
%0 Journal Article
%A Figgis, BN 
%A Kennedy, BJ 
%A Murray, KS 
%A Reynolds, PA 
%A Wright, S 
%T Magnetic exchange in <I>trans</I>-Tetraamminedinitronickel(II)
%J Australian Journal of Chemistry
%D 1982/09/01
%V 35
%N 9
%P 1807-1813
%K 
%R https://doi.org/10.1071/CH9821807
%U https://www.publish.csiro.au/paper/CH9821807 
%X Measurements of the magnetic anisotropy of single crystals, and the high-field magnetization of powder specimens of trans-tetraamminedinitronickel(II), Ni(NH3)4(NO2)2, have been determined. These, and previous susceptibility measurements, are fitted by a one- or two-dimensional Heisenberg exchange model in which the total exchange, &#8721;ijJij equals about -2 to -3 cm-1. The absolute magnitudes of the single-ion anisotropy parameters, D and E, are required to be smaller than about 2 cm-1. The previous explanation of the low-field magnetic susceptibility as arising from a D value of 10.4 cm-1 is now an inadequate description of all the magnetic data. 
