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. 2023 Jul 19;13(31):21690–21702. doi: 10.1039/d3ra03340f

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