Mononuclear cobalt(III) complexes with N-salicylidene-2-hydroxy-5-bromobenzylamine and N-salicylidene-2-hydroxy-5-chlorobenzylamine

Cobalt(III) complexes with N-salicylidene-2-hydroxy-5-bromobenzylamine (H(2)sbba) and N-salicylidene-2-hydroxy-5-chlorobenzylamine (H(2)scba), [n-(C4H9)(4)N][Co(sbba)(2)] (I) and [n-(C4H9)(4)N][Co(scba)(2)] (II), were synthesized. The crystal structure of II was determined by the single-crystal X-ray diffraction method at 90 K confirming its crystallization in the monoclinic space group P2(1)/n with a = 11.729(2) angstrom, b = 16.901(3) angstrom, c = 21.483(4) angstrom, beta = 98.840(4)degrees, V = 4208.2(14) angstrom(3), D-x = 1.295 g cm(-3), and Z = 4. The R1 [I > 2 sigma(I)] and wR2 (all data) values of 0.0664 and 0.1920, respectively, for all 9521 independent reflections. The compound is composed of a tetra(n-butyl) ammonium cation and an octahedral cobalt(III) complex anion with two scba(2-) ligands in a meridional fashion. The electronic spectral features of I and II are consistent with the octahedral cobalt(III) ion with an N2O4 donor set. (c) 2015 Institute of Chemistry, Slovak Academy of Sciences