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L-Asparagine-l-tartaric acid (1/1).

ABSTRACT: In the title compound, C(4)H(8)N(2)O(3)·C(4)H(6)O(6), the amino acid mol-ecule exists as a zwitterion and the carb-oxy-lic acid in an un-ionized state. The tartaric acid mol-ecules are linked into layers parallel to the ab plane by O-H?O hydrogen bonds. The amino acid mol-ecules are also linked into layers parallel to the ab plane by N-H?O and C-H?O hydrogen bonds. The alternating tartaric acid and amino acid layers are linked into a three-dimensional framework by N-H?O and O-H?O hydrogen bonds.

SUBMITTER: Natarajan S

PROVIDER: S-EPMC3008049 | biostudies-literature | 2010 Aug

REPOSITORIES: biostudies-literature

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l-Asparagine-l-tartaric acid (1/1).

Natarajan S S Hema V V Sundar J Kalyana JK Suresh J J Lakshman P L Nilantha PL

Acta crystallographica. Section E, Structure reports online 20100811 Pt 9

In the title compound, C(4)H(8)N(2)O(3)·C(4)H(6)O(6), the amino acid mol-ecule exists as a zwitterion and the carb-oxy-lic acid in an un-ionized state. The tartaric acid mol-ecules are linked into layers parallel to the ab plane by O-H⋯O hydrogen bonds. The amino acid mol-ecules are also linked into layers parallel to the ab plane by N-H⋯O and C-H⋯O hydrogen bonds. The alternating tartaric acid and amino acid layers are linked into a three-dimensional framework by N-H⋯O and O-H⋯O hydrogen bonds. ...[more]

PMID: 21588606

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Glycine-d-tartaric acid (1/1).

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Re-evaluation of acetic acid, lactic acid, citric acid, tartaric acid, mono- and diacetyltartaric acid, mixed acetic and tartaric acid esters of mono- and diglycerides of fatty acids (E 472a-f) as food additives.

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