2D metal-organic frameworks bearing butterfly-shaped metal-bis(dithiolene) linkers from dithiol-functionalized benzenedicarboxylic acid.

An assembly between 1,4-dicarboxylbenzene-2,3-dithiol (H 2 dcbdt) and different transition metal ions successfully produced 2D metal-organic frameworks (M-dcbdt, M = Ni, Co or Fe) composed of unprecedented butterfly-shaped metal-bis(dithiolene) (MS 4 ) linkers in one-pot fashion. Such strategy provides easier access to the [MS 4 ]-rich network and lowers the prerequisite to explore their applications.