MATERIALS FOR SELECTIVE TRAPPING OF CARBON MONOXIDE

摘要

New organometallic compounds based on a macro-ring ligand made up of a tetrapyrrole formation which can co-ordinate selectively and reversibly with carbon monoxide. The compounds conform to the general formula (I) : R1, R2, R3, R4 = H, 1-4C alkyl, phenyl(optionally substituted by one or more groups from vinyl, hydroxy, nitro, amino, cyano, carboxy, halogeno, benzyloxy. 1-4C alkyl or alkoxy-these themselves optionally substituted by one or more halogens); R5, R6, R7, R8 = H or 1-4C alkyl; Ra, Rb, Rc = as for R1, R2, R3, R4 with the exception of 1- 4C alkyl. An Independent claim is included for the process of separation of carbon monoxide from a gas mixture using a compound of the invention.