S. Koner, NOVEL COLOR ISOMERISM AND CATALYTIC ACTIVITIES OF CU(SALEN) COMPLEX ENCAPSULATED IN A ZEOLITIC MATRIX, Chemical communications, (5), 1998, pp. 593-594
The green zeolite encapsulated Cu(salen) complex an treatment with MeC
N turns red and is found to be catalytically active towards oxidation
reactions whereas the green species is inactive.