TaNSe is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Ta(1) is bonded in a 4-coordinate geometry to four equivalent N(1) and five equivalent Se(1) atoms. N(1) is bonded to four equivalent Ta(1) atoms to form a mixture of corner and edge-sharing NTa4 tetrahedra. Se(1) is bonded in a 5-coordinate geometry to five equivalent Ta(1) atoms.
TaNSe is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Ta(1) is bonded in a 4-coordinate geometry to four equivalent N(1) and five equivalent Se(1) atoms. All Ta(1)-N(1) bond lengths are 2.13 Å. There is one shorter (2.85 Å) and four longer (2.90 Å) Ta(1)-Se(1) bond lengths. N(1) is bonded to four equivalent Ta(1) atoms to form a mixture of corner and edge-sharing NTa4 tetrahedra. Se(1) is bonded in a 5-coordinate geometry to five equivalent Ta(1) atoms.