Cu2MgGeS4 crystallizes in the orthorhombic I222 space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent Cu(1) and four equivalent S(1) atoms. Cu(1) is bonded in a 5-coordinate geometry to one Mg(1) and four equivalent S(1) atoms. Ge(1) is bonded in a tetrahedral geometry to four equivalent S(1) atoms. S(1) is bonded to one Mg(1), two equivalent Cu(1), and one Ge(1) atom to form a mixture of distorted corner and edge-sharing SMgCu2Ge tetrahedra.
Cu2MgGeS4 crystallizes in the orthorhombic I222 space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent Cu(1) and four equivalent S(1) atoms. Both Mg(1)-Cu(1) bond lengths are 2.68 Å. All Mg(1)-S(1) bond lengths are 2.43 Å. Cu(1) is bonded in a 5-coordinate geometry to one Mg(1) and four equivalent S(1) atoms. There are two shorter (2.32 Å) and two longer (2.44 Å) Cu(1)-S(1) bond lengths. Ge(1) is bonded in a tetrahedral geometry to four equivalent S(1) atoms. All Ge(1)-S(1) bond lengths are 2.28 Å. S(1) is bonded to one Mg(1), two equivalent Cu(1), and one Ge(1) atom to form a mixture of distorted corner and edge-sharing SMgCu2Ge tetrahedra.