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Neither electronic configurations of Sn and Se atoms nor their Wyckoff positions in the P21ca structure are provided.

¶ÔÕâ¸öÒâ¼ûÓÐ2¸öµØ·½¸ã²»Çå:
1. electronic configurations of Sn and Se:  ÕâÊÇÈÃÎÒÌṩSn¡¢SeµÄµç×ӽṹ£¬Êǽ«ÔªËØÖÜÆڵĽṹд³öÀ´£ºSn: 4d105s25p2; Se: 3d104s24p4
»¹Êǽ«POTCARÀïÀïÃ棺 VRHFIN =Se: s2p4£¬   VRHFIN =Sn: s2p2 д³öÀ´£¿£¿

2. Wyckoff positions in the P21ca ÊÇÖ±½Ó½«CIFÎļþÀï×ø±êд³öÀ´£¬»¹ÊÇÔõôŪ£¿µÚÒ»´ÎÅöµ½ÕâÖÖÇé¿ö
ÕâÊÇCIFÎļþ£º
data_deta
_audit_creation_date 2017-08-21
_audit_creation_method 'Materials Studio'
_symmetry_space_group_name_H-M 'PCA21'
_symmetry_Int_Tables_number 29
_symmetry_cell_setting orthorhombic
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,z+1/2
x+1/2,-y,z
-x+1/2,y,z+1/2
_cell_length_a 6.1400
_cell_length_b 21.0000
_cell_length_c 6.2300
_cell_angle_alpha 90.0000
_cell_angle_beta 90.0000
_cell_angle_gamma 90.0000
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
Sn1 Sn 0.97027 0.56204 0.76183 0.01267 Uiso 1.00
Se1 Se 0.48587 0.43773 0.21076 0.01267 Uiso 1.00
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_ccdc_geom_bond_type
Sn1 Se1 2.819 2_665 S
Sn1 Se1 2.798 3_566 S
Sn1 Se1 2.644 4_655 S
Se1 Sn1 2.819 2_664 S
Se1 Sn1 2.798 3_464 S
Se1 Sn1 2.644 4_654 S



д³öÕâ¸öÂð£¿
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,z+1/2
x+1/2,-y,z
-x+1/2,y,z+1/2


»¹ÊÇÓÃVESTA´ò¿ªCIFÎļþ£¬µÃµ½Î»ÖÃ
Structure parameters

                       x          y          z          Occ.     U    Site    Sym.
   1 Sn  Sn1         0.97027    0.56204    0.76183    1.000    0.013    4a       1
   2 Se  Se1         0.48587    0.43773    0.21076    1.000    0.013    4a       1


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