
%0 Journal Article
%A Dearie, CM 
%A Dyson, RM 
%A Hambley, TW 
%A Lawrance, GA 
%A Maeder, M 
%A Tannock, GA 
%T Crystal Structure of a Luminescent Europium(III) Complex: Probing the Active Species in Dissociation-Enhanced Lanthanide Fluoroimmunoassay
%J Australian Journal of Chemistry
%D 1993/04/01
%V 46
%N 4
%P 577-582
%K 
%R https://doi.org/10.1071/CH9930577
%U https://www.publish.csiro.au/paper/CH9930577 
%X The highly luminescent complex [ Eu ( fnac )2( topo )2(NO3)], which contains the two component ligands [ fnac, the anion of 4,4,4-trifluoro-1-(2-naphthyl)butane-1,3-dione, and topo, trioctylphosphine oxide] of the luminescent species in the dissociation-enhanced lanthanide fluoroimmunoassay method, has been prepared and defined by an X-ray crystal structure analysis. The complex crystallizes in the Ccmm space group, a 17.064(18), b 30.254(21) and c 16.391(4) &#506;, Z = 4, and a single-crystal X-ray structure determination refined to R 0.056 for 1772 independent 'observed' reflections. The complex exhibits a dodecahedral EuO8 structure with bidentate nitrate ion [ Eu -O 2.512(10)&#506;], two bidentate substituted acetylacetonate ( fnac )[ Eu -O 2.379(9), 2.400(9)&#506;], and two monodentate long-chain phospine oxide ( topo ) ligands [ Eu -O 2.295(9)&#506;]. 
