cis-diazidobis(ethylenediamine)cobalt(III) mesitylenesulphonate hemihydrate, [cis-Co(en)(2)(N-3)(2)]C(9)H(11)SO(3)(.)0.5H(2)O was crystallized from a solution of cis-diazidobis(ethylenediamine) cobalt(III) nitrate and sodium mesityleriesulphonate in aqueous medium in 1:1 molar ratio. Elemental analysis, spectroscopic studies (IR, UV/visible, H-1 and C-13 NMR) and conductance studies were undertaken for characterizing the complex salt. The compound crystallizes in the triclinic space group P-I with a=7.15220(10), b=14.5218(3), c=20.6925(5), V= 2058.48(7), Z=4. X-ray structure determination revealed an ionic structure consisting of [cis-Co(en)(2)(N-3)(2)](+) cation, mesitylenesulphonate anion and half water molecule. In the complex cation [cis-Co(en)2(N3)2](+), the cobalt(III) is bonded to six nitrogen atoms, originating from two ethylenediamines, and two azide groups showing an octahedral geometry around cobalt. The crystal lattice is stabilized by electrostatic forces of attraction and hydrogen bonding interactions predominantly N-H...O-, suggesting that [cis-Co(en)(2)(N-3)(2)](+) is a promising anion receptor for the mesitylenesulphonate ion. This is the first report of a sulphonate salt containing the present cationic cobaltammine.
Second sphere coordination in anion binding: Synthesis, characterization and X-ray structure of cis-diazidobis(ethylenediamine)cobalt(III) mesitylenesulphonate hemihydrate
PRETTO, Loretta;FERRETTI, Valeria
2006
Abstract
cis-diazidobis(ethylenediamine)cobalt(III) mesitylenesulphonate hemihydrate, [cis-Co(en)(2)(N-3)(2)]C(9)H(11)SO(3)(.)0.5H(2)O was crystallized from a solution of cis-diazidobis(ethylenediamine) cobalt(III) nitrate and sodium mesityleriesulphonate in aqueous medium in 1:1 molar ratio. Elemental analysis, spectroscopic studies (IR, UV/visible, H-1 and C-13 NMR) and conductance studies were undertaken for characterizing the complex salt. The compound crystallizes in the triclinic space group P-I with a=7.15220(10), b=14.5218(3), c=20.6925(5), V= 2058.48(7), Z=4. X-ray structure determination revealed an ionic structure consisting of [cis-Co(en)(2)(N-3)(2)](+) cation, mesitylenesulphonate anion and half water molecule. In the complex cation [cis-Co(en)2(N3)2](+), the cobalt(III) is bonded to six nitrogen atoms, originating from two ethylenediamines, and two azide groups showing an octahedral geometry around cobalt. The crystal lattice is stabilized by electrostatic forces of attraction and hydrogen bonding interactions predominantly N-H...O-, suggesting that [cis-Co(en)(2)(N-3)(2)](+) is a promising anion receptor for the mesitylenesulphonate ion. This is the first report of a sulphonate salt containing the present cationic cobaltammine.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
