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Figure 3
(a) A view of the anionic chains in the isomorphic structures of (Ic) and (Id) [symmetry code: (i) -x+1, -y+1, -z+1], and (b) the crystal packing of (Id), showing the three-dimensional hydrogen-bonded network. Dashed lines represent N—H⋯S hydrogen bonds in dimers of 1-(diaminomethylene)thiouron-1-ium. |