Metallocene complexes, their synthesis and use in catalyst...

Details Metallocene complexes, their synthesis and use in catalyst... Metallocene complexes, their synthesis and use in catalyst...

2007-12-11

2007-12-11

Lu, Caixia (Department: 1713)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C556S012000, C556S053000, C502S103000, C502S152000, C526S131000, C526S160000, C526S165000

Reexamination Certificate

active

11284885

ABSTRACT:
A metallocene complex is represented by the the formulain-line-formulae description="In-line Formulae" end="lead"?(CpR5)nMXkin-line-formulae description="In-line Formulae" end="tail"?where Cp(each occurrence) is a cyclopentadienyl group; each of the five R substituents on the or each cyclopentadienyl group is independently selected from hydrogen, C1to C30substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure, and SiR′2NR″2where each of the two R′ substituents is independently selected from hydrogen, C1to C30substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R′ substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure, and each of the two R″ substituents is independently selected from C2to C30substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R″ substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure; n is 1 or 2; M is a metal of valence m from Groups 4 to 11 of the Periodic Table of Elements, k is equal to m minus n and the or each X substituent is a univalent anionic ligand, or two X substituents are joined and bound to the metal atom to form a metallocycle ring, or two X substituents are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand, provided that at least one R substituent on the or one cyclopentadienyl group is SiR′2NR″2, provided that at least one R substituent on at least one Cpis SiR′2NR″2and provided that one or the Cpmay be bridged by a bridging group to another Cpgroup, or a heteroatom containing group, where the bridging group replaces one R group on the Cpgroup(s) or a hydrogen on a heteratom containing group.

REFERENCES:
patent: 6087290 (2000-07-01), Fottinger et al.
patent: 6630549 (2003-10-01), Koike
Walker et al., “Synthesis, Structures, and Ring-Opening Polymerization Reactions on Substituted Cyclopentadienyl Complexes of Zinc”, Organometallics, 2003, 22, pp. 797-803.
Yu et al., “Role of Amine Structure and Site Isolation on the Performance of Aminosilica-Immobilized Zirconium CGC-Inspired Ethylene Polymerization Catalysts”, Organometallics, 2004, 23, pp. 4089-4096.
Zemanek et al., “Synthesis of {1,3-bis(η5-tetramethylcyclopentadienyl)-1,1,3,3-tetramethyldisiloxane} dichlorotitanium(IV) via hydrolysis of bis { η5-(N,N-dimethylaminodimethylsilyl) tetramethylcyclopentadienyl}dichlorotitanium(IV)”, Inorg. Chem. Comm. 4 (2001), pp. 520-525.
Pinkas et al., “Synthesis and structure of bis{η5-1,2,3,4-tetramethyl-5-(dimethylsilylsulfido-κS)cyclopentadienyl} titanium(IV)”, Inorg. Chem. Comm. 7 (2004), pp. 1135-1138.
Ciruelo et al., “Synthesis and reactivity of new silyl substituted monocyclopentadienyl zirconium complexes. X-ray molecular structure of [Zr{η5-C5H4(SiMe2CH2Ph)}(CH2Ph)3]”, Journal of Organo. Chem. 547 (1997), pp. 287-296.
Gomez et al., “Reactivity of chlorodimethylsilyl- η5-cyclopentadienyltrichlorotitanium with nitrogen based donors. X-ray molecular structure of [Ti{ η5-C5H4SiMe2[η1-N(2,6-Me2C6H3)]}Cl2]” Journal of Organo. Chem. 564 (1998), pp. 93-100.
Alt et al., “Synthesis, characterization and polymerization potential of ansa-metallocene dichloride complexes of titanium, zirconium and hafnium containing of Si—N—Si bridging unit”, Journal of Organo. Chem. 564 (1998), pp. 109-114.
Ciruelos et al., “Synthetic and reactivity studies of mono- and dicyclopentadienyl titanium, zirconium and hafnium complexes with the chlorodimethylsilyl-cyclopentadienyl ligand. X-ray molecular structure of Hf{(η5-C5H4)SiMe2OSiMe2(η5-C5H4)}Cl2and Zr(η5-1,3-1Bu2C5H3)(η5-C5H4SiMe2-η-N1Bu)Cl”, Journal of Organo. Chem., 604 (2000), pp. 103-115.
Pinho et al., “Ground State Modulation in Nickel(III) Chemistry by Controlling Axial Ligation in Complexes with N3O2Pentadentate Ligands”, Eur. J. Inorg. Chem. 2001, pp. 1483-1493.
Rau et al., “Synthesis, Structure and Reactivity of a Zirconocene Dichloride with (Me3Si)2NSiMe2Side-Chains”, Eur. J. Inorg. Chem. 2001, pp. 1785-1788.
Bourke et al., “Ring-Opening Protonolysis of Sila[1]ferrocenophanes as a Route to Stabilized Silylium Ions”, Chem. Eur. J. 2005, 11, pp. 1989-2000.
Anon, “Novel Preparation of Transition Metal Dichloride Complexes”, Research Disclosure, 2001, 445 (May), P814, No. RD445105.

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