Abstract
The complexation of tetraphenylporphyrin free base (PI) and its N-methyl (PII) and NaNb-dimethyl (PIII) derivatives by p-nitrophenol is studied by u.v.-visible and i.r. spectroscopy in benzene and dichloromethane. PI and PII form a 2:1 and a 1:1 complex, respectively, with p-nitrophenol through intermolecular hydrogen bonding in benzene and an undissociative ion pair in dichloromethane. A study of the porphyrin concentration in the presence of excess of p-nitrophenol shows, in CH2Cl2, a self-association of PI, which is described as the dimerization of the monocomplexed ion-pair species. Equilibrium constants are determined for several complexation reactions as well as for the dimerization process.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Chemical Society, Perkin Transactions 2
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
