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Somphon W, Haller KJ, Rae AD, et al. Packing and polytypism in 1,10-phenanthrolin-1-ium (2-carboxyethyl)(2-carboxylatoethyl)dichlorostannate(IV). Acta Crystallogr B. 2006;62:255-61doi: 10.1107/S0108768106002461.
Somphon, W., Haller, K. J., Rae, A. D., & Ng, S. W. (2006). Packing and polytypism in 1,10-phenanthrolin-1-ium (2-carboxyethyl)(2-carboxylatoethyl)dichlorostannate(IV). Acta crystallographica. Section B, Structural science, 62255-61. https://doi.org/10.1107/S0108768106002461
Somphon, Weenawan, et al. "Packing and polytypism in 1,10-phenanthrolin-1-ium (2-carboxyethyl)(2-carboxylatoethyl)dichlorostannate(IV)." Acta crystallographica. Section B, Structural science vol. 62 (2006): 255-61. doi: https://doi.org/10.1107/S0108768106002461
Somphon W, Haller KJ, Rae AD, Ng SW. Packing and polytypism in 1,10-phenanthrolin-1-ium (2-carboxyethyl)(2-carboxylatoethyl)dichlorostannate(IV). Acta Crystallogr B. 2006 Apr;62:255-61. doi: 10.1107/S0108768106002461. Epub 2006 Mar 15. PMID: 16552159.
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Acta Crystallogr B. 2006 Apr;62:255-61. doi: 10.1107/S0108768106002461. Epub 2006 Mar 15.

Packing and polytypism in 1,10-phenanthrolin-1-ium (2-carboxyethyl)(2-carboxylatoethyl)dichlorostannate(IV).

Acta crystallographica. Section B, Structural science

Weenawan Somphon, Kenneth J Haller, A David Rae, Seik Weng Ng

Affiliations

  1. School of Chemistry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand.

PMID: 16552159 DOI: 10.1107/S0108768106002461

Abstract

The 1:1 adduct of [SnCl2(C2H4COOCH3)2] and 1,10-phenanthroline, (C12H8N2), which was set aside for 25 years, when recrystallized from ethanol was found to be the salt [C12H9N2]+.[SnCl2(C2H4COO)(C2H4COOH)]-. The Sn(IV) atom in the anion has pseudo-octahedral coordination with two cis Cl atoms, two C atoms and two O atoms trans to the Cl atoms. The possibility of alternative stacking of layers perpendicular to c* offers an explanation for observed twinning and polytypism. An ordered, untwinned, Z = 2 crystal structure was determined. Pairs of adjacent anions are linked together by strong intermolecular O-H...O- hydrogen bonds, and the cation contains a strong intramolecular N-H...N hydrogen bond between its two N atoms. The protonated ring of the cation exhibits increased Lewis acidity and is linked into a network with the anions using a strong N-H...O and weak C-H...O and C-H...Cl interactions. The remaining rings of the cation form weaker C-H...O and C-H...Cl interactions. The cations stack in columns along a with an interplanar spacing of 3.24 angstroms for separations between cations inversion-related about (1, 1/2, 1/2) and 3.34 angstroms for separations between cations inversion-related about (1/2, 1/2, 1/2).

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