Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1572-8927
    Keywords: Kinetics of solvolysis ; complexes ; water and ethylene carbonates ; water and propylene carbonate ; solvent structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The kinetics of the solvolysis of trans-[Coen2Cl2]+ have been followed in mixtures of water with either ethylene carbonate or propylene carbonate over a range of temperatures. Both the enthalpy and entropy of activation for the first order loss of a chloride ion to give [Coen2Cl]2+ in water + ethylene carbonate show a maximum at low mole fractions of ethylene carbonate. As similar extrema in ΔH
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of solution chemistry 15 (1986), S. 211-219 
    ISSN: 1572-8927
    Keywords: Solubility ; ions ; free energy of transfer ; spectrophotometry ; t-butyl alcohol ; chlorobis (1,2-diaminoethane) cobalt(III)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The solubility of trans-(Coen2Cl2)2ReCl6 has been determined in water and in water +t-butyl alcohol mixtures. By comparzng these values with the solubility of Cs2ReCl6 in similar mixtures, values for the difference in free energy of transfer, ΔG t o (i) between water and water + t-butyl alcohol can be calculated for i =[Coen2Cl2]+ and Cs+. The introduction of ΔG t o (Cs+) then produces values for ΔG t o (Coen2Cl2 +). The difference in ΔG t o (i) for i=[Coon2Cl]2+ in the transition state and i=[Coen2Cl2]+ in the initiad' tate for the solvolysis of the trans-[Coen2Cl2]+ ion in water + t-butyl alcohol can be derived from the application of a free energy cycle: using ΔG t o (Coen2Cl2 +) determined from the solubility measurements allows the calculation of values for ΔG t o (Coen2Cl2+). ΔG t o (i) in water + t-butyl alcohol for bis (1,2-diamino) cobalt (III) ions are compared with ΔG t o (i) for tetrapyridinecobalt (III) ions.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 18 (1986), S. 529-536 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Following the kinetic investigation of the solvolysis of a range of cobalt(III) complexes in mixtures of water + cosolvent wherethe cosolvent enhances the solvent structure and decreases the dielectric constant, kinetic data are now reported for such a solvolysis in water + urea where urea acts as a structure breaker and enhances the dielectric constant. A plot of log (rate constant) against reciprocal of the dielectric constant shows that differential effects of changes in solvent structure occur between the initial and the transition states and, as in theinvestigations using structure-enhancing cosolvents, the principal effect of change in solvent structure on the cobalt(III) cation occurs on the penta-coordinated ion in the transition state.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...