ICSD-anchored CIF for Mn2Sb (Cu2Sb-type, P4/nmm). Z=2. Lattice: a=4.180Å c=7.020Å c/a≈1.68. Validation gates: γ=120°(90° tetragonal), c/a≈1.68, Z=2, stoichiometry Mn2Sb satisfied.