
%0 Journal Article
%A Boas, JF 
%T Anomalous E.S.R. Spectra of Nickel Phthalocyanine: A Single-Crystal Study
%J Australian Journal of Chemistry
%D 1987/03/01
%V 40
%N 3
%P 557-564
%K 
%R https://doi.org/10.1071/CH9870557
%U https://www.publish.csiro.au/paper/CH9870557 
%X The e.s.r . spectra of single crystals of nickel(II) phthalocyanine show that there are two different magnetic centres, each with axial symmetry (centre 1, gll 2.0083, gl 2.0018; centre 2, gII 1.986, g1 2.006). In both cases, gllis along the molecular symmetry axis and gl is in the molecular plane. It is proposed that centre 1 arises from a &#960;-radical cation of the type [NiIIPc]x+O2x- analogous to that observed in NiPcI (Schramm et al-1). Centre 2 may arise from a NiIII species. 
