SrZn(11): a new binary compound with the BaCd(11) structure.
Single crystals of strontium undecazinc, SrZn(11), were obtained when decomposing SrZn(2) under conditions of high pressure and high temperature. The new binary Sr-Zn compound crystallizes in the space group I4(1)/amd (BaCd(11) structure type) with one Sr position (\overline{4}m2) and three Zn sites (\overline{4}m2, .2/m., 1). The structure is described in terms of all-face-capped Zn(8) tetrahedra as the central building unit, defined by the Zn atoms on .2/m. and 1. The building units are condensed into chains by the central tetrahedra sharing edges, and the chains are interconnected by shared capping atoms. The resulting three-dimensional framework of Zn atoms yields channels that are occupied by Sr and Zn atoms on the high-symmetry \overline{4}m2 positions.
Kal
Subhadeep
S
Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India.
Stoyanov
Emil
E
Groy
Thomas L
TL
Häussermann
Ulrich
U