Determination of the chiral structure of [Formula: see text] using anomalous x-ray scattering near the Cs K absorption edge |
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Authors: | Koiso T Yamamoto K Hata Y Takahashi Y Kita E Ohshima K Okamura F P |
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Affiliation: | Institute of Applied Physics, University of Tsukuba, Tsukuba 305, Japan. |
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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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