Bis{[(η<sup>5</sup>)-cyclopentadienyl]tris(diethyl phosphito-κ<sup>3</sup> <i>P</i>,<i>P</i>′,<i>P</i>′′)cobaltate(III)-κ<sup>3</sup> <i>O</i>,<i>O</i>′,<i>O</i>′′]oxovanadium(IV)}-μ-oxalate
Acta crystallographica. Section E