| abstract |
The present invention is a cobalt complex having the structural formula: <IMAGE> wherein each R1 is independently, a phenyl or a C1-C6 alkyl group; each R2 is independently hydrogen, a phenyl, or a C1-C6 alkyl group; R3 is either N-succinimido substituted with a C3 or greater hydrocarbon functionality at the carbon atoms alpha to the imido carbonyl carbons, or a carbonyl functionality having a C1 greater hydrocarbon substituent with the proviso that if said substituent is methyl, R2 cannot be hydrogen; and Y is o-phenylene, -CH2-a, wherein "a" is 2 or 3, -CH2-b NR4-CH2-c, wherein "b" and "c" are independently 2 or 3 and R4 is hydrogen or a C1-C12 alkyl group. These complexes have the ability to selectively and reversibly bind oxygen, thus making them useful components of oxygen separation membranes and absorbents. |