Fabienne Connac, Nouzha Habaddi, Y. Lucchese
Mar 15, 1997
Citations
0
Influential Citations
17
Citations
Journal
Inorganica Chimica Acta
Abstract
Abstract The reaction of ZnCl 2 with 2-[(diethylamino)methyl]phenol ( AH ) or 2-[(diethylamino)methyl]-4-methylphenol ( BH ) in the presence of NEt 3 (1:1:1 ratio) gave good yields of the complexes (Et 3 NH)[ZnCl 2 L] (L= A ( 1 ), B ( 2 )). Colourless crystals of 2 (monoclinic, P 2 1 / c , a =13.767, b =11.650, c =14.789 A, β =109.66°, Z =4, R =0.042) contain monomeric tetrahedral zincate anions in which the metal is surrounded by two Cl atoms and one bidentate aminophenolato ligand. The Et 3 NH + counter cation is hydrogen-bonded to the coordinated phenolate oxygen. Brown CuL 2 complexes (L= A ( 3 ), B ( 4 )) were obtained by reacting Cu(NO 3 ) 2 ·3H 2 O, CuCl 2 ·2H 2 O or CuSO 4 ·3H 2 O with AH and BH , respectively, in the presence of NEt 3 in a 1:2:2 Cu:ligand:NEt 3 ratio. Crystals of 4 (monoclinic, P 2 1 / c , a =8.165, b =14.798, c =9.481 A, β =90.91°, Z =2, R =0.048) contain monomeric square-planar copper centres surrounded by two bidentate aminophenolato ligands in a trans arrangement. The presence of relatively bulky ethyl substituents on the amino group favours the monomeric chelates by preventing the formation of phenolato-bridged polynuclear arrangements.