Fig. 1: Views of the structure of P4@MFM-300(In) and binding modes of P4 in P4@MFM-300(In).

a Site P4(I); b Site P4(II); c Site P4(III). The shortest contacts are marked with dashed lines. Indium atoms are shown green, C – grey, O – red, P – pink, H – pale grey; d Packing of P4 molecules within the channels of MFM-300(In): view in (\(\bar{1}\)10) plane. P4(I) molecules are shown blue, P4(II) – orange, P4(III) – green. The numbers indicate crystallographic occupancy.