The synthesis and characterization of N,N0-diethyl (L-Et,Et) and N-ethyl,N0-methyl (L-Et,Me) glyoxalbridged cyclam ligands are described, together with theX-ray crystal structure of the complex [MnCl2(L-Et,Me)]. Bleaching of morine in the presence of hydrogen peroxide by the corresponding Mn catalysts [MnCl2(L-Et,Et)], [MnCl2(L-Et,Me)] and [MnCl2(L-Me,Me)] has been studied in aqueous solution at three different pH values (8.0, 8.75, and 9.0). The results clearly show that increasing pH has a different effect on the three catalysts, and that the dimethyl derivative is by far the most active.
N,N'-diethyl and N-ethyl,N'-methyl glyoxal-bridged cyclams: synthesis, characterization, and bleaching activities of the corresponding Mn(II) complexes / DI MAURO, Giovanni; Annunziata, Alfonso; Cucciolito, Maria Elena; Lega, Matteo; Resta, Stefano; Tuzi, Angela; Ruffo, Francesco. - In: TRANSITION METAL CHEMISTRY. - ISSN 0340-4285. - 42:5(2017), pp. 427-433. [10.1007/s11243-017-0146-8]
N,N'-diethyl and N-ethyl,N'-methyl glyoxal-bridged cyclams: synthesis, characterization, and bleaching activities of the corresponding Mn(II) complexes
DI MAURO, GIOVANNI
;Cucciolito, Maria Elena
;Lega, Matteo
;Tuzi, Angela
;Ruffo, Francesco
2017
Abstract
The synthesis and characterization of N,N0-diethyl (L-Et,Et) and N-ethyl,N0-methyl (L-Et,Me) glyoxalbridged cyclam ligands are described, together with theX-ray crystal structure of the complex [MnCl2(L-Et,Me)]. Bleaching of morine in the presence of hydrogen peroxide by the corresponding Mn catalysts [MnCl2(L-Et,Et)], [MnCl2(L-Et,Me)] and [MnCl2(L-Me,Me)] has been studied in aqueous solution at three different pH values (8.0, 8.75, and 9.0). The results clearly show that increasing pH has a different effect on the three catalysts, and that the dimethyl derivative is by far the most active.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
