Dy117Co57Sn112, a new structure type of ternary intermetallic stannides with a giant unit cell

The crystal structure of a new ternary stannide Dy117Co57Sn112, space group Fm-3m (N225), a=29.831(4) Angstrom, Z=4, V=26546.26(1) Angstrom (3), mu =40.34 mm(-1) was refined from single-crystal X-ray diffraction data to R=0.0689, Rw2=0.1119 from 1000 reflections hkl with 1>4 sigma (I) and 89 variable parameters. The structure is related to the Tb117Fe52Ge112 structure type and contains 1144 atoms per unit cell. (C) 2001 Elsevier Science B.V. All rights reserved.