The crystal structure of sodium hydrogen fumarate

Gupta, M. P.; Sahu, Rabinarayana

doi:10.1107/s0567740870005253

Cited by 12 publications

(4 citation statements)

References 2 publications

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“…A similar environment of the Na ion in Na-fumarate was confirmed in the solved crystal structure (Fig. 3) [9]. One can conclude that iron and sodium ions are surrounded by the oxygen atoms forming a coordination polihedron in the shape of an elongated octahedron.…”

Section: Introductionsupporting

confidence: 75%

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Dielectric and structural properties of iron- and sodium-fumarates

Skuban¹,

Džomié²,

Kapor³

et al. 2012

Journal of Research in Physics

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The behaviour of dielectric parameters such as the relative dielectric constant (ε''), the relative loss factor (ε'') and the ac conductivity of well known pharmaceutical materials Fe(II)-fumarate and Na-fumarate were studied as a function of temperature (in the range from 303K to 483 K) and frequency (in the range from 0.1 Hz to 100 kHz). The values of the conductivity are in the range of 10−5 Ω−1m−1 to 10−9 Ω−1m−1 for Fe(II)-fumarate and 10−6 Ω−1m−1 to 10−11 Ω−1m−1 for Na-fumarate. The conductivity of both materials increases with the increase in temperature and frequency. It was found that both ε' and ε'' decrease with increasing frequency and increase with increasing temperature for both materials. The highest changes are in the low frequency range. The obtained values of the dielectric parameters and conductivity suggest that these materials are dielectric with similar structure, most probably polymeric, with the mechanism of ionic conductivity.

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Section: Introductionsupporting

confidence: 75%

“…The inserted plots (Figs. [7][8][9][10][11][12] show the results of the measurements of ε 0 , ε 00 and σ ac as a function of frequency at some representative fixed temperature. Both samples exhibited dielectric dispersion.…”

Section: Resultsmentioning

confidence: 99%

Dielectric and structural properties of iron- and sodium-fumarates

Skuban¹,

Džomié²,

Kapor³

et al. 2012

Journal of Research in Physics

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“…Structural models of 1 and 2 derived from the high-resolution XRD data measured at 100 K are fully coincides with previously published results. 23 The crystal structure of 1 and 2 are similar: all oxygen atoms of H-bonded anionic chains coordinate to metal cations giving three-dimensional coordination polymer (Fig. 1).…”

Section: Resultsmentioning

confidence: 97%

Tuning of the double-well potential of short strong hydrogen bonds by ionic interactions in alkali metal hydrodicarboxylates

et al. 2015

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“…XRPD analysis of the obtained crystalline phase. Theoretical values were obtained for the reported crystal structures of H 2 FA, NaHFA, and Na 2 FA. ,, .…”

Section: Resultsmentioning

confidence: 99%

Solubility of Fumaric Acid and Its Monosodium Salt

Engel

Horst

Pieterse

et al. 2013

Ind. Eng. Chem. Res.

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Fumaric acid is a dicarboxylic acid applied in food industry and in some polymers. Currently, its fermentative production from renewable resources is receiving much attention, and crystallization is used to recover it. To determine the window of operation for crystallization from multicomponent fermentation mixtures, the aqueous solubilities of fumaric acid and its sodium salts were investigated. For fumaric acid, sodium hydrogen fumarate, and sodium fumarate, solubilities and pH increased in this order because of increasing polarity and dissociation. A mathematical model was developed to predict crystal type and amount as function of temperature and pH. The effect of glucose (up to 3.0 mmol·mol–1) on the solubility can be neglected, but ethanol (1.0 mmol·mol–1) slightly increased the solubility of fumaric acid and significantly decreased the solubility of the sodium salts, because the aqueous solution becomes less polar upon ethanol addition but not upon glucose addition.

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The crystal structure of sodium hydrogen fumarate

Cited by 12 publications

References 2 publications

Dielectric and structural properties of iron- and sodium-fumarates

Dielectric and structural properties of iron- and sodium-fumarates

Tuning of the double-well potential of short strong hydrogen bonds by ionic interactions in alkali metal hydrodicarboxylates

Solubility of Fumaric Acid and Its Monosodium Salt

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