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GaP is Zincblende, Sphalerite structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Ga3+ is bonded to four equivalent P3- atoms to form corner-sharing GaP4 tetrahedra. All Ga–P bond lengths are 2.38 Å. P3- is bonded to four equivalent Ga3+ atoms to form corner-sharing PGa4 tetrahedra.
GaP is High Pressure Cadmuum Telluride structured and crystallizes in the orthorhombic Pmm2 space group. The structure is three-dimensional. Ga3+ is bonded in a linear geometry to two equivalent P3- atoms. Both Ga–P bond lengths are 2.63 Å. P3- is bonded to two equivalent Ga3+ and four equivalent P3- atoms to form a mixture of edge and corner-sharing PGa2P4 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are two shorter (2.56 Å) and two longer (2.57 Å) P–P bond lengths.
GaP is SC16 CuCl, stable at 5GPa structured and crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Ga3+ is bonded to four equivalent P3- atoms to form corner-sharing GaP4 tetrahedra. There are one shorter (2.34 Å) and three longer (2.43 Å) Ga–P bond lengths. P3- is bonded to four equivalent Ga3+ atoms to form corner-sharing PGa4 trigonal pyramids.
GaP crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. Ga3+ is bonded in a distorted see-saw-like geometry to four equivalent P3- atoms. There are two shorter (2.52 Å) and two longer (2.54 Å) Ga–P bond lengths. P3- is bonded in a distorted see-saw-like geometry to four equivalent Ga3+ atoms.
GaP crystallizes in the trigonal R-3m space group. The structure is two-dimensional and consists of three GaP sheets oriented in the (0, 0, 1) direction. Ga3+ is bonded in a trigonal non-coplanar geometry to three equivalent P3- atoms. All Ga–P bond lengths are 2.40 Å. P3- is bonded to three equivalent Ga3+ and one P3- atom to form corner-sharing PGa3P tetrahedra. The P–P bond length is 2.21 Å.