
%0 Journal Article
%A Gatehouse, BM 
%A Mclachlan, G 
%A Martin, LL 
%A Martin, RL 
%A Spiccia, L 
%T Crystal and Molecular Structure of the Peroxo-Bridged Dimer [(trenen)CoO<sub>2</sub>Co(trenen)] (ClO<sub>4</sub>)<sub>4</sub> Where trenen = N,N,N'-Tris(2-aminoethyl)-ethane-1,2-diamine
%J Australian Journal of Chemistry
%D 1991/03/01
%V 44
%N 3
%P 351-359
%K 
%R https://doi.org/10.1071/CH9910351
%U https://www.publish.csiro.au/paper/CH9910351 
%X The preparation and crystal structure of the brown crystalline cobalt(III) dimer [( trenen )CoO2-Co( trenen )](ClO4)4 is described where the pentadentate ligand trenen is N,N,N&#8242;- tris (2-aminoethyl)ethane-1,2-diamine. The compound forms monoclinic crystals with a 13.132, b 14.214, c 8.906&#506; and &#946; 91.53&#176;, and two formula units in the unit cell, in space group P21/n. The nitrogen atoms of the trenen ligand occupy five of the six slightly distorted octahedral sites about each cobalt atom with a peroxo bridge linking the two Co( trenen ) moieties through the sixth site. The Co-O-O-Co dihedral angle is 180&#176;, the molecule possesses a centre of symmetry, and the peroxo bridging group is situated trans to the secondary nitrogen atom attached to each cobalt atom (the s,s -isomer). The electronic spectrum displays a strong (&#1108; 13700 dm3 mol-1 cm-1) absorption band at 302 nm which is typical of peroxo -bridged dicobalt complexes with a single transplanar CoO2Co bridge. 
