Structures of strontium diformate and strontium fumarate. A synchrotron powder diffraction study

Kenny Sthl, Jens E.T. Andersen, Irene Shim, Stephan Christgau

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The crystal structures of strontium diformate in space groups P2 12121 ( form, 295 K), P412 12 (Β form, 334 and 540 K) and I41/amd ( form, 605 K), and strontium fumarate in space groups Fddd (Β form, 105 K) and I41/amd ( form, 293 K) have been determined from synchrotron X-ray powder diffraction data. Except for the -strontium diformate, all the structures are based on a diamond-like Sr-ion arrangement, as in strontium acetylene dicarboxylate. The formate ions are disordered in the phase owing to steric hindrance. The fumarate ions are disordered over four (α) or two (Β) symmetry-equivalent orientations. -Strontium fumarate crystallizes with a unique 90° carboxylate dihedral angle, and is stable up to 773 K.

Original languageEnglish
Pages (from-to)481-487
Number of pages7
JournalActa Crystallographica Section B: Structural Science
Volume65
Issue number4
DOIs
Publication statusPublished - Aug 14 2009

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Powder Diffraction
Fumarates
Strontium
Synchrotrons
formic acid
Ions
Acetylene
Diamond
Dihedral angle
X-Ray Diffraction
X ray powder diffraction
Crystal structure

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

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title = "Structures of strontium diformate and strontium fumarate. A synchrotron powder diffraction study",
abstract = "The crystal structures of strontium diformate in space groups P2 12121 ( form, 295 K), P412 12 (Β form, 334 and 540 K) and I41/amd ( form, 605 K), and strontium fumarate in space groups Fddd (Β form, 105 K) and I41/amd ( form, 293 K) have been determined from synchrotron X-ray powder diffraction data. Except for the -strontium diformate, all the structures are based on a diamond-like Sr-ion arrangement, as in strontium acetylene dicarboxylate. The formate ions are disordered in the phase owing to steric hindrance. The fumarate ions are disordered over four (α) or two (Β) symmetry-equivalent orientations. -Strontium fumarate crystallizes with a unique 90° carboxylate dihedral angle, and is stable up to 773 K.",
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Structures of strontium diformate and strontium fumarate. A synchrotron powder diffraction study. / Sthl, Kenny; Andersen, Jens E.T.; Shim, Irene; Christgau, Stephan.

In: Acta Crystallographica Section B: Structural Science, Vol. 65, No. 4, 14.08.2009, p. 481-487.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Structures of strontium diformate and strontium fumarate. A synchrotron powder diffraction study

AU - Sthl, Kenny

AU - Andersen, Jens E.T.

AU - Shim, Irene

AU - Christgau, Stephan

PY - 2009/8/14

Y1 - 2009/8/14

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AB - The crystal structures of strontium diformate in space groups P2 12121 ( form, 295 K), P412 12 (Β form, 334 and 540 K) and I41/amd ( form, 605 K), and strontium fumarate in space groups Fddd (Β form, 105 K) and I41/amd ( form, 293 K) have been determined from synchrotron X-ray powder diffraction data. Except for the -strontium diformate, all the structures are based on a diamond-like Sr-ion arrangement, as in strontium acetylene dicarboxylate. The formate ions are disordered in the phase owing to steric hindrance. The fumarate ions are disordered over four (α) or two (Β) symmetry-equivalent orientations. -Strontium fumarate crystallizes with a unique 90° carboxylate dihedral angle, and is stable up to 773 K.

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