Crystal structure of 2,3,5,6-tetrakis(pyridin-2-yl)pyrazine hydrogen peroxide 4.75-solvate
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چکیده
The structure of the title co-crystal, C24H16N6·4.75H2O2, consists of a 2,3,5,6-tetra-kis-(pyridin-2-yl)pyrazine coformer and hydrogen peroxide solvent mol-ecules in an overall ratio of 1:4.75. Three of the six H2O2 mol-ecules modelled in the structure were found to be cross-orientationally disordered over two positions with occupancy ratios 0.846 (9):0.154 (9), 0.75 (2):0.25 (2), and 0.891 (9):0.109 (9). In the crystal, all of the peroxide mol-ecules are linked into hydrogen-bonded chains that propagate parallel to the a axis. These chains are further linked by O-H⋯N hydrogen bonds to the pyridine groups of the main mol-ecule.
منابع مشابه
Crystal structures of N 2,N 3,N 5,N 6-tetrakis(pyridin-2-ylmethyl)pyrazine-2,3,5,6-tetracarboxamide and N 2,N 3,N 5,N 6-tetrakis(pyridin-4-ylmethyl)pyrazine-2,3,5,6-tetracarboxamide
The title compounds, C32H28N10O4· unknown solvent, (I), and C32H28N10O4, (II), are pyrazine-2,3,5,6-tetra-carboxamide derivatives. In (I), the substituents are (pyridin-2-ylmeth-yl)carboxamide, while in (II), the substituents are (pyridin-4-ylmeth-yl)carboxamide. Both compounds crystallize in the monoclinic space group P21/n, with Z' = 1 for (I), and Z' = 0.5 for (II). The whole mol-ecule of (I...
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