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  • [The spectra and thermodynamics of axial coordination reaction of tailed valine tetraphenylporphintozinc with pyrimidine].

[The spectra and thermodynamics of axial coordination reaction of tailed valine tetraphenylporphintozinc with pyrimidine].

Guang pu xue yu guang pu fen xi = Guang pu (2003-08-30)
C Ni, J Pan, Z Yao
ABSTRACT

The electronic absorption spectra and thermodynamics of axial coordination reaction of 5-(4-valine butoxyphenyl)-10,15,20-tri(4-chlorophenyl)porphintozinc with pyrimidine in CHCl3 were studied. Coordination numbers and equilibrium constants of axial coordination reaction were measured by visible spectra techniques. The changes of standard molar enthalpies and standard molar entropies of reaction were obtained from the plots of ln beta vs 1/T. The influence of temperature on the axial reaction was discussed.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
5,10,15,20-Tetraphenyl-21H,23H-porphine, 97%
Sigma-Aldrich
5,10,15,20-Tetraphenyl-21H,23H-porphine, ≥99%
Sigma-Aldrich
meso-Tetraphenylporphyrin, BioReagent, suitable for fluorescence, ≥99.0% (HPLC)