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Cyclopentadienyl complexe

CyclopentadienylthaHium and its alkylated derivatives are used in the synthesis of metallocenes (qv) and other transition-metal cyclopentadienyl complexes (29). [Pg.470]

Beryllium forms a series of cyclopentadienyl complexes [Beftj -CsHiY] with Y = H, Cl, Br, Me, —C=CH and BH4, all of which show the expected C5, symmetry (Fig. 5.10a). If the pe/ifo/topfo-cyclopentadienyl group (p. 937) contributes 5 electrons to the bonding, then these are all 8-electron Be complexes consistent with the octet rule for elements of the first short... [Pg.130]

Cationic cyclopentadienyl complexes are not common in this group, but recent examples whose structures have been determined include [Nb ( j -C5H5)2Cl2]BF4< > and [Nb( j -C5H5)2L2](BF4)2 (L = CNMe and NCMe),< > which have pseudo-tetrahedral symmetry. [Pg.1001]

The dissociation of coordinatively sufficient organometallic complexes in solution. For instance, for the system based on cyclopentadienyl complexes of titanium the active centers of catalytic polymerization (C Hj) -TiR]+ are caused by the following process (178, 179) ... [Pg.204]

Of the 24 lines expected for coupling between V (I =7/2) and two equivalent C (I = V ) nuclei, 18 were resolved in the epr spectrum of VO(S CNEt2)2, showing that the C(2s) orbital can also participate in transannular interactions (61). [Cp2V(S2CNEt2)BF4] and dithiophos-phate have been used in an extension of studies on the C4V oxovana-dium(IV) chelates to yield C2V bis(cyclopentadienyl) complexes. [Pg.218]

Kopf-Maier P, Kopf H (1988) Transition and Main-Group Metal Cyclopentadienyl Complexes Preclinical Studies on a Series of Antitumor Agnets of Different Structural... [Pg.249]

Bis(cyclopentadienyl) complexes are central to the organometallic chemistry of the early transition metals and feature in applications such as alkene polymerization chemistry. Parallels can be drawn between a porphyrin ligand and two cyclopentadienyl ligands, in that they both contribute a 2— formal charge and exert a considerable steric influence on other ligands in the same molecule. Several of the metalloporphyrin complexes discussed below have bis(cyclopentadienyl) counterparts, and authors in some ca.ses have drawn quite detailed comparisons, although these discussions will not be repeated here. [Pg.232]

The isotopic method has been used in conjunction with a flow apparatus by Stranks, to measure the exchange between the cyclopentadienyl complexes of iron (III) and iron (II) in methanol. Separation was based on the insolubility of Fe(C5H5) in petroleum ether at —80 °C. Using Fe(II) and Fe(III) 10 M and short reaction times ( msec), a rate coefficient 8.7 x 10 l.mole .sec at — 75 °C was obtained. The rate of exchange in the presence of chloride ions and inert electrolytes was found to be more rapid. Calculations using Marcus Theory showed reasonable agreement with the experimental observations. In deuterated acetone, line broadening measurements have led to an estimate of this rate coefficient of > 10 l.mole . sec at 26 °C. [Pg.105]

Nucleophiles, at the exocyclic methylene when bonded to Ir, Rh, and Co cyclopentadienyl complexes.17... [Pg.35]

The alkyl complex [Co(4-CNpy)(dmg)2(R)]+ has been reported.1103 The cyclopentadienyl complex [(Cp)(PPh3)Co(C4Ph4)]+ has been detected in frozen haloalkane solvent,1104 but has no long-term stability. [Pg.98]

Isomerizations are another category of reaction where Co complexes act as catalysts. Mixed S,P donor complexes Co(SCN)2(PR3)2 catalyze the isomerization of 1-butene to 2-butene in the presence of NaBH4, with CoH(SCN)(PR3)2 proposed as the active species.1366 A cyclopentadienyl complex (272) is active in the isomerization of quadricyclene to norbornadiene. [Pg.118]

More than 80 % of all organotransition metal compounds are cyclopentadienyl complexes with Cp (C5H5) and Cp (CsMes) being the most prominent cyclopentadienyl systems used [1]. However, during the past few years functionalized cyclopentadienyl systems which do not just act as innocent spectator ligands have become very attractive. [Pg.193]

Metallocenes with substituted cyclopentadienyl rings. Metallocenes with methylated rings were among the first heavy alkaline earth metallocenes to be structurally characterized, but many other substituents have been incorporated into bis(cyclopentadienyl) complexes. Under this classification are included compounds with indenyl ligands, which in... [Pg.126]

Derivatization of some mono(cyclopentadienyl) complexes to yield new monosubstituted species can often be accomplished by metathetical exchange (Equation (26)) or protonation reaction.295 Protonolysis of (CsPr 4H)Ca[N(SiMe3)2](THF) with several terminal alkynes HC CR in either toluene or hexanes produces the... [Pg.133]

The rhodium cyclopentadienyl complex [T75-C5(CH3)5RhCl2]2, in the presence of base at 50 atm H2, also effects stereoselective catalytic hydrogenation of benzenes. Substrates with unprotected —OH or —C02H groups were not effectively hydrogenated, but aryl ethers, esters, and ketones and N,iV -dimethylaniline were all reduced, some-... [Pg.377]

Despite a common perception that organometallic chemistry essentially belongs in the province of catalysis rather than in vivo applications because of high reactivity of metal carbon bonds, certain organometallic species have very high kinetic stability. Indeed, this point is highlighted by the present wide application of the isonitrile complex Tc(ses-tamibi), [Tc(2-methoxyisobutylisonitrile)6]+, in myocardial imaging. Rhenium tricarbonyl and cyclopentadienyl complexes offer further ex-... [Pg.114]

Insertions of isocyanide into niobium-carbon bonds follow a path similar to that with vanadium, resulting in the formation of the 7]2-iminoacyl complexes, which can then be involved in further chemistry.175 176 The reaction of acetone with cyclopentadienyl complex 110 under a carbon monoxide atmosphere gives the if -acetone compound 111. Complex 111 subsequently undergoes either stepwise insertion of two isocyanides via 112 or double insertion of the isocyanide to give complex 113 (Scheme 48).177... [Pg.427]

Table 9 Hydroalumination of 1 -decene using zirconium cyclopentadienyl complex... Table 9 Hydroalumination of 1 -decene using zirconium cyclopentadienyl complex...
Several mixed 7r-benzene-jr-cyclopentadienyl complexes have been investigated in UPS in order to compare the properties of these groups as ligands. The ds system Cr(cp)(bz) was investigated by Evans etal (57) together with the d6 complexes Cr(bz)2, Cr(tol)2, and Mn(cp)(bz). The spectmm of Cr(cp)(bz) shows in the region... [Pg.138]


See other pages where Cyclopentadienyl complexe is mentioned: [Pg.41]    [Pg.1200]    [Pg.108]    [Pg.109]    [Pg.132]    [Pg.259]    [Pg.251]    [Pg.302]    [Pg.80]    [Pg.131]    [Pg.135]    [Pg.135]    [Pg.113]    [Pg.5]    [Pg.278]    [Pg.92]    [Pg.78]    [Pg.97]    [Pg.116]    [Pg.127]    [Pg.354]    [Pg.52]    [Pg.182]    [Pg.59]    [Pg.57]    [Pg.446]   
See also in sourсe #XX -- [ Pg.528 , Pg.529 , Pg.530 ]




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7r-cyclopentadienyl complexes

Actinide complexes cyclopentadienyl

Aluminium cyclopentadienyl complexes

Antimony cyclopentadienyl complexes

Application of Cyclopentadienyl Complexes

Arene cyclopentadienyl osmium complexes

Arene cyclopentadienyl ruthenium complexes

Arene-cyclopentadienyl-iron complex

Arsenic cyclopentadienyl complexes

Benzene cyclopentadienyl ruthenium complex

Beryllium cyclopentadienyl complexes

Binuclear cyclopentadienyls reaction with metal complexes

Bis cyclopentadienyl complexes

Bis(cyclopentadienyl) complexes - the metallocenes

Bis-ir-cyclopentadienyl complexes

Bis-n-cyclopentadienyl alkyl and aryl complexes

Bismuth cyclopentadienyl complexes

Bulky cyclopentadienyl metal complexes

By cyclopentadienyl complexes

Carbonyl Complexed Cyclopentadienyl

Carbonyl and cyclopentadienyl complexes

Carborane analogs of cyclopentadienyl-metal complexes

Cationic molybdenum cyclopentadienyl complexes

Chemistry of Cyclopentadienyl and Related Complexes

Chromium complexes carbonyl cyclopentadienyl

Cobalt complexes chiral cyclopentadienyls

Cobalt complexes cyclopentadienyl compounds

Cobalt complexes cyclopentadienyls

Cobalt complexes dimeric cyclopentadienyls

Cobalt cyclopentadienyl complexes

Complexes cyclopentadienyl compounds

Complexes cyclopentadienyls

Complexes cyclopentadienyls

Copper cyclopentadienyl complexes

Cyclopentadiene, derivatives cyclopentadienyl metal complexes

Cyclopentadienyl --complexes preparation

Cyclopentadienyl Complexes (Metallocenes)

Cyclopentadienyl and Other Complexes

Cyclopentadienyl and arene complexes

Cyclopentadienyl and related complexes

Cyclopentadienyl anion dinuclear complexes

Cyclopentadienyl bisphosphine ruthenium complex

Cyclopentadienyl carbonyl complexes

Cyclopentadienyl carbonyl complexes alkynes

Cyclopentadienyl carbonyl complexes carbonylation

Cyclopentadienyl carbonyl complexes phosphines

Cyclopentadienyl carbonyl complexes reactions

Cyclopentadienyl carbonyl complexes structures

Cyclopentadienyl carbonyl complexes unsaturated

Cyclopentadienyl carbonyl complexes with alkynes

Cyclopentadienyl carbonyl complexes with other ligands

Cyclopentadienyl complex

Cyclopentadienyl complex

Cyclopentadienyl complex hydride

Cyclopentadienyl complex isocyanide

Cyclopentadienyl complex isoelectronic

Cyclopentadienyl complex isonitrile

Cyclopentadienyl complex metallocene

Cyclopentadienyl complex triple-decker sandwich

Cyclopentadienyl complexes 18-electron rule

Cyclopentadienyl complexes anionic

Cyclopentadienyl complexes ansa type

Cyclopentadienyl complexes application

Cyclopentadienyl complexes binuclear

Cyclopentadienyl complexes bonding

Cyclopentadienyl complexes classification

Cyclopentadienyl complexes cluster

Cyclopentadienyl complexes crystal structures

Cyclopentadienyl complexes electronic spectra

Cyclopentadienyl complexes electrophilic addition

Cyclopentadienyl complexes group 3 metals

Cyclopentadienyl complexes iron dimer

Cyclopentadienyl complexes magnetic properties

Cyclopentadienyl complexes magnetic susceptibility

Cyclopentadienyl complexes manganese

Cyclopentadienyl complexes mononuclear

Cyclopentadienyl complexes nomenclature

Cyclopentadienyl complexes of uranium, thorium and actinide metals

Cyclopentadienyl complexes reactions

Cyclopentadienyl complexes silicon-bridged

Cyclopentadienyl complexes structural chemistry

Cyclopentadienyl complexes structures

Cyclopentadienyl complexes synthesis

Cyclopentadienyl complexes tetrakis compounds

Cyclopentadienyl complexes tris compounds

Cyclopentadienyl complexes tris derivatives

Cyclopentadienyl complexes with (/-block metals

Cyclopentadienyl complexes with beryllium

Cyclopentadienyl complexes with carbonyls

Cyclopentadienyl complexes with group 13 elements

Cyclopentadienyl complexes with lanthanoids

Cyclopentadienyl complexes with magnesium

Cyclopentadienyl complexes, dimeric

Cyclopentadienyl complexes, heteroleptic

Cyclopentadienyl complexes, spectral

Cyclopentadienyl complexes, technetium

Cyclopentadienyl dithiolate complexes

Cyclopentadienyl halocarbonyl complexes

Cyclopentadienyl hydrocarbyl complexes

Cyclopentadienyl ligands iron complexes with

Cyclopentadienyl metal alkynyl complexes

Cyclopentadienyl metal nitrosyl complexes

Cyclopentadienyl nitrosyl complexes

Cyclopentadienyl rare-earth complexes

Cyclopentadienyl rhodium tris complexes, reaction with indole

Cyclopentadienyl rings cyclobutadiene complexes

Cyclopentadienyl ruthenium complexe

Cyclopentadienyl transition metal complexes

Cyclopentadienyl trimethylsilyl metal complexes

Cyclopentadienyl zirconium complexes

Cyclopentadienyl! Cp) complexes

Cyclopentadienyl) complexes of iron

Cyclopentadienyl) complexes of platinum

Cyclopentadienyl) complexes of titanium

Cyclopentadienyl)lanthanide Complexes from the Metallic Elements

Cyclopentadienyl, complexes with

Cyclopentadienyl, indenyl, and fluorenyl complexes

Cyclopentadienyl-carbonyl metal complexe

Cyclopentadienyl-metal arene complex

Cyclopentadienyl-metal complexes

Cyclopentadienyl-metal complexes dicyclopentadienyls

Cyclopentadienyl-metal complexes monocyclopentadienyls

Cyclopentadienyl-type ruthenium complexes

Cyclopentadienyle/dithiolene complexes

Density functional theory cyclopentadienyl complexes

Ethylene rhodium cyclopentadienyl complex

Europium complexes divalent cyclopentadienyls

Fluxionality cyclopentadienyl complexes

Gallium cyclopentadienyl complexes

Germanium cyclopentadienyl complexes

Gold complexes cyclopentadienyl

Group 8 (VIII cyclopentadienyl complexes

Group cyclopentadienyl complexes

Immobilized cyclopentadienyl complex

Indium cyclopentadienyl complexes

Iridium cyclopentadienyl complexes

Iron carbonyl complexes cyclopentadienyl derivatives

Iron complexes cyclopentadienyl

Iron complexes cyclopentadienyl arenes

Iron complexes cyclopentadienyl carbonyls

Iron complexes cyclopentadienyl dicarbonyl dimer

Iron complexes cyclopentadienyls

Iron complexes, cyclopentadienyl carbene

Iron complexes, cyclopentadienyl carbene cyclopropanation

Lanthanide complexes, cyclopentadienyl

Lanthanide cyclopentadienyl hydride complexes

Lanthanide hydride cyclopentadienyl complexe

Lanthanoids cyclopentadienyl complexes

Lead cyclopentadienyl complexes

Lithium cyclopentadienyl complexes

Magnesium cyclopentadienyl complexes

Molybdenum complexes cyclopentadienyl

Molybdenum complexes cyclopentadienyl sulfur

Molybdenum complexes cyclopentadienyls

Molybdenum complexes nitrosyl cyclopentadienyls

Mono complexes cyclopentadienyl compounds

N-Cyclopentadienyl complexes

Nickel complexes cyclopentadienyls

Nickel cyclopentadienyl complex

Niobium complexes cyclopentadienyl

Organometallic and Cyclopentadienyl Complexes

Organometallic complexes cyclopentadienyl ligand

Organometallic compounds cyclopentadienyl complexe

Organometallic compounds cyclopentadienyl complexes

Osmium complexes cyclopentadienyl

Palladium complexes bridging "cyclopentadienyl

Palladium complexes cyclopentadienyls

Palladium cyclopentadienyl complex

Pentamethyl cyclopentadienyl complex

Platinum complexes cyclopentadienyl

Preparation of Cyclopentadienyl Bisphosphine Ruthenium Complexes

Preparation of Triple-Decker Cyclopentadienyl Complexes

Properties of Cyclopentadienyl Complexes

Reactions of Cyclopentadienyl 7r-Complexes

Reactions of Cyclopentadienyl Complexes

Redox coupling cyclopentadienyl complexes

Rhenium complexes cyclopentadienyl

Rhodium complexes, cyclopentadienyl

Ring bridged cyclopentadienyl lanthanide complexes

Ruthenium complexes cyclopentadienyl alkyls

Ruthenium complexes cyclopentadienyl arenes

Ruthenium cyclopentadienyl complexes

Samarium complexes cyclopentadienyl compounds

Samarium complexes divalent cyclopentadienyls

Silicon cyclopentadienyl complexes

Single-cyclopentadienyl complexes

Sodium, cyclopentadienyl complexes

Spin density cyclopentadienyl complexes

Structure of Cyclopentadienyl Complexes

Sulfur iron cyclopentadienyl complexes

Tantalum complexes cyclopentadienyl

Tantalum complexes cyclopentadienyl hydride

Tantalum complexes cyclopentadienyls

Technetium compounds cyclopentadienyl complexes

Tetrahydrofuran cyclopentadienyl complexes

Tetravalent chemistry cyclopentadienyl complexes

Thallium cyclopentadienyl complexes

Thorium cyclopentadienyl complexes

Titanium cyclopentadienyl complexes

Transition Metal Complexes of Cyclopentadienyl Ligands

Transition metal cyclopentadienyl complexes, stability

Trifluorophosphine complexes cyclopentadienyls

Triphospholyl anions, formation ruthenium cyclopentadienyl complexes

Tungsten complexes cyclopentadienyl

Tungsten complexes cyclopentadienyls

Types of Cyclopentadienyl Complexes

Uranium complexes cyclopentadienyls

Uranium cyclopentadienyl complexes

Uranium cyclopentadienyl complexes reactions

Vanadium complexes cyclopentadienyl

Vanadium complexes cyclopentadienyls

Ytterbium complexes cyclopentadienyl compounds

Ytterbium complexes cyclopentadienyl halides

Ytterbium complexes cyclopentadienyls

Ytterbium, cyclopentadienyl complexes

Ytterbium, cyclopentadienyl complexes oxidation

Yttrium complexes cyclopentadienyl

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