STRUCTURES OF ENEDIAMINE)(ISOTHIOCYANTO)(THIOSULFATO)COBALT(III) AND NEDIAMINE)(ISOTHIOCYANATO)(THIOSULFATO)COBALT(III)

ediamine)(isothiocyanato)-(thiosulfato)cobalt(III) monohydrate, cis-[C o(NCS)-(S2O3)(C2H8N2)2].H2O, M(r) = 367.4, orthorhombic, Pca2(1), a = 12.369 (9), b = 7.958 (8), c = 13.818 (9) angstrom, V = 1360 (2) angst rom3, Z = 4, D(m) = 1.78, D(x) = 1.79 Mg M-3, lambda(Mo Kalpha) = 0.71 073 angstrom, mu = 1.75 mm-1, F(000) = 760, T = 294 K, R = 0.037 for 1 293 observed [F > 6sigma(F)] reflections. nediamine)(isothiocyanato)(t hiosulfato)cobalt(III) sesquihydrate, trans-[Co(NCS)(S2O3)(C2H8N2)2].1 .5H2O, M(r) = 376.4, monoclinic, Pc, a = 9.941 (8), b = 8.884 (5), c = 16.42 (2) angstrom, beta = 94.03 (8)-degrees, V = 1446 (2) angstrom3, Z = 4, D(m) = 1.71, D(x) = 1.73 Mg M-3, lambda(Mo Kalpha) = 0.71073 a ngstrom, mu = 1.64 mm-1, F(000) = 780, T = 294 K, R = 0.0457 for 3148 observed [F > 6sigma(F)] reflections. The structural trans effect, STE , the difference between the CoN(en) bond lengths trans to a ligand an d the average of the two Co-N(en) bond lengths that are both cis to th at ligand and trans to each other, is 0.03 (i) angstrom for SSO32- and 0.00(1) angstrom for -NCS in cis-[Co(NCS)(S2O3)(en)2].H2O.