InGaP2 is Enargite-like structured and crystallizes in the trigonal R3m space group. In(1) is bonded to one P(2) and three equivalent P(1) atoms to form InP4 tetrahedra that share corners with six equivalent In(1)P4 tetrahedra and corners with six equivalent Ga(1)P4 tetrahedra. Ga(1) is bonded to one P(1) and three equivalent P(2) atoms to form GaP4 tetrahedra that share corners with six equivalent In(1)P4 tetrahedra and corners with six equivalent Ga(1)P4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to three equivalent In(1) and one Ga(1) atom to form PIn3Ga tetrahedra that share corners with six equivalent P(1)In3Ga tetrahedra and corners with six equivalent P(2)InGa3 tetrahedra. In the second P site, P(2) is bonded to one In(1) and three equivalent Ga(1) atoms to form PInGa3 tetrahedra that share corners with six equivalent P(1)In3Ga tetrahedra and corners with six equivalent P(2)InGa3 tetrahedra.
InGaP2 is Enargite-like structured and crystallizes in the trigonal R3m space group. In(1) is bonded to one P(2) and three equivalent P(1) atoms to form InP4 tetrahedra that share corners with six equivalent In(1)P4 tetrahedra and corners with six equivalent Ga(1)P4 tetrahedra. The In(1)-P(2) bond length is 2.58 Å. All In(1)-P(1) bond lengths are 2.52 Å. Ga(1) is bonded to one P(1) and three equivalent P(2) atoms to form GaP4 tetrahedra that share corners with six equivalent In(1)P4 tetrahedra and corners with six equivalent Ga(1)P4 tetrahedra. The Ga(1)-P(1) bond length is 2.38 Å. All Ga(1)-P(2) bond lengths are 2.45 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to three equivalent In(1) and one Ga(1) atom to form PIn3Ga tetrahedra that share corners with six equivalent P(1)In3Ga tetrahedra and corners with six equivalent P(2)InGa3 tetrahedra. In the second P site, P(2) is bonded to one In(1) and three equivalent Ga(1) atoms to form PInGa3 tetrahedra that share corners with six equivalent P(1)In3Ga tetrahedra and corners with six equivalent P(2)InGa3 tetrahedra.