7-Isopropylidene-N 2,N 3,N 5,N 6-tetramethoxy-N 2,N 3,N 5,N 6-tetramethylbicyclo[2.2.1]hepta-2,5-diene-2,3,5,6-tetracarboxamide
نویسندگان
چکیده
Although the mol-ecular structure of the title compound, C22H32N4O8, displays a twofold symmetry of the mol-ecule including the meth-oxy and methyl substituents, no crystallographic twofold symmetry is observed in the X-ray structure analysis. The carbonyl O atoms alternately point to different sides of the plane defined by the carbonyl C atoms. Two meth-oxy groups are oriented inside the mol-ecules cavity. The H atoms of two methyl groups are disordered over two orientations and were refined using a split model.
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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