title: Observation on symmetry properties of sodium zinc(II)-2,9,16,23-phthalocyanine tetracarboxylate in water:NaOH solution.
abstract: The shift of the Q-band of sodium zinc(II)-2,9,16,23-phthalocyanine tetracarboxylate (ZnPc(COONa)4) to about 800 nm is attributed to the influence of the electron-donating property of the carboxylate groups substituted in the β-position. ZnPc(COONa)4 which was found to have a symmetry of D 2h characterized by a splitting of the Q transition. This splitting was interpreted by the formation of dianionic symmetric ZnPc(COONa)4 resulting from the dissociation of the pyrrole protons as well as the possibility of Na(+) dissolution of ZnPc(COONa)4 in the aqueous solution of NaOH.
authors.affiliation: Department of Physics, Faculty of Science, The Hashemite University, Zarqa, 13115, Jordan, salomar@hu.edu.jo.
authors.forename: Saleh
authors.initials: S
authors.lastname: Al-Omari
authors.forename: Nawash
authors.initials: N
authors.lastname: Alghezawi
authors.forename: Mousa
authors.initials: M
authors.lastname: Al-Noaimi
authors.forename: Akram
authors.initials: A
authors.lastname: Aqili
authors.forename: Ibrahim F
authors.initials: IF
authors.lastname: Al-Hamarneh
authors.forename: Mohammad
authors.initials: M
authors.lastname: Marashdeh