Chiral ureas with two electronegative substituents at 1-N: an unusual case of coexisting pyramidal and almost planar 1-N atoms in the same crystal.
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R. Zubatyuk | O. Shishkin | A. Mazepa | R. G. Kostyanovsky | V. G. Shtamburg | A. Tsygankov | A. Prosyanik | Dmitriy A Olefir