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4,4′-Dimethyl-2,2′-[1,1′-(ethane-1,2-diyldinitrilo)diethylidyne]diphenol

✍ Scribed by Chakkaravarthi, G. ;Anthonysamy, A. ;Balasubramanian, S. ;Manivannan, V.

Publisher
International Union of Crystallography
Year
2007
Tongue
English
Weight
537 KB
Volume
63
Category
Article
ISSN
1600-5368

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✦ Synopsis

The title compound, C~20~H~24~N~2~O~2~, is a Schiff base compound derived from the condensation of 2-hydroxy-5-methylacetophenone and 1,2-diaminoethane in ethanol. The molecule has crystallographic twofold rotation symmetry. The molecular structure is stabilized by weak intramolecular O—H...N interactions and the crystal packing is stabilized by weak intermolecular C—H...O and C—H...π interactions.

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2,2′-[1,1′-(Ethylenedioxydinitrilo)dieth
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The title compound, C 18 H 20 N 2 O 4 , has been characterized structurally by 1 H NMR and X-ray crystallography. The molecule is centrosymmetric. The two benzene rings are parallel to each other with a perpendicular interplanar spacing of ca 1.4 A ˚. Intramolecular O-HÁ Á ÁN hydrogen bonds are form

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The title molecule, C 30 H 28 N 2 O 2 , (I), resides on a crystallographic inversion centre located at the midpoint of the N-N bond. It contains an intramolecular O-HÁ Á ÁN interaction [OÁ Á ÁN = 2.572 (2) A ˚] and a weak C-HÁ Á ÁN contact [CÁ Á ÁN = 2.752 (2) A ˚]. There are no intermolecular inter

(1R,2R)-(+)-4,4′-Di-tert-butyl-2,2′-[1,2
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✍ Korendovych, Ivan V. ;Makhlynets, Olga V. ;Buzak, Sara K. ;Flook, Margaret M. ;K 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 281 KB

The crystal structure of the title compound, C~36~H~40~N~2~O~2~, has been determined at 173 (2) K. The molecule has __C__ ~2~ symmetry and the asymmetric unit contains one half-molecule. An intramolecular O—H...N hydrogen bond is formed between the phenol OH group and the Schiff base N atom.