Coordination catalyst systems
AssigneeMerck Patent GmbH
InventorsLudwig Pohl, Fike Poetsch, Herbert Schumann, Karin Weiss, Karl-Heinz Thiele, Hans-Ludwig Hirsch
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Abstract
The invention relates to the use of cyclic organometallic compounds as components in coordination catalyst systems, to corresponding coordination catalyst systems and also to processes for the preparation of polymers by coordination polymerization and of unsaturated hydrocarbons by catalyzed metathesis of alkenes and alkynes using such coordination catalyst systems.
Claims11
A coordination Catalyst system based on transition metal compounds of subgroup IV to VIII and a cyclic organometallic compound of main group III of the Periodic Table of Elements, wherein said cyclic organometallic compound is a compound of the formulae I or II ##STR3## in which M is B, Al, Ga, In,
- X.sup.1, X.sup.2, X.sup.3 are, in each case independently of one another, CHR.sup.1, NR.sup.2, O, S,
- Y.sup.1, Y.sup.2 are, in each case independently of one another, --(CH.sub.2).sub.m --, o-(CH.sub.2).sub.p --C.sub.6 H.sub.4 --(CH.sub.2).sub.q --, o-(CH.sub.2).sub.p --C.sub.6 H.sub.6 --(CH.sub.2).sub.q --, o-(CH.sub.2).sub.p --C.sub.6 H.sub.8 --(CH.sub.2).sub.q --, o-(CH.sub.2).sub.p --C.sub.6 H.sub.10 --(CH.sub.2).sub.q --, o-(CH.sub.2).sub.p --C.sub.5 H.sub.4 --(CH.sub.2).sub.q --, o-(CH.sub.2).sub.p --C.sub.5 H.sub.6 --(CH.sub.2).sub.q --, o-(CH.sub.2).sub.p --C.sub.5 H.sub.8 --(CH.sub.2).sub.q --, --(CH.sub.2).sub.p --CH.dbd.CH--(CH.sub.2).sub.q --,
- Z is NR.sup.3 R.sup.4, PR.sup.3 R.sup.4 , OR.sup.5, SR.sup.5,
- R.sup.1 is H, OH, halogen, C.sub.1-6 -alkyl or C.sub.1-6 -alkoxyl, C.sub.5-7 -cycloalkyl, phenyl,
- R.sup.2, R.sup.3, R.sup.4, R.sup.5 are, in each case independently of one another, H or C.sub.1-6 -alkyl, C.sub.5-7 -cycloalkyl, phenyl, R.sup.3 and R.sup.4 together also a C.sub.4-6 -alkylene bridge,
- m is a number from 1 to 6,
- p, q are, in each case independently of one another, a number from 0 to 2, ##STR4## having M, R.sup.2 and R.sup.3 as defined above and in which Z' is N, P,
- a is a number from 2 to 4,
- b, c are the numbers 0 or 1 with b+c=1.
Dependencies are inferred from the claim text.