A neutron diffraction study of pentaerythritol

Hvoslef, J.

doi:10.1107/s0365110x58001043

Cited by 72 publications

(59 citation statements)

References 2 publications

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“…The only other instance in which neutral ascorbic acid molecules are found is in the crystal structure of ascorbic acid itself (Hvoslef, 1968). The bond lengths and angles of the molecule in the present structure are comparable to those observed in the structure of ascorbic acid.…”

Section: Ab(a) /H--ab(°)supporting

confidence: 78%

Studies on crystalline complexes involving amino acids. V. The structure of L-serine-L-ascorbic acid

Sudhakar¹,

Bhat²,

Vijayan³

1980

Acta Crystallogr B Struct Crystallogr Cryst Chem

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L-Serine-L-ascorbic acid, C3HTNOa. C6HsO6, a 1:1 complex between the amino acid serine and the vitamin ascorbic acid, crystallizes in the orthorhombic space group P2~2~2~ with four formula units in a cell of dimensions a = 5.335(3), b = 8.769(2), c = 25.782 (5) A. The structure was solved by direct methods and refined by full-matrix least squares to an R of 0.036 for 951 observed reflections. Both molecules are neutral in the structure. The conformation of the serine molecule is different from that observed in the crystal structures of L-serine, DL-serine and L-serine monohydrate. The enediol group in the ascorbic acid molecule is planar, whereas significant departures from planarity are observed in the lactone group. The conformation of this molecule is similar to that observed in arginine ascorbate. The unlike molecules aggregate into separate columns in the crystal structure. The columns are held together by hydrogen bonds. Among these, a pair of hydrogen bonds between the enediol group of ascorbic acid and the carboxylate group of serine provides a possible model for a specific interaction between ascorbic acid and a carboxylate ion.

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Section: Ab(a) /H--ab(°)supporting

confidence: 78%

Studies on crystalline complexes involving amino acids. V. The structure of L-serine-L-ascorbic acid

Sudhakar¹,

Bhat²,

Vijayan³

1980

Acta Crystallogr B Struct Crystallogr Cryst Chem

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“…The lactone ring is almost perpendicular to the square plane about the Pt atom [dihedral angle 73.8 (2)°]. The bond lengths for the asc 2-ligand are comparable to those of H2asc and the ascorbate salts, except for those of C3---O3 and C2m C3; the former is remarkably shortened and the latter is elongated [1.233 (6) and 1.458 (9) for (1), 1.326 (3) and 1.338 (2) for H2asc (Hvoslef, 1968a), and 1.287 (5) and 1.373 (6)A for NaHasc (Hvoslef, 1969)]. The doublebond character of the C2---C3 bond is not observed from the C1---C2--C3---C4 torsion angle of -20.4 (5) °.…”

mentioning

confidence: 60%

(trans-1R,2R-Cyclohexanediamine-N,N')(L-ascorbato-C2,O5)platinum(II)–Water (1/3)

Yuge¹,

Miyamoto²

1996

Acta Crystallogr C

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“…Two other y-lactones of D-aldoses, containing one furanose ring, have been determined (Fig. 1 (Groth & Hammer, 1968); GALA: Dgalactono-y-lactone (Jeffrey, Rosenstein & Vlasse, 1967); MGALA: 2,3,6-trimethylgalactono-y-lactone (Sheldrick, 1973); GULO: y-o-gulonolactone (Berman, Rosenstein & Southwick, 1971); ASCA: L-ascorbic acid (Hvoslef, 1968).…”

Section: D-arabono-y-lactone Has Been Identified As a Metabolic Produmentioning

confidence: 99%

The crystal and molecular structure of D-arabono-γ-lactone

Svinning¹,

Sørum²

1979

Acta Crystallogr Sect B

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A neutron diffraction study of pentaerythritol

Cited by 72 publications

References 2 publications

Studies on crystalline complexes involving amino acids. V. The structure of L-serine-L-ascorbic acid

Studies on crystalline complexes involving amino acids. V. The structure of L-serine-L-ascorbic acid

(trans-1R,2R-Cyclohexanediamine-N,N')(L-ascorbato-C2,O5)platinum(II)–Water (1/3)

The crystal and molecular structure of D-arabono-γ-lactone

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