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Synthesis, spectroscopic studies and X-ray structure determination of a trinuclear cobalt complex derived from the Schiff base ligand N,N-dimethyl-N'-((5-methyl-1H-imidazol-4-yl)methylene)ethane-1,2-diamine

Polynuclear mixed oxidation CoIII—CoII—CoIII complex formulated as{[(HL)(SCN)Co](m-L)[Co(SCN)4](m-L)[Co(SCN)(HL)]}2.2(C2H5OH).2(H2O) (1) has been prepared from a Schiff base (HL = N, N-dimethyl-N'- ((5-methyl-1H-imidazol-4-yl)methylene)ethane-1,2-diamine) containing imidazole ring. The complex (1) is characterized by elemental analysis, UV–Vis and IR spectroscopic studies. The complex (1) crystallizes in the triclinic space group P-1 with unit cell dimensions a = 11.3017 (7) Å, b = 15.1468 (11) Å, c = 18.9796 (18) Å,? = 71.849 (7)°, ? = 82.048 (7)°, ? = 86.477 (6)°, V = 3057.1 (4) Å3, Z = 1, R1 = 0.092 and wR2 = 0.308. Both CoII andCoIII cationsare in a N6 inner and are situated in a distorted octahedral environment. The CoII cation is linked by two imidazole nitrogen atoms and fournitrogen atoms from thiocyanate anions. The CoIII cation is octacoordinated is linked by two imidazole nitrogen atoms, two imino nitrogen atoms, one secondary amino nitrogen atom and one nitrogen atom from thiocyanate anion. Variable temperature (300–2 K) magnetic susceptibility measurements have been carried out for the complex.

Auteur(s) : Pokpa Haba, Thierno Moussa Seck, Mouhamadou Moustapha Sow, Mamour Sarr, Ibrahima Elhadji Thiam, Aliou Hamady Barry, Mohamed Gaye, and Pascal Retaillea
Pages : 8-17
Année de publication : 2020
Revue : IOSR Journal of Applied Chemistry (IOSR-JAC)
N° de volume : 13
Type : Article
Mise en ligne par : GAYE Mohamed Lamine