Academic Journal
Interactions of Calcium Ions with Carbohydrates. The Crystal Structure of Calcium d-Glycero-d-gulo-heptonate Tetrahydrate
| العنوان: | Interactions of Calcium Ions with Carbohydrates. The Crystal Structure of Calcium d-Glycero-d-gulo-heptonate Tetrahydrate |
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| المؤلفون: | Taga, Tooru, Kaji, Taneno, Osaki, Kenji |
| المصدر: | Bulletin of the Chemical Society of Japan ; volume 58, issue 1, page 30-35 ; ISSN 0009-2673 1348-0634 |
| بيانات النشر: | Oxford University Press (OUP) |
| سنة النشر: | 1985 |
| مصطلحات موضوعية: | General Chemistry |
| الوصف: | The crystal structure of the calcium salt of d-glycero-d-gulo-heptonic acid has been determined by the X-ray method. The crystal is monoclinic of space group P21 with unit-cell dimensions of a=10.064(1), b=10.540(2), c=11.340(2) Å, and β=108.92(1)°. The intensity data for 1754 unique reflections were measured with an automatic diffractometer. A trial structure, obtained by the direct method, was refined by the full-matrix least-squares method to R=0.030. The two independent heptonate anions have different conformations, and they chelate a calcium ion in different ways. The calcium ion is surrounded by eight oxygen atoms in a deformed dodecahedral form, the Ca···O distances ranging from 2.40 Å to 2.48 Å. The distortion of the moleular strcuture of the heptonate anions due to the calcium chelation was discussed in relation to the calcium-binding sites on a linear carbohydrate chain. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1246/bcsj.58.30 |
| الاتاحة: | http://dx.doi.org/10.1246/bcsj.58.30 https://academic.oup.com/bcsj/article-pdf/58/1/30/55712198/bcsj.58.30.pdf |
| Rights: | https://academic.oup.com/pages/standard-publication-reuse-rights |
| رقم الانضمام: | edsbas.E4951BC6 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1246/bcsj.58.30 |
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