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Figure 3 . C—H⋯O hydrogen bonding interactions between pyrazine N,N'-dioxide ligands and between perchlorate anions and pyrazine N,N'-dioxide ligands. Hydrogen bonds are shown as dashed lines. Symmetry codes: (iv) −y+3/4, x-1/4, −z+1/4;; (vi) y+3/4, x-3/4, −z+1/4; (vii) −x+3/2, −y+1/2, −z+1/2 Color scheme: Nd: green, C: grey, H: white, N:blue, O: red, Cl: yellow. |
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