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- [1] CHEMISTRY OF THE PHENOXATHIINS AND ISOSTERICALLY RELATED HETEROCYCLES .30. THE CRYSTAL AND MOLECULAR-STRUCTURE OF 2-AZAPHENOXATHIIN 2-OXIDE - FURTHER EVIDENCE IN SUPPORT OF THE RELATIONSHIP BETWEEN THE C-13-NMR CHEMICAL-SHIFT OF C-10A RESONANCE AND THE MOLECULAR DIHEDRAL ANGLETU JOURNAL OF HETEROCYCLIC CHEMISTRY, 1984, 21 (02) : 449 - 454
- [5] CHEMISTRY OF THE PHENOXATHIINS AND ISOSTERICALLY RELATED HETEROCYCLES .31. SYNTHESIS OF THE 1,3-DIAZAPHENOXATHIIN RING-SYSTEM AND THE RELATIONSHIP OF THE C-13-NMR CHEMICAL-SHIFT OF THE C-10A RESONANCES TO THE MOLECULAR DIHEDRAL ANGLE DETERMINED BY X-RAY-DIFFRACTION - A FURTHER INVESTIGATION JOURNAL OF HETEROCYCLIC CHEMISTRY, 1984, 21 (04) : 995 - 1000
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