Crystal structures of (μ₂-η²,η²-4-hydroxybut-2-yn-1-yl 2-bromo-2-methylpropanoate-κ⁴C²,C³:C²,C³)bis[tricarbonylcobalt(II)](Co—Co) and [μ₂-η²,η²-but-2-yne-1,4-diyl bis(2-bromo-2-methylpropanoate)-κ⁴C²,C³:C²,C³]bis[tricarbonylcobalt(II)](Co—Co)

Abstract

The structures of two alkyne-hexacarbonyl-dicobalt complexes are reported, each with potential ATRP initiator substrates as substituents on the alkynes. The complexes each form tetrahedral C2Co2 cluster cores with classical sawhorse conformations, while a feature of the crystal packing is the formation of inversion dimers for both molecules.