Sandwich complexes are a class of inorganic compounds, typified by ferrocene. They feature a metal ion sandwiched between two aromatic ligands, which are bound to the central metal through haptic covalent bonds. Structurally similar species to ferrocene, with different metals or coordinating ligands, are generally termed metallocenes.
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The original articles can be read below and are free to access until 21st June 2016
On the nature of chemical bonding in the all-metal aromatic [Sb3Au3Sb3]3− sandwich complex
Xue-Rui You, Wen-Juan Tian, Da-Zhi Li,* Ying-Jin Wang, Rui Li, Lin-Yan Feng and Hua-Jin Zhai*
Phys. Chem. Chem. Phys., 2016, 18, 13423-13431
Theoretical studies on the bonding and electron structures of a [Au3Sb6]3− complex and its oligomers
Wan-Lu Li, Cong-Qiao Xu, Shu-Xian Hu and Jun Li*
Dalton Trans., 2016, Advance Article