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2,2-Dimethyl-5-(pyrrolidin-2-yl­idene)-1,3-dioxane-4,6-dione

✍ Scribed by Sabino, Jose R. ;Damasceno, Fabiano ;Cunha, Silvio

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

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✦ Synopsis

This work describes the first solid-state structural study of a cyclic enaminone derivative from Meldrum's acid, C 10 H 13 NO 4 . The packing shows an infinite linear chain along [111] mediated by dimeric N-HÁ Á ÁO and nonclassical C-HÁ Á ÁO hydrogen-bonding interactions.

📜 SIMILAR VOLUMES

5-(Amino­methyl­ene)-2,2-dimethyl-1,3-di
5-(Amino­methyl­ene)-2,2-dimethyl-1,3-dioxane-4,6-dione
✍ da Silva, Luiz Everson ;Joussef, Antonio Carlos ;Silva, Luciano Luiz ;Foro, Sabi 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 248 KB

In the title compound C 7 H 9 NO 4 , the 1,3-dioxane-4,6-dione ring exhibits an envelope conformation. Intermolecular hydrogen bonds connect the molecules into chains. One intramolecular N-HÁ Á ÁO hydrogen bond to a carbonyl O atom is also observed, forming a six-membered ring.

5-(Anilinomethyl­ene)-2,2-dimethyl-1,3-d
5-(Anilinomethyl­ene)-2,2-dimethyl-1,3-dioxane-4,6-dione
✍ Vencato, Ivo ;Cunha, Silvio ;Ferrari, Jailton ;Sabino, Jose R. 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 146 KB

Single-crystal X-ray study T = 297 K Mean (C-C) = 0.004 A Disorder in main residue R factor = 0.076 wR factor = 0.204 Data-to-parameter ratio = 12.9 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

5-[(4-Methoxy­phenyl­amino)methyl­ene]-2
5-[(4-Methoxy­phenyl­amino)methyl­ene]-2,2-dimethyl-1,3-dioxane-4,6-dione
✍ Silva, Luiz Everson da ;Joussef, Antonio Carlos ;Nunes, Ricardo José ;Andrighett 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 222 KB

In the title compound, C 14 H 15 NO 5 , the 1,3-dioxane-4,6-dione ring exhibits a half-chair conformation. The amino H atom has one intra-and one intermolecular contact to carbonyl O atoms, with OÁ Á ÁH distances of 2.11 (2) and 2.31 (2) A ˚.