Cover illustration: The molecular structure of one of the independent molecules of telaprevir, with displacement ellipsoids drawn at the 40% probability level. Minor disorder components have been omitted for clarity. See Gelbrich, Kahlenberg, Langes & Griesser [Acta Cryst. (2013), C69, 179-182].
Cu2ScZr(PO4)3 adopts a NASICON-type structure. Changes in the site-occupancy factors of the nonframework Cu+ cations suggest increased mobility around a circular orbit close to the M1 site at room temperature, but no movement into or out of the M2 site.
Racemically twinned crystals of the title compound were studied. The CrVIO4 tetrahedron is disordered on a threefold axis, while two CrVO4 tetrahedra are ordered. Ca atoms are coordinated by six (on a threefold axis), seven and eight O atoms.
Single crystals of the new layered title compound, barium di-μ-hydroxido-di-μ-vanadato-tricobaltate(II), were prepared under hydrothermal conditions. The octahedral Co3O6(OH)2 Kagomé layers alternate with barium vanadate heteropolyhedral layers along the c axis.