Room temperature synthesis of fluorinated graphite intercalation compounds with low fluorine loading of host matrix

[Display omitted] •Composition of graphite fluoride C2Fx is controlled by changing the ratio BrF3/Br2 in reaction.•The size of sp2 carbon regions increases with the decrease of x in C2Fx.•Replacement of guest molecules in C2Fx has little effect on the matrix properties.•Br2 guests in C2Fx are difficultly substitutable for CH3CN when x 0.6, while two types of guests (CH3CN and Br2) were present between the layers with the lower fluorine loading. The Van der Waals forces hold CH3CN molecules in the (C2Fx)n host. The interaction of Br2 molecules with sp2-carbon regions remained in the C2Fx layers has donor-acceptor type. The models of guest molecules packing in host matrices (C2Fx)n are considered using the data on the stoichiometry and X-ray diffraction analysis.