Koiso T, Yamamoto K, Hata Y, Takahashi Y, Kita E, Ohshima K, Okamura FP. Determination of the chiral structure of [Formula: see text] using anomalous x-ray scattering near the Cs K absorption edge.
JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 1996;
8:7059-7065. [PMID:
22146693 DOI:
10.1088/0953-8984/8/38/010]
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Abstract
A structural study of [Formula: see text], grown from aqueous solution, was performed using anomalous x-ray scattering near the Cs K absorption edge to determine an absolute configuration of constituent atoms. The sense of the helical structure of the [Formula: see text] chain was found to be predominantly right-handed through a comparison of observed Bragg Bijvoet ratios with calculated ones. Assuming that [Formula: see text] consists of the two domains (i.e. right- and left-handed helices), we estimate that the volume fraction for the right-handed helix is [Formula: see text].
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