Effect of oxygen on metathesis of cis-2-pentene by a binary catalyst system of W(CO)5P(C6H5)3 and (C2H5)AlCl2

doi:10.1016/0021-9517(74)90028-1

Paper

Effect of oxygen on metathesis of cis-2-pentene by a binary catalyst system of W(CO)5P(C6H5)3 and (C2H5)AlCl2

Published 1974 · Jean-Marie Basset, G. Coudurier, R. Mutin

Journal of Catalysis

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22

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Abstract

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Oxygen significantly enhances the efficiency of metathesis of cis-2-pentene by the binary catalyst system W(CO)5P(C6H5)3 and (C2H5)AlCl2, favoring electrophilic attack on tungsten through carbonyl ligands.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

Effect of oxygen on metathesis of cis-2-pentene by a binary catalyst system of W(CO)5P(C6H5)3 and (C2H5)AlCl2

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References

Disproportionation of cis-2-pentene over MoAl2O3 and CozMoAl2O3. Kinetic study and nature of active site

The active site for the MoAl2O3 catalyst is Mo 6+, with a maximum activity at 7% Mo content and a high selectivity for the cis isomer of butene at low temperature.

Aluminum halide effects on metathesis of 2-pentene by a binary catalyst system of tungsten hexachloride and n-butyllithium

Aluminum halides can accelerate metathesis of mixed 2-pentene by tungsten hexachloride and n-butyllithium, resulting in high conversion and selectivity in 15 minutes.

Electronic structures of metal hexacarbonyls

Electronic spectra reveal that empty n--antibonding orbitals play a crucial role in the stability of transition metal carbonyls, with high-energy d-d bands occurring at high energies.

Citations

Tungsten carbonyl precursors in catalyzed olefin metathesis II. Homegeneous olefin Metathesis by the RnX3-n SnW(CO)3π-C5H5/iBuAlCl2/O2 System

Tungsten carbonyl precursors activated by iBuAlCl2 in the presence of oxygen show high conversion rates and good selectivity for 2-pentene metathesis, with no significant effect on stereoselectivity for cis-2-pentene.

The polymerization of propargyl halides (Cl, Br) using M(CO)5PPh3/RxAlCl3-x (M=Mo,W) as catalysts

Propargyl halides can be polymerized using M(CO)5PPh3/RxAlCl3-x catalysts, with Mo being more effective than W, resulting in highly conjugated polymers with stable properties up to 150°C.

New dinitrosylmolybdenum catalytic systems for olefin metathesis

Dinitrosylmolybdenum complexes with Et4Sn and AlCl3 form catalytically active systems for olefin metathesis, effectively catalyzing acyclic and cyclic olefin metathesis.

Theoretical Chemistry Comes Alive: Full Partner with Experiment

Advances in computational techniques and electronic wave functions have made theoretical chemistry a full partner with experiment in chemical research, enabling predictions of spectroscopic quantities and catalytic processes.

Temperature induced effects in the coadsorption system: CO/D2/Ni(100)☆

Temperature-dependent changes in the CO/D2/Ni(100) system reveal three forms of CO(a) with one unique form found in the intermediate temperature range of 130-215 K, affecting bonding geometry and repulsion.