Crystal structures of (μ<sub>2</sub>-η<sup>2</sup>,η<sup>2</sup>-4-hydroxybut-2-yn-1-yl 2-bromo-2-methylpropanoate-κ<sup>4</sup><i>C</i><sup>2</sup>,<i>C</i><sup>3</sup>:<i>C</i><sup>2</sup>,<i>C</i><sup>3</sup>)bis[tricarbonylcobalt(II)](<i>Co—Co</i>) and [μ<sub>2</sub>-η<sup>2</sup>,η<sup>2</sup>-but-2-yne-1,4-diyl bis(2-bromo-2-methylpropanoate)-κ<sup>4</sup><i>C</i><sup>2</sup>,<i>C</i><sup>3</sup>:<i>C</i><sup>2</sup>,<i>C</i><sup>3</sup>]bis[tricarbonylcobalt(II)](<i>Co—Co</i>)
Acta crystallographica. Section E