1992
DOI: 10.1039/c39920001577
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Fluorination of tetrairidium dodecacarbonyl

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Cited by 20 publications
(21 citation statements)
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“…The subsequent molecular structure determination and vibrational spectra of the crystals indicate conclusively that in the crystalline solid only the meridional isomer is present and is apparently less soluble in HSO 3 F than the fac -isomer. The opposite observation has recently been reported for Ir(CO) 3 F 3 in a solution of anhydrous HF, where according to solution NMR at −78 °C ( 19 F and 13 C) and the IR spectrum of the isolated solid, the facial isomer is predominant. A fac- isomer is also suggested for Ir(CO) 3 I 3 …”
Section: Introductioncontrasting
confidence: 54%
“…The subsequent molecular structure determination and vibrational spectra of the crystals indicate conclusively that in the crystalline solid only the meridional isomer is present and is apparently less soluble in HSO 3 F than the fac -isomer. The opposite observation has recently been reported for Ir(CO) 3 F 3 in a solution of anhydrous HF, where according to solution NMR at −78 °C ( 19 F and 13 C) and the IR spectrum of the isolated solid, the facial isomer is predominant. A fac- isomer is also suggested for Ir(CO) 3 I 3 …”
Section: Introductioncontrasting
confidence: 54%
“…The complex is readily characterised in solution by NMR spectroscopy: The 19 F NMR spectrum consists of two mutually-coupled resonances, a doublet of triplets at d -451.2 and a lower field triplet of triplets at d -280.9. The high field resonance is typical of an F-trans-F interaction across Ir(III) 13, 21 and is, therefore, assigned to the two trans fluorines (F A ; Scheme 1). The remaining resonance is typical of an F-trans-CO moiety across Ir(III) (F B ).…”
Section: Resultsmentioning
confidence: 99%
“…For the all-trans isomers, the 19 F NMR resonances occur at substantially lower frequencies and the 2 J PF coupling constants are larger than those for the cis-difluoride isomers, as expected for the F-trans-F and F-cis-F arrangements. 13,[21][22][23][24] In the oxidations of the a-diimine complexes, the corresponding iridium(III) difluoride cations are formed as the single F-trans-F isomers, trans-,cis- 2), for which the shifts in d F to low frequency, in comparison to those for the related COD-complexes, mirror those for the related pairs of monodentate phosphine complexes.…”
Section: Methodsmentioning
confidence: 99%
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