Synthesis and crystal structure of bis[μ-<i>N</i>,<i>N</i>-bis(2-aminoethyl)ethane-1,2-diamine]bis[<i>N</i>,<i>N</i>-bis(2-aminoethyl)ethane-1,2-diamine]-μ<sub>4</sub>-oxido-hexa-μ<sub>3</sub>-oxido-octa-μ<sub>2</sub>-oxido-tetraoxidotetranickel(II)hexatantalum(V) nonadecahydrate
Acta crystallographica. Section E, Crystallographic communications