Na2CoS2 crystallizes in the orthorhombic Ibam space group. Na(1) is bonded in a 7-coordinate geometry to two equivalent Co(1) and five equivalent S(1) atoms. Co(1) is bonded to four equivalent Na(1) and four equivalent S(1) atoms to form distorted face-sharing CoNa4S4 tetrahedra. S(1) is bonded in a 7-coordinate geometry to five equivalent Na(1) and two equivalent Co(1) atoms.
Na2CoS2 crystallizes in the orthorhombic Ibam space group. Na(1) is bonded in a 7-coordinate geometry to two equivalent Co(1) and five equivalent S(1) atoms. Both Na(1)-Co(1) bond lengths are 3.07 Å. There are a spread of Na(1)-S(1) bond distances ranging from 2.84-3.02 Å. Co(1) is bonded to four equivalent Na(1) and four equivalent S(1) atoms to form distorted face-sharing CoNa4S4 tetrahedra. All Co(1)-S(1) bond lengths are 2.29 Å. S(1) is bonded in a 7-coordinate geometry to five equivalent Na(1) and two equivalent Co(1) atoms.