| US 7,569,646 B1 | ||
| Group IVB transition metal compounds | ||
| Jo Ann Marie Canich, Webster, Tex. (US) | ||
| Assigned to ExxonMobil Chemical Patents Inc., Houston, Tex. (US) | ||
| Filed on Jul. 11, 1991, as Appl. No. 7/728,428. | ||
| Application 07/728428 is a division of application No. 07/533245, filed on Jun. 04, 1990, granted, now 5,055,438. | ||
| Application 07/533245 is a continuation in part of application No. 07/406945, filed on Sep. 13, 1989, abandoned. | ||
| Int. Cl. C08F 4/642 (2006.01); C08F 4/6592 (2006.01); C07F 17/00 (2006.01); C07F 7/00 (2006.01); C07F 7/28 (2006.01) | ||
| U.S. Cl. 526—160 [526/161; 526/170; 526/172; 526/943; 526/127; 556/11; 556/52] | 56 Claims |
1. A compound having the general formula:
 (C5H5-xRx) is a cyclopentadienyl ring which is substituted with from zero to five substituent groups R, x is 0, 1, 2, 3, 4 or 5 denoting
the degree of substitution, and each substituent group R is, independently, a radical selected from the group consisting of
C1-C20 hydrocarbyl radicals, substituted C1-C20 hydrocarbyl radicals wherein one or more hydrogen atoms is replaced by a halogen atom, C1-C20 hydrocarbyl-substituted metalloid radicals wherein the metalloid is selected from the group IV A of the Periodic Table of
Elements, and halogen radicals, or (C5H5-xRx) is a cyclopentadienyl ring in which two adjacent R groups are joined forming a C4-C20 ring to give a saturated or unsaturated polycyclic cyclopentadienyl ligand;
(JR′z-1) is a heteroatom ligand in which J is an element with a coordination number of three from Group V-A of the Periodic Table
of Elements, each R′ is, independently, a radical selected from a group consisting of C1-C20 hydrocarbyl radicals, substituted C1-C20 hydrocarbyl radicals where one or more hydrogen atoms is replaced by a halogen radical, and z is the coordination number of
the element J;
each Q is, independently, selected from the group consisting of halogen, hydride or C1-C20 hydrocarbyl, provided that Q is different from (C5H5-xRx);
L is a neutral Lewis base where “w” is a number greater than 0 and up to 3;
M′ has the same meaning as M; and
Q′ has the same meaning as Q.
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