data_1004043
_publ_section_title
;
Comparison of the crystal structures of alkaline (M = Li, Na, K, Rb,
Cs) and Pseudo-alkaline (M = N O, N H₄) Tetrachloroaluminates, M Al
Cl₄
;
_journal_coden_ASTM              ACBCAR
_journal_name_full               'Acta Crystallographica B (24,1968-38,1982)'
_journal_page_first              1573
_journal_page_last               1580
_journal_paper_doi               10.1107/S0567740879007160
_journal_volume                  35
_journal_year                    1979
_chemical_formula_structural     'Na Al Cl4'
_chemical_formula_sum            'Al Cl4 Na'
_chemical_name_systematic        'Sodium tetrachloroaluminate'
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.886(3)
_cell_length_b                   6.617(2)
_cell_length_c                   10.322(3)
_cell_volume                     675.2
_refine_ls_R_factor_all          0.025
_cod_database_code               1004043
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2-x,-y,1/2+z
1/2+x,1/2-y,-z
-x,1/2+y,1/2-z
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
Al1 Al3+ 4 a 0.51429(6) 0.20707(9) 0.96226(6) 1. 0 d
Cl1 Cl1- 4 a 0.68550(5) 0.10957(9) 0.85152(5) 1. 0 d
Cl2 Cl1- 4 a 0.33503(5) 0.07337(9) 0.87726(5) 1. 0 d
Cl3 Cl1- 4 a 0.55257(6) 0.07458(9) 1.15367(5) 1. 0 d
Cl4 Cl1- 4 a 0.50874(6) 0.55281(8) 0.96786(6) 1. 0 d
Na1 Na1+ 4 a 0.71343(12) 0.31122(23) 0.37466(15) 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Al3+ 3.000
Cl1- -1.000
Na1+ 1.000
