the counter ani on is hydrogen bonded to the terminal NH2 hydrogens. Complex 2 contain s the BF2O- anion which had, heretofore, not been isolated in crystall ine form. In both cases the cations are in the cis-alpha configuration , having LAMBDA(deltalambdalambda) and DELTA(lambdalambdadelta) pairs as the asymmetric units of 1 and 2.