摘要
Binary polyantimony clusters,namely[Cu_(2)Sb_(14)]^(4–) and [Ag_(2)Sb_(14)]^(4–),containing coinage metals,were successfully synthesized and characterized,in which two homoatomic Sb73–subunits are bridged by two coinage metals in η^(4):η^(1) and η^(1):η^(1) coordination modes,respectively.In[M_(2)Sb_(14)]^(4-),two bridging Cu ions and two Sb atoms form a planar rhombic unit,which was revealed to have antiaromatic properties by theoretical calculations.Further electron structure and bonding analysis confirmed the presence of delocalized bonds in the rhombic unit and the metallophilic interaction between two formal M^(+) ions.
基金
supported by the National Natural Science Foundation of China(Nos.92161102,22371140 to Z.-M.Sun and 22301143 to L.Qiao)
the Fundamental Research Program of Shanxi Province(202103021224028 and 202204021301010 to W.-J.Tian)
the Natural Science Foundation of Tianjin City(21JCZXJC00140 to Z.-M.Sun).
