Reactions of co-ordinated ligands. Part 17. The synthesis and reactions of cationic η<sup>5</sup>-indenyl- and η-cyclopentadienyl-molybdenum complexes containing 1,3-diene and acetylene ligands

Bottrill, M.; Green, Michael

doi:10.1039/dt9770002365

Cited by 64 publications

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“…Although 'piano-stool' alkyne complexes of molybdenum [1][2][3][4] were first formulated as 16-electron species, with the alkyne acting as a two-electron donor, it was soon recognised that this ligand could act as a four-electron donor, thus bringing the formal electron count to 18. 5 The crystal structures of [Mo{P(OMe) 3 } 2 (h 2 -HC•CBu t )Cp] + 6 and [Mo{(MeO) 2 PO-BF 2 OP(OMe) 2 }(h 2 -PhC•CPh)Cp] + 7 show the alkyne aligned parallel to one of the metal-phosphorus bonds, as in isoelectronic tungsten and vanadium species.…”

mentioning

confidence: 99%

EPR and NMR spectroscopic studies of [MoL2(MeCCMe)Cp]z (L = P-donor ligand, z = 0 and 1): fluxionality in a metal–alkyne redox pair

2001

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confidence: 99%

EPR and NMR spectroscopic studies of [MoL2(MeCCMe)Cp]z (L = P-donor ligand, z = 0 and 1): fluxionality in a metal–alkyne redox pair

2001

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“…other alkynes. 14 Protonation of MoCp(CO) 3 CH 3 with CF 3 COOH and con secutive addition of 2-butyne in acetonitrile, followed by precipitation with a methanolic solution of [NH 4 ][PF 6 ] gives the corresponding 2-butyne complex. 15 Refluxing a solution of MoCp(CO) 3 Cl with (HOCH 2 )CC(CH 2 OH) leads to an analogous compound.…”

Section: Propertiesmentioning

confidence: 99%

Tetracarbonyldichlorodirhodium

McCleverty¹,

Wilkinson²,

Lipson³

et al. 1990

Inorganic Syntheses

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Chapter One COMPLEXES WITH WEAKLY COORDINATED LIGANDS1. Metal Complexes with Weakly Bonded Anions: General Considerations 2. Carbonyl(f/ 5 -cyclopentadienyl)(tetrafluoroborato)molybdenum and -tungsten complexes: CpM(CO) 2 (L) (BF 4 ) (M = Mo, W; L = CO, PPh 3 ) A. Tricarbonyl(?/ 5 -cyclopentadienyl)(tetrafluoroborato) molybdenum and -tungsten B.Dicarbonyl(?7 5 -cyclopentadienyl)(tetrafluoroborato) (triphenylphosphine)molybdenum and -tungsten,Carbonyl(?/ 5 -cyclopentadienyl)bis(diphenylacetylene) molybdenum (1 + ) Tetrafluoroborate(l -) 11 E. Carbonyl(?y 5 -cyclopentadienyl)(diphenylacetylene) (triphenylphosphine) molybdenum(l + ) Tetrafluoroborate(l -) F. (Acetone)(tricarbonyl)(f/ 5 -cyclopentadienyl)molybdenum-(1 + ) and -tungsten(l + ) Tetrafluoroborate(l -) 3. Pentacarbonyl(tetrafluoroborato)rhenium and -manganese and Reactions Thereof: M(CO) 5 (BF 4 ) (Μ = Mn, Re) 15 A. Pentacarbonylmethylrhenium: Re(CO) 5 Me B. Pentacarbonyl(tetrafluoroborato)rhenium(I) C. Pentacarbonyl(^2-ethene)rhenium(l + ) Tetrafluoroborate(l -): Re(CO) 5 (>/ 2 -C 2 H 4 ) + D. Octadecacarbonyl-bis(^3-carbon dioxide)-tetrarhenium: Re 4 (CO) 18 (C0 2 ) 2 20 4. Iridium(III) Complexes with the Weakly Bonded Anions [BF 4 ] and [OS0 2 CF 3 ] 22 A. Carbonylchlorohydrido(tetrafluoroborato)bis(triphenylphosphine)iridium(III): Ir(Cl)(CO)(PPh 3 ) 2 (H)(BF 4 ) 23 xiii xiv Contents Β. Carbonylchloromethyl(tetrafluoroborato)bis(triphenylphosphine)iridium(III): Ir(Cl)(CO)(PPh 3 ) 2 (CH 3 )(BF 4 ) C. Chloro(dinitrogen)hydrido(tetrafluoroborato)bis(triphenylphosphine)iridium(III): Ir(Cl)(N 2 )(PPh 3 ) 2 (H)(BF 4 ) D. Carbonylhydridobis(trifluoromethanesulfonato)bis(triphenylphosphine)iridium(III): Ir(CO)(PPh 3 ) 2 (H)(0 3 SCF 3 ) 2 5. cis-Chlorobis(triethylphosphine)(trifluoromethanesulfonato)platinum(II) * 6. Tricarbonyltris(nitrile) Complexes of Cr, Mo, and W: M(CO) 3 (NCEt) 3 (M = Cr, Mo, W) A. Tricarbonyltris(propionitrile)tungsten(0) B. Tricarbonyltris(propionitrile)molybdenum(0) C. Tricarbonyltris(propionitrile)chromium(0) 7. The Synthesis of Molybdenum and Tungsten Dinitrogen Com plexes: MoCl 4 (L) 2 , MoCl 3 (L) 3 (L = NCMe, THF), Mo(N 2 ) 2 (dppe) 2 , W(N 2 ) 2 (dppe) 2 A. Bis(acetonitrile)tetrachloromolybdenum(IV), [MoCl 4 (CH 3 CN) 2 ] B. Tetrachlorobis(tetrahydrofuran)molybdenum(IV), [MoCl 4 (THF) 2 ] C. Trichlorotris(tetrahydrofuran)molybdenum(III), [MoCl 3 (THF) 3 ] D. Trichlorotris(acetonitrile)molybdenum(III), [MoCl 3 (MeCN) 3 ] E. ira«5-Bis(dinitrogen)bis[ 1,2-ethanediylbis-(diphenylphosphine)]molybdenum(0), trans-[Mo(N 2 ) 2 (Ph 2 PCH 2 CH 2 PPh 2 ) 2 ] F. Tetrachlorobis(triphenylphosphine)tungsten(IV), [WCl 4 (PPh 3 ) 2 ] 40 G. Tetrachloro[l,2-ethanediylbis(diphenylphosphine)]tungsten(IV), [WCl 4 (Ph 2 PCH 2 CH 2 PPh 2 )]... H. irans-Bis(dinitrogen)bis[l,2-ethanediylbis(diphenylphosphine)]tungsten(0), irans-[W(N 2 ) 2 (Ph 2 PCH 2 CH 2 PPh 2 ) 2 ] 8. irans-Bis[l,2-ethanediylbis(diphenylphosphine)]bis-(isocyanomethane)tungsten(O): trans-[W(CNR) 2 (Ph 2 PCH 2 CH 2 PPh 2 ) 2 ] 9. Tricarbonyl(cycloheptatriene)molybdenum(0): Mo(CO) 3 (C 7 H ...

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“…More recently, we have investigated the use of cyclohexadiene-molybdenum complexes for the construction of quaternary carbon centres. The 1,4-dimethyl substituted diene complex 34 is readily prepared as shown using methodology developed by Bottrill & Green (1977). We have found that this complex reacts with a variety of carbon nucleophiles to generate…”

Section: Fe(co)3mentioning

confidence: 99%

Approaches to natural-product synthesis with organometallic systems based on iron, molybdenum and manganese

Pearson

1988

Phil. Trans. R. Soc. Lond. A

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New methods for the construction of quaternary carbon centres, with organoiron and organomolybdenum chemistry, are presented. Regiocontrolled addition of tin enolates to substituted cyclohexadienyliron tricarbonyl complexes leads to a new approach to trichothecene synthesis, illustrated by a short total synthesis of ( + )- trichodiene. A new coupling reaction of alkenes and diene-Fe(CO) 3 units is described, the outcome of which is equivalent to a [6 + 2] ene reaction. Some applications of arene-manganese tricarbonyl complexes to the preparation of substituted diaryl ethers are discussed, in the context of synthetic approaches to the glycopeptide antibiotics ristocetin A and vancomycin. Finally, stereocontrolled nucleophilic addition to cycloheptadienyliron complexes is illustrated and applied to a synthesis of the Prelog-Djerassi lactone.

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Reactions of co-ordinated ligands. Part 17. The synthesis and reactions of cationic η⁵-indenyl- and η-cyclopentadienyl-molybdenum complexes containing 1,3-diene and acetylene ligands

Cited by 64 publications

References 0 publications

EPR and NMR spectroscopic studies of [MoL2(MeCCMe)Cp]z (L = P-donor ligand, z = 0 and 1): fluxionality in a metal–alkyne redox pair

EPR and NMR spectroscopic studies of [MoL2(MeCCMe)Cp]z (L = P-donor ligand, z = 0 and 1): fluxionality in a metal–alkyne redox pair

Tetracarbonyldichlorodirhodium

Approaches to natural-product synthesis with organometallic systems based on iron, molybdenum and manganese

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Reactions of co-ordinated ligands. Part 17. The synthesis and reactions of cationic η5-indenyl- and η-cyclopentadienyl-molybdenum complexes containing 1,3-diene and acetylene ligands

Cited by 64 publications

References 0 publications

EPR and NMR spectroscopic studies of [MoL2(MeCCMe)Cp]z (L = P-donor ligand, z = 0 and 1): fluxionality in a metal–alkyne redox pair

EPR and NMR spectroscopic studies of [MoL2(MeCCMe)Cp]z (L = P-donor ligand, z = 0 and 1): fluxionality in a metal–alkyne redox pair

Tetracarbonyldichlorodirhodium

Approaches to natural-product synthesis with organometallic systems based on iron, molybdenum and manganese

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Reactions of co-ordinated ligands. Part 17. The synthesis and reactions of cationic η⁵-indenyl- and η-cyclopentadienyl-molybdenum complexes containing 1,3-diene and acetylene ligands