Patent ID: 6103908
Filing Date: 2000-08-15
Classification: B01J,C07F

Abstract:
A nonaqueous ionic ligand liquid, insoluble in water and an organic solvent of the formula (Q.sup..sym.)a A.sup.a-, wherein Q.sup..sym. is a singly charged quaternary ammonium and/or phosphonium cation or the equivalent of a multiply charged ammonium and/or phosphonium cation and A.sup.a- is a triarylphosphine of the formula: ##STR5## where Ar.sub.1, Ar.sub.2 and Ar.sub.3 are individually aryl of 6 to 14 carbon atoms, Y.sub.1, Y.sub.2 and Y.sub.3 are individually selected from the group consisting of alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, chlorine, bromine, hydroxyl, cyano, nitro and --NR.sup.1 R.sup.2, where R.sup.1 and R.sup.2 are individually hydrogen or alkyl of 1 to 4 carbon atoms, m.sub.1, m.sub.2 and m.sub.3 are individually integers from 0 to 5,n.sub.1, n.sub.2 and n.sub.3 are individually integers from 0 to 3, where at least one of n.sub.1, n.sub.2 and n.sub.3 is equal to or greater than 1, anda is n.sub.1 +n.sub.2 +n.sub.3,and amines and/or phosphines derived from Q.sup..sym. are present in an excess of up to 5 equivalents over the stoichiometrically required amount for the formation of (Q.sup..sym.)a A.sup.a- or alkali metal or alkaline earth metal salts of the triarylphosphines A.sup.a- are present in an excess of up to 5 equivalents over the stoichiometrically required amount for the formation of (Q.sup..sym.)a A.sup.a-.