The calculated Lattice constant (Å), space group, cohesive energy Ecoh (eV per atom) and bond lengths (Å) of M–S and M–C bonds of M2CSx (M = Sc, Ti, Y, Zr and Hf, x = 1, 2).
| Material | Lattice constant | Bond length | Space group | E coh | Material | Lattice constant | Bond length | Space group | E coh | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| a | M–S | M–C | a | M–S | M–C | ||||||
| Sc2CS2 | 3.76 | 2.484/2.459 | 2.293/2.650 | P3m1 | −6.03 | Sc2CS | 6.82 | 2.474 | 2.253 | P21/m | −6.30 |
| Ti2CS2 | 3.16 | 2.395 | 2.189 | P3m1 | −6.70 | Ti2CS | 6.17 | 2.358 | 2.093 | P21/m | −7.00 |
| Y2CS2 | 4.17 | 2.628/2.605 | 2.485/2.877 | P3m1 | −6.52 | Y2CS | 7.37 | 2.656 | 2.429 | P21/m | −6.62 |
| Zr2CS2 | 3.44 | 2.531 | 2.394 | P3m1 | −8.13 | Zr2CS | 6.64 | 2.508 | 2.278 | P21/m | −8.15 |
| Hf2CS2 | 3.40 | 2.508 | 2.366 | P3m1 | −7.92 | Hf2CS | 6.54 | 2.477 | 2.260 | P21/m | −8.14 |