## Abstract The ionized geometric isomers maleic and fumaric acids ((__Z__)β and (__E__)βethenedicarboxylic acids) were studied by a variety of tandem mass spectrometric techniques. In agreement with much earlier work, the metastable ionized isomers do not reversibly interconvert. They do, however,
The molecular structure of fumaric acid and the deformation of carboxyl group geometry on crystallization
β Scribed by J.L. Derissen
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 466 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0022-2860
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π SIMILAR VOLUMES
## Phosphoenolpyruvic acid crystals, obtained by slow concentration of an aqueous solution, are triclinic, space group Pi, with a = 5.905( 5), b = 8.135(B), c = 14.095(15) A, a = 104.70(8), p = 97.72(8), y = 100.99(8)", and Z = 4. Two crystallographically independent phosphoenolpyruvic acid molecu
Dinnthronylidcne cth.mc crystalh7cs m three modifications of drastically dlffcrcnt ~lrwrec~ncc effictency-II: the strongly fluorcswnt modlflcntwn, excirner formatmn war found to be due to the 3.41 /\ spacing bctwccn parailcl stncked aromatic rings. The I.lck of cmwion from the non-fluorcsccnt rnodlf