Solid-state cis–trans isomerization reaction of (η5-MeC5H4)W(CO)2P(OiPr)3I

Bala, Muhammad D.; Levendis, Demetrius C.; Coville, Neil J.

doi:10.1016/j.jorganchem.2006.01.014

Cited by 9 publications

(8 citation statements)

References 47 publications

(17 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The IR spectra of the cis and trans isomers are easily distinguished by the relative intensities of the two ν(CO) absorptions. In the cis isomer the band due to the symmetric CO stretching vibration is more intense than the antisymmetric one, while in the trans isomer the antisymmetric CO stretching vibration is the most intense . The IR spectra of 5 − 8 show ν(CO) absorptions of the Cp derivatives at higher frequencies than those of Cp* and Cp Bz derivatives, indicating the weaker electron-donating properties of the Cp ring compared to Cp* and Cp Bz .…”

Section: Resultsmentioning

confidence: 95%

Molybdenum(II) Complexes Containing Cyclopentadienyl-Functionalized N-Heterocyclic Carbenes: Synthesis, Structure, and Application in Olefin Epoxidation

et al. 2009

View full text Add to dashboard Cite

A set of four different (Cp x -NHC)Mo(CO) 2 I (Cp x =Cp, Cp*, and Cp Bz , NHC=N-heterocyclic carbenes) complexes has been prepared from the one-pot reaction of [MoCl(η 3 -C 3 H 5 )(CO) 2 -(NCMe) 2 ] and the corresponding lithium NHC-cyclopentadienides. The modification of the Cp x -NHC affords a smooth way to tune the stereoelectronic properties of these new molybdenum complexes. These compounds are air stable both in solution and in the solid state. Preliminary studies on the catalytic epoxidation with cis-cyclooctene and TBHP as oxidant show that the activity of the catalysts clearly depends on the nature of the Cp x -NHC ligand. The reaction proceeds smoothly toward epoxide; no diols or any other byproduct was detected along the reaction course.

show abstract

Section: Resultsmentioning

confidence: 95%

Molybdenum(II) Complexes Containing Cyclopentadienyl-Functionalized N-Heterocyclic Carbenes: Synthesis, Structure, and Application in Olefin Epoxidation

et al. 2009

View full text Add to dashboard Cite

show abstract

“…Combined IR, NMR, powder and single crystal XRD and thermomicroscopy studies were used to follow the kinetics of the isomerization process. The tungsten complex (g 5 -C 5 H 4 Me)-W(CO) 2 P(O i Pr) 3 I (Table 3 -36) represented a special case because it was the only one in which a unidirectional lat to diag transformation occurs in the melt [87]. Fig.…”

Section: Diagonal-lateral Isomerization Reactionsmentioning

confidence: 99%

“…The overall morphology of the crystal is retained even after the isomerization. (Reproduced from[87] with permission, copyright Elsevier B.V.)…”

mentioning

confidence: 99%

Organometallic chemistry in the melt phase

Bala

Coville

2007

Journal of Organometallic Chemistry

Self Cite

View full text Add to dashboard Cite

“…The IR spectrum of 1 provides further indication of a cis-configuration of CO ligands with the relative intensities I asym and I sym of m asym(CO) and m sym(CO) using the ratio I asym /I sym = tan 2h (2h = OCMo-CO bond angle) [75,76]. The 95 Mo NMR signal is shifted from À836 ppm in [CpMo(CO) 3 Cl] [77] downfield to À513 ppm in 1 and provides insight into the electronic situation of the metal.…”

Section: Synthesis and Characterization Ofmentioning

confidence: 99%