Air Products and Chemicals, Inc.

The Ohio State University

University of Kansas

Daryle H Busch

Dorai Ramprasad

Bala Subramaniam

John A Norman

Fenghui Niu

Tie-Pan Shi

Hyun-Jin Lee

Salts containing cations of the formula: ##STR1## (in which M is Co, Fe, Cr or Mn, X, Y, R.sub.1,

Salts of cationic-metal dry cave complexes

The present invention is a cobalt complex having the structural formula: ##STR1## wherein each R.sub.1 is independently, a phenyl or a C.sub.1 -C.sub.6 alkyl group; each R.sub.2 is independently hydrogen, a phenyl, or a C.sub.1 -C.sub.6 alkyl group; R.sub.3 is either N-succinimido substituted with a C.sub.3 or greater hydrocarbon functionality at the carbon atoms .alpha. to the imido carbonyl carbons, or a carbonyl functionality having a C.sub.1 greater hydrocarbon substituent with the proviso that if said substituent is methyl, R.sub.2 cannot be hydrogen; and Y is o-phenylene, --CH.sub.2 --.sub.a, wherein 'a' is 2 or 3, --CH.sub.2 --.sub.b NR.sub.4 --CH.sub.2 --.sub.c, wherein 'b' and 'c' are independently 2 or 3 and R.sub.4 is hydrogen or a C.sub.1 -C.sub.12 alkyl group. These complexes have the ability to selectively and reversibly bind oxygen, thus making them useful components of oxygen separation membranes and absorbents.

Pillared cobalt complexes for oxygen separation

The present invention is a cobalt complex having the structural formula: ##STR1## wherein each R.sub.1 is independently hydrogen, a phenyl or a C.sub.1 -C.sub.6 alkyl group; each R.sub.2 is independently hydrogen or a C.sub.1 -C.sub.6 alkyl group; R.sub.3 is a C.sub.4 -C.sub.30 hydrocarbyl radical connecting the two carbonyl carbons; and Y is o-phenylene, --CH.sub.2).sub.a wherein 'a' is 2 or 3, --CH.sub.2).sub.b NR.sub.4 --CH.sub.2).sub.c, wherein 'b' and 'c' are independently 2 or 3 and R.sub.4 is hydrogen or a C.sub.1 -C.sub.12 alkyl group. These complexes have the ability to selectively and reversibly bind oxygen, thus making them useful components of oxygen separation membranes and absorbents.

Lacunar cobalt complexes for oxygen separation

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Columbus, OH, United States of America

Daryle H Busch