Dark red transparent crystals of [Co{1,4-C6H4(CN)2}2{NTf2}2][SnI{Co(CO)4}3]2 are obtained by reacting SnI4, Co2(CO)8 and 1,4-C6H4(CN)2 in the ionic liquid [EMIm][NTf2] (EMIm: 1-ethyl-3-methylimidazolium; NTf2: bis(trifluoromethylsulfonyl)imide). According to X-ray structure analysis based on single crystals, the title compound crystallizes in a triclinic manner and contains the novel 2∞[Co{1,4-C6H4(CN)2}2{NTf2}2] coordination network. This infinite 2D network is composed of Co2+ ions that are planarily interlinked by four 1,4-dicyanobenzene ligands. As a non-charged 2D network, Co2+ is furthermore coordinated by two [NTf2]− anions. The 2∞[Co{1,4-C6H4(CN)2}2{NTf2}2] layers are stacked on top of each other with SnI[Co(CO)4]3 molecules intercalated in distorted cubic gaps between the layers. The title compound is furthermore characterized by energy dispersive X-ray (EDX) analysis, thermogravimetry (TG), infrared spectroscopy (FT-IR) and optical spectroscopy (UV-Vis).
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