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Volumn 21, Issue 26, 2002, Pages 5688-5691

Determination of ruthenium-phosphorus bond dissociation energies by ES-FTICR mass spectrometry

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION ENERGY; CHEMICAL BONDS; COMPLEXATION; DISSOCIATION; MASS SPECTROMETRY; PHOSPHORUS;

EID: 0038002043     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om020308u     Document Type: Article
Times cited : (14)

References (45)
  • 5
    • 0011930679 scopus 로고
    • Marks, T. J., Ed.; American Chemical Society: Washington, DC
    • Freiser, B. S. In Bonding Energetics in Organometallic Compounds; Marks, T. J., Ed.; American Chemical Society: Washington, DC, 1990; Vol. 428, p 55.
    • (1990) Bonding Energetics in Organometallic Compounds , vol.428 , pp. 55
    • Freiser, B.S.1
  • 11
    • 0038250785 scopus 로고    scopus 로고
    • See the Supporting Information for details of characterization and properties of 1
    • See the Supporting Information for details of characterization and properties of 1.
  • 12
    • 0037913266 scopus 로고    scopus 로고
    • 3)
    • 3).
  • 13
    • 0037913229 scopus 로고    scopus 로고
    • note
    • -, respectively, but so far neither of these bis(diphenylphosphine) intermediates has been observed by NMR spectroscopy.
  • 15
    • 0037913230 scopus 로고    scopus 로고
    • note
    • Techniques do exist for manipulating air- and moisture-sensitive compounds in ES experiments and also for activating neutral species for electrospray. (See ref 5a and references therein.)
  • 19
    • 0038589261 scopus 로고    scopus 로고
    • note
    • Cone voltage refers to the potential difference between the electrospray nozzle and the skimmer, through which ions pass for mass detection. This value is also referred to as the nozzle-to-skimmer potential difference (PD).
  • 20
    • 0038250754 scopus 로고    scopus 로고
    • note
    • The dimeric structure is supported by the isotopic pattern observed.
  • 23
    • 0037913217 scopus 로고    scopus 로고
    • note
    • (c) Ions generated by electrospray are de-energized in a hexapole ion trap prior to injection into the ICR cell.
  • 26
    • 0037913221 scopus 로고    scopus 로고
    • note
    • ion are the masses (in atomic mass units) of the target molecule and reactant ion, respectively, z is the number of charges on the reactant ion, S (=0.814) is the geometry factor for the 6 cm × 6 cm cylindrical ICR cell, and d is the diameter of the cell (0.060 m).
  • 27
    • 0037575157 scopus 로고    scopus 로고
    • note
    • A correlated sweep centered on m/z 775 was used to ensure that only intact 1 entered the ICR cell. See the Supporting Information for details.
  • 28
    • 0037575156 scopus 로고    scopus 로고
    • note
    • target are the average radii (in m) of the ion and target molecule, P (in atm) is the pressure of the target gas, T (K) is the temperature of the cell/target gas, and the other symbols are as defined above.
  • 29
    • 0037575151 scopus 로고    scopus 로고
    • note
    • 2 pressure in the collision cell (vide infra).
  • 30
    • 0038250748 scopus 로고    scopus 로고
    • See the Supporting Information for details of the choice of CID delay times
    • See the Supporting Information for details of the choice of CID delay times.
  • 31
    • 0037913218 scopus 로고    scopus 로고
    • note
    • More detailed analysis (vide infra) indicates that this estimate is too low but confirms that single-collision conditions do predominate for a CID delay of 0.05 s.
  • 33
    • 0037575150 scopus 로고    scopus 로고
    • note
    • rf = 50 μs by 50/x, where x is the excitation time for the measurement.
  • 34
    • 0000233568 scopus 로고
    • 2 pressure in the ICE cell ≈6 times higher than that recorded by the manifold ion gauge, See ref 22 and the Supporting Information for details of the calculation of collisional probabilities for these Poisson distributions. (26) (a) Graul, S. T.; Squires, R. R. Int. J. Mass Spectrom. Ion Processes 1987, 81, 183.
    • (1987) Int. J. Mass Spectrom. Ion Processes , vol.81 , pp. 183
    • Graul, S.T.1    Squires, R.R.2
  • 39
    • 0038250747 scopus 로고    scopus 로고
    • See the Supporting Information for details of the linear regression analysis
    • See the Supporting Information for details of the linear regression analysis.
  • 43
    • 0042971433 scopus 로고
    • Estimated electronic parameters for phosphines indicate a decrease in ligand donor ability with variation of substituents in the order Me > Ph. > H: Toiman, C. A. J. Am. Chem. Soc. 1970, 92, 2953.
    • (1970) J. Am. Chem. Soc. , vol.92 , pp. 2953
    • Toiman, C.A.1
  • 44
    • 0038250753 scopus 로고    scopus 로고
    • note
    • The similarity of our BDE values to those measured by solution calorimetry for Cp*Ru systems is reassuring on this count. Inaccuracies arising from a range of accessible vibrational/rotational states may be insignificant on the scale of BDE being measured and within the levels of precision possible for the FTICR technique.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.