The cobalt(III) complexes of 4,11-diacetato-1,4,8,11-tetraazabicyclo[6.6.2]hexadecane (1), [Co(1)]PF6, and 4,11-diacetamido1,4,8,11-tetraazabicyclo[6.6.2]hexadecane (2), [Co(2)][PF6]3, have been synthesized and characterized. The crystal structure of [Co(1)]PF6 consists of an octahedral cobalt(III) cation coordinated to all four ligand nitrogen donors in the macrobicycle s cavity, as well as to...

The title compound, [Co(NH(3))(6)](2)Cl(5)(NO(3)), was obtained under hydro-thermal conditions. The asymmetric unit contains three Co(3+) ions, one lying on an inversion center and the other two located at 2/m positions. All Co(3+) ions are six-coordinated by NH(3) mol-ecules, forming [Co(NH(3))(6)](3+) octahedra, with Co-N distances in the range 1.945 (4)-1.967 (3) Å. The nitrate N atom and on...

a field experiment involving red clover varieties k-39, k-17, una and viola was established on an acidic (phh2o 4.8) soil to evaluate the effects of foliar application of cobalt (a beneficial nutrient for efficient nitrogen fixation) on seed yield, and on seed yield components. the foliar spray of the crop was carried out using cobalt nitrate [co(no3)2] with the treatments: one application at t...

a series of complexes of the type trans-[co(acacen)(amine)2]clo4, where (acacen) is the (bis(acetyleacetone) ethylenediimine) and the amines are benzyl amine (bzlan) 1, 2-amino pyrimidine (2ampy) 2, n-methylpipirazine (nmpip) 3, 3-methyl pyridine (3mpy) 4, p-toluidine (p-toldn) 5, has been synthesized and characterized by uv-vis. and ft-ir. the kinetics of the substitution reaction of [co(acace...

The synthesis of the selenium-based ligand L1SeSeL1 (2,2’-diselanediylbis(N,N-bis(pyridin-2-ylmethyl)ethan-1-amine) is described along with its reactivity cobalt(II) salts. cobalt(II)-diselenide complex [Co2(L1SeSeL1)Cl4] was obtained in good yield, and spectroscopic properties closely resemble that sulfur analog. Reaction Co(II) thiocyanate results formation cobalt(III) compound [Co(L1Se)(NCS)...