LiGaSe2 is Enargite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Li(1) is bonded to two equivalent Se(1) and two equivalent Se(2) atoms to form LiSe4 tetrahedra that share corners with four equivalent Li(1)Se4 tetrahedra and corners with eight equivalent Ga(1)Se4 tetrahedra. Ga(1) is bonded to two equivalent Se(1) and two equivalent Se(2) atoms to form GaSe4 tetrahedra that share corners with four equivalent Ga(1)Se4 tetrahedra and corners with eight equivalent Li(1)Se4 tetrahedra. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to two equivalent Li(1) and two equivalent Ga(1) atoms to form corner-sharing SeLi2Ga2 tetrahedra. In the second Se site, Se(2) is bonded to two equivalent Li(1) and two equivalent Ga(1) atoms to form corner-sharing SeLi2Ga2 tetrahedra.
LiGaSe2 is Enargite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Li(1) is bonded to two equivalent Se(1) and two equivalent Se(2) atoms to form LiSe4 tetrahedra that share corners with four equivalent Li(1)Se4 tetrahedra and corners with eight equivalent Ga(1)Se4 tetrahedra. There is one shorter (2.55 Å) and one longer (2.56 Å) Li(1)-Se(1) bond length. There is one shorter (2.53 Å) and one longer (2.54 Å) Li(1)-Se(2) bond length. Ga(1) is bonded to two equivalent Se(1) and two equivalent Se(2) atoms to form GaSe4 tetrahedra that share corners with four equivalent Ga(1)Se4 tetrahedra and corners with eight equivalent Li(1)Se4 tetrahedra. There is one shorter (2.41 Å) and one longer (2.42 Å) Ga(1)-Se(1) bond length. There is one shorter (2.40 Å) and one longer (2.42 Å) Ga(1)-Se(2) bond length. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to two equivalent Li(1) and two equivalent Ga(1) atoms to form corner-sharing SeLi2Ga2 tetrahedra. In the second Se site, Se(2) is bonded to two equivalent Li(1) and two equivalent Ga(1) atoms to form corner-sharing SeLi2Ga2 tetrahedra.