GaSe

InSe

$t_1=\left(-a,0,0\right)$

$t_2=\left(-a/2,a\sqrt{3}/2,0\right)$

$t_3=\left(0,0,c\right)$

$t_1=\left(-a,0,0\right)$

$t_2=\left(-a/2,a\sqrt{3}/2,0\right)$

$t_3=\left(0,0,c\right)$

$a=3.755\AA ,c=15.94\AA$

$a=4.05\AA ,c=16.64\AA$

${\text{Se}}_{\text{I}}:\left(1/3,2/3,0.1003\right)$

${\text{Se}}_{\text{I}}:\left(1/3,2/3,0.0907\right)$

${\text{Ga}}_{\text{I}}:\left(0,0,0.1701\right)$

${\text{In}}_{\text{I}}:\left(0,0,0.1677\right)$

${\text{Ga}}_{\text{II}}:\left(0,0,0.3299\right)$

${\text{In}}_{\text{II}}:\left(0,0,0.3233\right)$

${\text{Se}}_{\text{II}}:\left(1/3,2/3,0.3997\right)$

${\text{Se}}_{\text{II}}:\left(1/3,2/3,0.4093\right)$

${\text{Se}}_{\text{III}}:\left(2/3,1/3,0.6003\right)$

${\text{Se}}_{\text{III}}:\left(2/3,1/3,0.5907\right)$

${\text{Ga}}_{\text{III}}:\left(1/3,2/3,0.6701\right)$

${\text{In}}_{\text{III}}:\left(1/3,2/3,0.6677\right)$

${\text{Ga}}_{\text{IV}}:\left(1/3,2/3,0.8299\right)$

${\text{In}}_{\text{IV}}:\left(1/3,2/3,0.8323\right)$

${\text{Se}}_{\text{IV}}:\left(2/3,1/3,0.8997\right)$

${\text{Se}}_{\text{IV}}:\left(2/3,1/3,0.9093\right)$

MoS₂

WS₂

$t_1=\left(-a,0,0\right)$

$t_2=\left(-a/2,a\sqrt{3}/2,0\right)$

$t_3=\left(0,0,c\right)$

$t_1=\left(-a,0,0\right)$

$t_2=\left(-a/2,a\sqrt{3}/2,0\right)$

$t_3=\left(0,0,c\right)$

$a=3.122\AA ,c=12.32\AA$

$a=3.153\AA ,c=12.323\AA$

${\text{S}}_{\text{I}}:\left(1/3,2/3,0.1250\right)$

${\text{S}}_{\text{I}}:\left(1/3,2/3,0.0907\right)$

${\text{Mo}}_{\text{I}}:\left(0,0,0.2500\right)$

${\text{W}}_{\text{I}}:\left(0,0,0.1677\right)$

${\text{S}}_{\text{II}}:\left(1/3,2/3,0.3750\right)$

${\text{S}}_{\text{II}}:\left(1/3,2/3,0.4093\right)$

${\text{S}}_{\text{III}}:\left(2/3,1/3,0.6250\right)$

${\text{S}}_{\text{III}}:\left(2/3,1/3,0.5097\right)$

${\text{Mo}}_{\text{III}}:\left(1/3,2/3,0.7500\right)$

${\text{W}}_{\text{III}}:\left(1/3,2/3,0.6677\right)$

${\text{S}}_{\text{IV}}:\left(2/3,1/3,0.8750\right)$

${\text{S}}_{\text{IV}}:\left(2/3,1/3,0.9093\right)$