Multiple <i>Z</i>‘ in Carboxylic Acid−Pyridine Trimer Synthon and Kagomé Lattice in the Structure of 5-Methylpyrazine-2,3-dicarboxylic Acid
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We show the requirement of Z‘ ≥ 2 for assembling an acid−pyridine trimer synthon in small, dissymmetric molecules. 5-Methylpyrazine-2,3-dicarboxylic acid (1) forms the rare O−H···N trimer synthon between three symmetry-independent molecules in a Kagomé lattice. The two-dimensional layers organize in a chiral P65 crystal system stabilized by C−H···O helices.
创建时间：
2016-05-12
