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Complexes of Nitrilotriacetic Acid with Amines. Molecular Structures of 2-Ammonioethanol Nitrilotriacetate and Bis{2-Ammonio-2-(Hydroxymethyl)propane-1,3-Diol} Nitrilotriacetate.
- Source :
- Crystallography Reports; May2021, Vol. 66 Issue 3, p441-447, 7p
- Publication Year :
- 2021
-
Abstract
- Reactions of nitrilotriacetic acid with 2-aminoethanol, 2-amino-2-(hydroxymethyl)propane-1,3-diol, and 2,2'-(ethylenedioxy)bis(ethylamine) afford the following salts in high yields: 2-ammonioethanol nitrilotriacetate [HN<superscript>+</superscript>(CH<subscript>2</subscript>COO<superscript>–</superscript>)<subscript>2</subscript>(CH<subscript>2</subscript>COOH) ⋅ H<subscript>3</subscript>N<superscript>+</superscript>CH<subscript>2</subscript>CH<subscript>2</subscript>OH]<subscript>n</subscript>, bis{2-ammonio-2-(hydroxymethyl)propane-1,3-diol} nitrilotriacetate HN<superscript>+</superscript>(CH<subscript>2</subscript>COO<superscript>–</superscript>)<subscript>3</subscript> ⋅ 2H<subscript>3</subscript>N<superscript>+</superscript>C(CH<subscript>2</subscript> OH)<subscript>3</subscript>, and 2,2'-(ethylenedioxy)bis(ethylammonium) nitrilotriacetate HN<superscript>+</superscript>(CH<subscript>2</subscript>COO<superscript>–</superscript>)<subscript>3</subscript> ⋅ H<subscript>3</subscript>N<superscript>+</superscript>CH<subscript>2</subscript>CH<subscript>2</subscript>OCH<subscript>2</subscript>CH<subscript>2</subscript>OCH<subscript>2</subscript>CH<subscript>2</subscript>N<superscript>+</superscript>H<subscript>3</subscript>. The molecular structures of 2-ammonioethanol nitrilotriacetate and bis{2-ammonio-2-(hydroxymethyl)propane-1,3-diol} nitrilotriacetate were determined. Nitrilotriacetic acid molecules in 2-ammonioethanol nitrilotriacetate are linked by O⋅⋅⋅H⋅⋅⋅O hydrogen bonds involving acid groups of adjacent molecules to form a polymer chain. On the contrary, nitrilotriacetic acid molecules in bis{2-ammonio-2-(hydroxymethyl)propane-1,3-diol} nitrilotriacetate do not form polymer chains. In the crystals of both compounds, adjacent molecules are linked by numerous O⋅⋅⋅H interactions to form infinite 3D frameworks. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10637745
- Volume :
- 66
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Crystallography Reports
- Publication Type :
- Academic Journal
- Accession number :
- 150496014
- Full Text :
- https://doi.org/10.1134/S1063774521030214