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| Figure 3 The H–bonded dimers in the orthorhombic polymorph of I, in which the molecules are related by the twofold axis. The hydrogen bonds are drawn by dashed lines. |
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| Figure 3 The H–bonded dimers in the orthorhombic polymorph of I, in which the molecules are related by the twofold axis. The hydrogen bonds are drawn by dashed lines. |