title: Crystal structure of (-)-(2R,3S,4R,5R)-5-(1,3-di-thian-2-yl)-3-methyl-1-(triiso-propyl-sil-yloxy)hexane-2,4-diol.
abstract: The title compound, C20H42O3S2Si, crystallized with two independent mol-ecules (A and B) in the asymmetric unit. They consist of syn,anti,anti-stereo-tetrads with a 1,3-di-thiane motif and a primary alcohol protected as the triisopropyl silyl ether. The 1,3-di-thiane ring adopts a chair conformation, while the rest of each mol-ecule displays a common zigzag conformation. There is an intra-molecular O-H⋯O hydrogen bond in each mol-ecule. In the crystal, the A and B mol-ecules are linked via O-H⋯O hydrogen bonds, forming -A-B-A--B-- chains along [010]. The absolute structure was determined by resonant scattering (anomalous scattering) [Flack parameter = 0.035 (8)].
authors.affiliation: University of Puerto Rico, Rio Piedras Campus, Department of Chemistry, PO Box 23346, San Juan, 000936-8377, Puerto Rico.
authors.forename: Alejandra
authors.initials: A
authors.lastname: Cruz-Montanez
authors.affiliation: University of Puerto Rico, Rio Piedras Campus, Department of Chemistry, PO Box 23346, San Juan, 000936-8377, Puerto Rico.
authors.forename: Dalice M
authors.initials: DM
authors.lastname: Piñero Cruz
authors.affiliation: University of Puerto Rico, Rio Piedras Campus, Department of Chemistry, PO Box 23346, San Juan, 000936-8377, Puerto Rico.
authors.forename: Jose A
authors.initials: JA
authors.lastname: Prieto
keywords: 1,3-di­thiane; crystal structure; polypropionate; stereo­tetra­ds