Nanosecond Laser Photolysis of Ni(II) Tetraphenylporphyrin. Kinetic Studies on Association and Dissociation of Aliphatic Amines at the Axial Positions

Autor:	Haruna Adachi, Mikio Hoshino, Yoshio Miyazaki, Hiroyuki Suzuki
Rok vydání:	2003
Předmět:	Photodissociation chemistry.chemical_element Photochemistry Kinetic energy Laser Toluene Dissociation (chemistry) law.invention chemistry.chemical_compound Nickel chemistry law Tetraphenylporphyrin Physical and Theoretical Chemistry Excitation
Zdroj:	The Journal of Physical Chemistry A. 107:4445-4451
ISSN:	1520-5215 1089-5639
DOI:	10.1021/jp0219000
Popis:	Nanosecond laser photolysis studies of nickel(II) tetraphenylporphyrin, NiIITPP, in toluene solutions containing primary, secondary, and tertiary aliphatic amines were carried out for elucidation of the association and dissociation mechanisms of the axial amines. From the absorption spectroscopic studies, the primary amines were found to react with NiIITPP to give the six coordinate species. The secondary and the tertiary amines, however, give no coordinated species. The laser photolysis of NiIITPP in toluene containing primary amines revealed that the four- and six-coordinate species undergo mutual exchange upon laser excitation. In secondary amine−toluene solutions, the four coordinated species undergoes light-induced transformation to yield the six-coordinate species. However, no formation of the six coordinate species are observed for tertiary amine−toluene solutions of NiIITPP by photolysis. The six and four coordinate species produced by laser photolysis of the amine−toluene solutions decay accordin...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e286cfa790a1cb538d7d4f8534b393d6 https://doi.org/10.1021/jp0219000 Zobrazit plný text záznamu