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Hydrogen bonding in 3-methyl­enecyclo­hexane-1,1-dicarboxylic acid

✍ Scribed by Foces-Foces, C. ;Rodríguez, M. L. ;Pérez-Hernández, N.

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

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✦ Synopsis

In the title structure, C~9~H~12~O~4~, the molecules assemble into a one-dimensional hydrogen-bonded chain of carboxylic dimers of extended C
~2~
^2^(12)[R
~2~
^2^(8)] notation.

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2-(2-Furyl­methyl)-1-methyl-3-oxo­cyclo­
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Single-crystal X-ray study T = 298 K Mean '(C±C) = 0.002 A Ê R factor = 0.039 wR factor = 0.113 Data-to-parameter ratio = 18.2 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

Hydrogen bonds in 1:1 complex of piperid
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The 1:1 complex between the zwitterionic piperidinium-3-carboxylate (P3C) and salicylic acid (SAL), P3CÁSAL, has been characterized by single crystal X-ray analysis, FTIR and NMR spectroscopy, and by DFT calculations. The crystals are orthorhombic, space group Pbca, with a = 11.6477( 7), b = 9.1754(