Magnesium-group VIII transition metal carbonyl and substituted carbonyl complexes
AssigneeExxon Research & Engineering Co.
InventorGary B. McVicker
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Abstract
The preparation of novel compounds of the general formula B.sub.x Me(M).sub.2 is described; wherein B is a Lewis base, x is an integer 1 through 4, Me is a Group IIA metal, and M is a transition metal carbonyl or a substituted transition metal carbonyl group. These compounds are shown to have utility as catalysts for hydrogenation, butadiene oligomerization, carbonylation, isomerization and hydroformylation. In a preferred embodiment the tetrakis tetrahydrofuran adduct of the magnesium-cobalt phosphine substituted carbonyl complex is shown to effectively catalyze the hydroformylation of 1-hexene.
Claims7
A magnesium Group VIII transition metal carbonyl and substituted carbonyl complex having the following formula:
- B.sub.x Me[Me'(CO).sub.a (L).sub.b ].sub.2
- wherein B is a Lewis base selected from the group consisting of ether and ketones represented by the general formulae:
- ##EQU10## wherein R and R' are C.sub.1 to C.sub.10 hydrocarbon radicals selected from the group consisting of normal, branched, and cyclic alkyl groups, aryl, alkaryl and aralkyl groups;
- R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are selected from the group consisting of hydrogen and C.sub.1 to C.sub.4 alkyl groups;
- y is an integer of from 0-3 provided that when y is O R and R' may together form a ring which may or may not include oxygen;
- x is a positive integer from 1 to 4;
- Me is magnesium;
- Me' is a transition metal selected from the group consisting of the metals of Group VIII of the Periodic Table of the Elements;
- a is an integer ranging from 1 to 4, b is an integer ranging from 0 to 3, and a+b total 4 or less;
- and L is a uni-or polydentate ligand or hydrocarbon residue which is selected from the group consisting of compounds of the following general formula:
- ##SPC3##
- and ##EQU11## wherein R, R.sub.1, R.sub.2 and R.sub.3 are radicals independently selected from the group consisting of hydrogen, C.sub.1 to C.sub.20 alkyl, C.sub.3 to C.sub.20 cycloalkyl, C.sub.6 to C.sub.20 aryl, C.sub.7 to C.sub.20 aralkyl and alkaryl, and X is selected from the group consisting of N, P, As and Sb.
Dependencies are inferred from the claim text.