DFT calculations were carried out on compound Cp*2Ru 2(B8H14) that suggests a strong link with the pentalene complex Cp*2Fe2(C8H 6). Both compounds exhibit similar bonding modes and qualitatively related electronic structures. There are however, differences which are related to the weaker B-B bond in the B8H14 ligand as compared to the C-C bond in the pentalene ligand. © 2012 Elsevier B.V. All rights reserved.