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