
%0 Journal Article
%A Buckingham, DA 
%A Gorges, RC 
%A Henry, JT 
%T The polymeric nature of Bis(acetylacetonato)-, Bis(trifluoroacetylacetonato)-, Bis(hexafluoroacetylacetonato)-, and Bis(2,2,6,6-tetramethylheptane-3,5-dionato)-iron(II)
%J Australian Journal of Chemistry
%D 1967/02/01
%V 20
%N 2
%P 281-296
%K 
%R https://doi.org/10.1071/CH9670281
%U https://www.publish.csiro.au/paper/CH9670281 
%X The preparations of bis(acetylacetonato)iron(II), Fe aca2; bis(trifluoroacetylacetonato)iron(II), Fe tfa2; bis(hexafluoroacetylacetonato)iron(II), Fe hfa2; and bis(2,2,6,6- tetramethylheptane-3,5-dionato)iron(II), Fe dpm2, are described. Cryoscopic and ebullioscopic molecular weight measurements show that these complexes are monomeric in dilute benzene solutions. Fe aca2 approaches a hexamer at 5° in concentrated benzene solutions, with Fe tfa2 and Fe hfa2 having maximum polymerization numbers of 1.63 and 1.5 respectively. Visible absorption spectra support the molecular weight data. Powder photographs show that Fe dpm2 is a tetrahedral monomer and that Fe tfa2 and Fe hfa2 are isomorphous. 
