Mo2RuSe4 crystallizes in the triclinic P-1 space group. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 5-coordinate geometry to two equivalent Ru(1), one Se(1), one Se(2), one Se(4), and two equivalent Se(3) atoms. In the second Mo site, Mo(2) is bonded in a 5-coordinate geometry to two equivalent Ru(1), one Se(1), one Se(2), one Se(3), and two equivalent Se(4) atoms. Ru(1) is bonded to two equivalent Mo(1), two equivalent Mo(2), one Se(1), one Se(3), one Se(4), and two equivalent Se(2) atoms to form a mixture of distorted edge and face-sharing RuMo4Se5 square pyramids. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(2), and one Ru(1) atom. In the second Se site, Se(2) is bonded in a rectangular see-saw-like geometry to one Mo(1), one Mo(2), and two equivalent Ru(1) atoms. In the third Se site, Se(3) is bonded in a distorted rectangular see-saw-like geometry to one Mo(2), two equivalent Mo(1), and one Ru(1) atom. In the fourth Se site, Se(4) is bonded in a distorted rectangular see-saw-like geometry to one Mo(1), two equivalent Mo(2), and one Ru(1) atom.
Mo2RuSe4 crystallizes in the triclinic P-1 space group. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 5-coordinate geometry to two equivalent Ru(1), one Se(1), one Se(2), one Se(4), and two equivalent Se(3) atoms. There is one shorter (2.67 Å) and one longer (2.70 Å) Mo(1)-Ru(1) bond length. The Mo(1)-Se(1) bond length is 2.52 Å. The Mo(1)-Se(2) bond length is 2.55 Å. The Mo(1)-Se(4) bond length is 2.57 Å. There is one shorter (2.61 Å) and one longer (2.67 Å) Mo(1)-Se(3) bond length. In the second Mo site, Mo(2) is bonded in a 5-coordinate geometry to two equivalent Ru(1), one Se(1), one Se(2), one Se(3), and two equivalent Se(4) atoms. There is one shorter (2.67 Å) and one longer (2.71 Å) Mo(2)-Ru(1) bond length. The Mo(2)-Se(1) bond length is 2.53 Å. The Mo(2)-Se(2) bond length is 2.55 Å. The Mo(2)-Se(3) bond length is 2.54 Å. There is one shorter (2.62 Å) and one longer (2.66 Å) Mo(2)-Se(4) bond length. Ru(1) is bonded to two equivalent Mo(1), two equivalent Mo(2), one Se(1), one Se(3), one Se(4), and two equivalent Se(2) atoms to form a mixture of distorted edge and face-sharing RuMo4Se5 square pyramids. The Ru(1)-Se(1) bond length is 2.48 Å. The Ru(1)-Se(3) bond length is 2.49 Å. The Ru(1)-Se(4) bond length is 2.49 Å. There is one shorter (2.55 Å) and one longer (2.62 Å) Ru(1)-Se(2) bond length. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(2), and one Ru(1) atom. In the second Se site, Se(2) is bonded in a rectangular see-saw-like geometry to one Mo(1), one Mo(2), and two equivalent Ru(1) atoms. In the third Se site, Se(3) is bonded in a distorted rectangular see-saw-like geometry to one Mo(2), two equivalent Mo(1), and one Ru(1) atom. In the fourth Se site, Se(4) is bonded in a distorted rectangular see-saw-like geometry to one Mo(1), two equivalent Mo(2), and one Ru(1) atom.