Molecular tristability of CoII(salen)-based (salen = N,N’-ethylene-bis(salicylideniminato) compounds
摘要:
The magnetic behaviors of Co(II) complexes of N,N'-bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediaminato, N,N'-bis(3-chlorosalicylidene)-1,2-cyclohexanediaminato, N,N'-bis(3,5-dichlorosalicylidene)-1,2-cyclohexanediaminato, (3-nitrosalicylidene)-1,2-cyclohexanediaminato, N,N'-bis(3,5-dinitrosalicylidene)-1,2-cyclohexanediaminato, and N,N'-diaminomaleonitrilebis(salicylideniminato) were studied to identify the presence molecular tristability that is observed for the parent Co(II)salen (salen = ethylenebis(salicylideniminato)). N,N'-bis(3,5-dinitrosalicylidene)-1,2-cyclohexanediaminato(2-)cobalt(II) exhibited tristable behavior similar to Co(II)salen, and it is anticipated to have a dimeric structure.
Aerobic oxidation of hydrocarbons catalyzed by electronegative iron salen complexes
作者:Arnd Böttcher、Mark W. Grinstaff、Jay A. Labinger、Harry B. Gray
DOI:10.1016/s1381-1169(96)00053-2
日期:1996.11
A number of salen derivatives bearing electronegative substitutents and their corresponding iron(III) chloro complexes have been prepared. Several of the complexes catalyze aerobic oxidation of cyclohexene, primarily to allylic oxidation products. Evidence supports a radical chain autoxidation mechanism, with the complex functioning to decompose intermediate alkyl hydroperoxides. Activity is observed