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CoGa is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Co is bonded in a body-centered cubic geometry to eight equivalent Ga atoms. All Co–Ga bond lengths are 2.50 Å. Ga is bonded in a body-centered cubic geometry to eight equivalent Co atoms.
Co(MoO4)6GaO12(O2)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two oxygen molecules, one Co(MoO4)6 cluster, and one GaO12 cluster. In the Co(MoO4)6 cluster, there are three inequivalent Mo sites. In the first Mo site, Mo is bonded in a 4-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.73–2.68 Å. In the second Mo site, Mo is bonded in a 4-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.72–2.50 Å. In the third Mo site, Mo is bonded in a 4-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.72–2.54 Å. Co is bonded in an octahedral geometry to six O atoms. There are a spread of Co–O bond distances ranging from 1.77–1.91 Å. There are twelve inequivalent O sites. In the first O site, O is bonded in a distorted trigonal non-coplanar geometry to two Mo and one Co atom. In the second O site, O is bonded in a bent 120 degrees geometry to two Mo atoms. In the third O site, O is bonded in a single-bond geometry to one Mo atom. In the fourth O site, O is bonded in a single-bond geometry to one Mo atom. In the fifth O site, O is bonded in a distorted single-bond geometry to two Mo and one Co atom. In the sixth O site, O is bonded in a bent 120 degrees geometry to two Mo atoms. In the seventh O site, O is bonded in a single-bond geometry to one Mo atom. In the eighth O site, O is bonded in a single-bond geometry to one Mo atom. In the ninth O site, O is bonded in a distorted single-bond geometry to two Mo and one Co atom. In the tenth O site, O is bonded in a bent 120 degrees geometry to two Mo atoms. In the eleventh O site, O is bonded in a single-bond geometry to one Mo atom. In the twelfth O site, O is bonded in a single-bond geometry to one Mo atom. In the GaO12 cluster, Ga is bonded in a distorted linear geometry to six O atoms. There are two shorter (1.73 Å) and four longer (2.55 Å) Ga–O bond lengths. There are six inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Ga and one O atom. The O–O bond length is 1.31 Å. In the second O site, O is bonded in a bent 120 degrees geometry to one Ga and one O atom. The O–O bond length is 1.23 Å. In the third O site, O is bonded in a single-bond geometry to one Ga atom. In the fourth O site, O is bonded in a single-bond geometry to one O atom. The O–O bond length is 1.27 Å. In the fifth O site, O is bonded in a single-bond geometry to one O atom. In the sixth O site, O is bonded in a bent 120 degrees geometry to two O atoms.
Dy(CoGa)6 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Dy is bonded in a 8-coordinate geometry to twelve Co and eight Ga atoms. There are four shorter (3.19 Å) and eight longer (3.23 Å) Dy–Co bond lengths. There are a spread of Dy–Ga bond distances ranging from 2.79–2.99 Å. There are two inequivalent Co sites. In the first Co site, Co is bonded to two equivalent Dy, four equivalent Co, and six Ga atoms to form a mixture of distorted face, edge, and corner-sharing CoDy2Ga6Co4 cuboctahedra. All Co–Co bond lengths are 2.50 Å. There are a spread of Co–Ga bond distances ranging from 2.52–2.66 Å. In the second Co site, Co is bonded to two equivalent Dy, four Co, and six Ga atoms to form a mixture of distorted face, edge, and corner-sharing CoDy2Ga6Co4 cuboctahedra. Both Co–Co bond lengths are 2.52 Å. There are a spread of Co–Ga bond distances ranging from 2.46–2.60 Å. There are three inequivalent Ga sites. In the first Ga site, Ga is bonded in a 10-coordinate geometry to one Dy, six Co, and three Ga atoms. There are one shorter (2.67 Å) and two longer (2.87 Å) Ga–Ga bond lengths. In the second Ga site, Ga is bonded in a 8-coordinate geometry to one Dy, six Co, and one Ga atom. The Ga–Ga bond length is 2.61 Å. In the third Ga site, Ga is bonded in a 12-coordinate geometry to two equivalent Dy, six Co, and two equivalent Ga atoms.