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Y2Ga3Al3(BO3)8 is Calcite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Y3+ sites. In the first Y3+ site, Y3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are two shorter (2.32 Å) and four longer (2.37 Å) Y–O bond lengths. In the second Y3+ site, Y3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are four shorter (2.32 Å) and two longer (2.37 Å) Y–O bond lengths. There are three inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to six O2- atoms to form GaO6 octahedra that share an edgeedge with one GaO6 octahedra and an edgeedge with one AlO6 octahedra. There are a spread of Ga–O bond distances ranging from 1.94–2.03 Å. In the second Ga3+ site, Ga3+ is bonded to six O2- atoms to form GaO6 octahedra that share edges with two AlO6 octahedra. There are a spread of Ga–O bond distances ranging from 1.94–2.02 Å. In the third Ga3+ site, Ga3+ is bonded to six O2- atoms to form GaO6 octahedra that share an edgeedge with one GaO6 octahedra and an edgeedge with one AlO6 octahedra. There are a spread of Ga–O bond distances ranging from 1.94–2.03 Å. There are three inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to six O2- atoms to form AlO6 octahedra that share an edgeedge with one GaO6 octahedra and an edgeedge with one AlO6 octahedra. There are a spread of Al–O bond distances ranging from 1.90–1.98 Å. In the second Al3+ site, Al3+ is bonded to six O2- atoms to form AlO6 octahedra that share an edgeedge with one GaO6 octahedra and an edgeedge with one AlO6 octahedra. There are a spread of Al–O bond distances ranging from 1.90–1.97 Å. In the third Al3+ site, Al3+ is bonded to six O2- atoms to form AlO6 octahedra that share edges with two GaO6 octahedra. There are a spread of Al–O bond distances ranging from 1.89–1.96 Å. There are eight inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.38 Å) and one longer (1.39 Å) B–O bond length. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.38 Å) and one longer (1.40 Å) B–O bond length. In the third B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.38 Å) and one longer (1.39 Å) B–O bond length. In the fourth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.38 Å) and one longer (1.39 Å) B–O bond length. In the fifth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.37–1.39 Å. In the sixth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.37 Å) and one longer (1.38 Å) B–O bond length. In the seventh B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. All B–O bond lengths are 1.39 Å. In the eighth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. All B–O bond lengths are 1.39 Å. There are twenty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two Al3+ and one B3+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ga3+, one Al3+, and one B3+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ga3+, one Al3+, and one B3+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ga3+, one Al3+, and one B3+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Ga3+ and one B3+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ga3+, one Al3+, and one B3+ atom. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to one Y3+, one Al3+, and one B3+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Y3+, one Al3+, and one B3+ atom. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to one Y3+, one Ga3+, and one B3+ atom. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Y3+, one Ga3+, and one B3+ atom. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to one Y3+, one Al3+, and one B3+ atom. In the twelfth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Y3+, one Ga3+, and one B3+ atom. In the thirteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Y3+, one Ga3+, and one B3+ atom. In the fourteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Y3+, one Al3+, and one B3+ atom. In the fifteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Y3+, one Ga3+, and one B3+ atom. In the sixteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Y3+, one Ga3+, and one B3+ atom. In the seventeenth O2- site, O2- is bonded in a 3-coordinate geometry to one Y3+, one Al3+, and one B3+ atom. In the eighteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Y3+, one Al3+, and one B3+ atom. In the nineteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Al3+ and one B3+ atom. In the twentieth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ga3+, one Al3+, and one B3+ atom. In the twenty-first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ga3+, one Al3+, and one B3+ atom. In the twenty-second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ga3+, one Al3+, and one B3+ atom. In the twenty-third O2- site, O2- is bonded in a distorted trigonal planar geometry to two Ga3+ and one B3+ atom. In the twenty-fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ga3+, one Al3+, and one B3+ atom.

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