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3-[α-(2-Hydroxy­ethyl­amino)benzyl­idene]-2-meth­oxy-2,3-dihydro-1,2λ5-benzoxaphosphinine-2,4-dione

✍ Scribed by Małecka, Magdalena ;Budzisz, Elżbieta

Publisher
International Union of Crystallography
Year
2006
Tongue
English
Weight
84 KB
Volume
62
Category
Article
ISSN
1600-5368

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✦ Synopsis

The title compound, C 18 H 18 NO 5 P, adopts the keto-amine tautomeric form, forming an intramolecular N-HÁ Á ÁO hydrogen bond. The oxaphosphinine ring has a screw-boat conformation. The molecules are linked by O-HÁ Á ÁO and C-HÁ Á ÁO hydrogen bonds and by astacking interaction.

📜 SIMILAR VOLUMES

3-[(1-Benzyl­amino)ethyl­idene]-2H-chrom
3-[(1-Benzyl­amino)ethyl­idene]-2H-chromene-2,4(3H)-dione
✍ Małecka, Magdalena ;Budzisz, Elżbieta 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 102 KB

The molecule of the title compound, C 18 H 15 NO 3 , adopts the keto-amine tautomeric form, with strong intramolecular N-HÁ Á ÁO hydrogen bonds classified as resonance-assisted hydrogen bonds (RAHBs). In the crystal structure, the molecules are stabilized by C-HÁ Á ÁO, C-HÁ Á Á andinteractions, form

4-[(4-Hydr­oxy-3-methoxy­benzyl­idene)am
4-[(4-Hydr­oxy-3-methoxy­benzyl­idene)amino]-1,5-dimethyl-2-phenyl-1,2-dihydro­pyrazol-3-one
✍ Wen, Puhong 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 245 KB

In the crystal structure of the title compound, C 19 H 19 N 3 O 3 , the benzene ring substituted by hydroxy and methoxy groups is essentially coplanar with the pyrazoline ring [dihedral angle = 12.9 (2) ], whereas the phenyl ring bonded directly to the pyrazoline ring forms a dihedral angle of 50.4