States, interconversion

Komorowski L (1993) Hardness Indices for Free and Bonded Atoms. 80 45-70 Konig E (1991) Nature and dynamics of the Spin-State Interconversions in Metal Complexes. 76 51-152... 

Nature and Dynamics of the Spin-State Interconversion in Metal Complexes... 

Individual Spin-State Interconversion Rate Studies. 119... 

The most significant results obtained for complexes of iron(II) are collected in Table 3. The data derive from laser Raman temperature-jump measurements, ultrasonic relaxation, and the application of the photoperturbation technique. Where the results of two or three methods are available, a gratifying agreement is found. The rate constants span the narrow range between 4 x 10 and 2 X 10 s which shows that the spin-state interconversion process for iron(II) complexes is less rapid than for complexes of iron(III) and cobalt(II). 

Table 3. Rate constants and activation parameters for the LS HS and HS LS unimolecular spin-state interconversions in iron(II) complexes...

Several observations indicate spin-state interconversion rates faster than could be measured with the applied technique. Thus an upper limit for the relaxation time of 30 ns has been set for [Fe((CH3)2NC(S)S)3] [34], whereas the estimate r < 1 ns has been obtained for the complex [Fe(benzac2trien)]PFg... 

In a discussion of the mechanism of spin-state interconversion on the basis of the simplified potential energy curves presented above, considerable attention... 

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