Tetrakis(1,2-dimethoxyethane-κ<sup>2</sup><i>O</i>,<i>O</i>′)ytterbium(II) bis(μ<sub>2</sub>-phenylselenolato-κ<sup>2</sup><i>Se</i>:<i>Se</i>)bis[bis(phenylselenolato-κ<i>Se</i>)mercurate(II)]
Acta crystallographica. Section E