The compound, barium distannide, BaSn2, is trigonal
with space group P3m1 (no. 164), and lattice parameters
of: a = 4.652(2) ? , c = 5.546(4) ? , V = 103.9 ? 3, Z = 1.
BaSn2 crystallizes in the EuGe2 structure type (c/
a = 1.22) with a c/a ratio of 1.19.
