LMucko/crystallography-open-database huggingface dataset:
Ueber Oxidpnictide: Zur Kenntnis von Ba2 Mn2 Sb2 O und Ba2 Mn2 Bi2 O
Brechtel, E.; Cordier, G.; Schaefer, H.; Zeitschrift fuer Naturforschung, Teil B. Anorganische Chemie, Organische Chemie (33,1978-41,1986) 36 (1981) 27–30; doi:

data_7221468
_publ_section_title
;
 Ueber Oxidpnictide: Zur Kenntnis von Ba2 Mn2 Sb2 O und Ba2 Mn2 Bi2 O
;
_journal_name_full
;
Zeitschrift fuer Naturforschung, Teil B. Anorganische Chemie, Organische 
Chemie (33,1978-41,1986)
;
_journal_page_first              27
_journal_page_last               30
_journal_volume                  36
_journal_year                    1981
_chemical_formula_sum            'Ba2 Mn2 O Sb2'
_chemical_name_systematic        'Ba2 Mn2 Sb2 O'
_space_group_IT_number           194
_symmetry_space_group_name_Hall  '-P 6c 2c'
_symmetry_space_group_name_H-M   'P 63/m m c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            2
_cell_length_a                   4.71
_cell_length_b                   4.71
_cell_length_c                   20.04
_cell_volume                     385.008
_citation_journal_id_ASTM        ZNBAD2
_cod_data_source_file            Brechtel_ZNBAD2_1981_11.cif
_cod_data_source_block           Ba2Mn2O1Sb2
_cod_original_cell_volume        385.0084
_cod_original_formula_sum        'Ba2 Mn2 O1 Sb2'
_cod_database_code               7221468
Ueber Oxidprictide: Zur Kenntnis von Ba2 Mn2 Sb2 O und Ba2 Mn2 Bi2 O
Brechtel, E.; Cordier, G.; Schaefer, H.; Zeitschrift fuer Naturforschung, Teil B. Anorganische Chemie, Organische Chemie (33,1978-41,1986) 36 (1981) 27–30; doi:

data_7221469
_publ_section_title
;
 Ueber Oxidprictide: Zur Kenntnis von Ba2 Mn2 Sb2 O und Ba2 Mn2 Bi2 O
;
_journal_name_full
;
Zeitschrift fuer Naturforschung, Teil B. Anorganische Chemie, Organische 
Chemie (33,1978-41,1986)
;
_journal_page_first              27
_journal_page_last               30
_journal_volume                  36
_journal_year                    1981
_chemical_formula_sum            'Ba2 Bi2 Mn2 O'
_chemical_name_systematic        'Ba2 Mn2 Bi2 O'
_space_group_IT_number           194
_symmetry_space_group_name_Hall  '-P 6c 2c'
_symmetry_space_group_name_H-M   'P 63/m m c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            2
_cell_length_a                   4.803
_cell_length_b                   4.803
_cell_length_c                   20.097
_cell_volume                     401.501
_citation_journal_id_ASTM        ZNBAD2
_cod_data_source_file            Brechtel_ZNBAD2_1981_12.cif
_cod_data_source_block           Ba2Bi2Mn2O1
_cod_original_cell_volume        401.5014
_cod_original_formula_sum        'Ba2 Bi2 Mn2 O1'
_cod_database_code               7221469
The crystal structure of U7 Te12 and U2 O2 Te
Breeze, E.W.; Brett, N.H.; Journal of Nuclear Materials 40 (1971) 113–115; doi:

data_1528375
_publ_section_title
;
 The crystal structure of U7 Te12 and U2 O2 Te
;
_journal_name_full               'Journal of Nuclear Materials'
_journal_page_first              113
_journal_page_last               115
_journal_volume                  40
_journal_year                    1971
_chemical_formula_sum            'Te12 U7'
_chemical_name_systematic        'U7 Te12'
_space_group_IT_number           176
_symmetry_space_group_name_Hall  '-P 6c'
_symmetry_space_group_name_H-M   'P 63/m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            1
_cell_length_a                   12.309
_cell_length_b                   12.309
_cell_length_c                   4.242
_cell_volume                     556.605
_citation_journal_id_ASTM        JNUMAM
_cod_data_source_file            Breeze_JNUMAM_1971_107.cif
_cod_data_source_block           Te12U7
_cod_original_cell_volume        556.6047
_cod_database_code               1528375
Crystal structure and thermal expansion of the low- and high-temperature forms of Ba M(IV) (P O4)2 compounds (M = Ti, Zr, Hf and Sn)
Bregiroux, D.; Caciuffo, R.; Popa, K.; Raison, P.E.; Jardin, R.; Brunelli, M.; Wallez, G.; Quarton, M.; Ferrero, C.; Journal of Solid State Chemistry 182 (2009) 1115–1120; doi:

data_1528376
_publ_section_title
;
 Crystal structure and thermal expansion of the low- and high-temperature
 forms of Ba M(IV) (P O4)2 compounds (M = Ti, Zr, Hf and Sn)
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              1115
_journal_page_last               1120
_journal_volume                  182
_journal_year                    2009
_chemical_formula_sum            'Ba O8 P2 Zr'
_chemical_name_systematic        'Ba Zr (P O4)2'
_space_group_IT_number           164
_symmetry_space_group_name_Hall  '-P 3 2"'
_symmetry_space_group_name_H-M   'P -3 m 1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            1
_cell_length_a                   5.2145
_cell_length_b                   5.2145
_cell_length_c                   7.8165
_cell_volume                     184.064
_citation_journal_id_ASTM        JSSCBI
_cod_data_source_file            Bregiroux_JSSCBI_2009_1726.cif
_cod_data_source_block           Ba1O8P2Zr1
_cod_original_cell_volume        184.0638
_cod_original_formula_sum        'Ba1 O8 P2 Zr1'
_cod_database_code               1528376
Re-evaluation of the x-ray crystal structure of [Ta4 F20] and the synthesis and characterization of a series of mixed-metal pentafluorides of niobium and tantalum
Brewer, S.A.; Hope, E.G.; Fawcett, J.; Brisdon, A.K.; Holloway, J.H.; Holliman, P.J.; Russell, D.R.; Zeitschrift fuer Anorganische und Allgemeine Chemie 632 (2006) 325–329; doi:

data_1528377
_publ_section_title
;
 Re-evaluation of the x-ray crystal structure of [Ta4 F20] and the
 synthesis and characterization of a series of mixed-metal pentafluorides
 of niobium and tantalum
;
_journal_name_full
'Zeitschrift fuer Anorganische und Allgemeine Chemie'
_journal_page_first              325
_journal_page_last               329
_journal_volume                  632
_journal_year                    2006
_chemical_formula_sum            'F5 Ta'
_chemical_name_systematic        'Ta F5'
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 97.086
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   9.5462
_cell_length_b                   14.3678
_cell_length_c                   5.0174
_cell_volume                     682.920
_citation_journal_id_ASTM        ZAACAB
_cod_data_source_file            Brewer_ZAACAB_2006_642.cif
_cod_data_source_block           F5Ta1
_cod_original_cell_volume        682.9197
_cod_original_formula_sum        'F5 Ta1'
_cod_database_code               1528377
Structural studies of derivatives of methinyltricobalt enneacarbonyls. V. Crystal structure of bis(methinyltricobalt enneacarbonyl), [C Co3 (C O)9]2
Brice, M.D.; Penfold, B.R.; Inorganic Chemistry 11 (1972) 1381–1384; doi:

data_4343816
_publ_section_title
;
 Structural studies of derivatives of methinyltricobalt enneacarbonyls. V.
 Crystal structure of bis(methinyltricobalt enneacarbonyl), [C Co3 (C
 O)9]2
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              1381
_journal_page_last               1384
_journal_volume                  11
_journal_year                    1972
_chemical_formula_sum            'C20 Co6 O18'
_chemical_name_systematic        '(C Co3 (C O)9)2'
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 106.79
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.368
_cell_length_b                   9.45
_cell_length_c                   18.906
_cell_volume                     2799.670
_citation_journal_id_ASTM        INOCAJ
_cod_data_source_file            Brice_INOCAJ_1972_1686.cif
_cod_data_source_block           C20Co6O18
_cod_original_cell_volume        2799.67
_cod_database_code               4343816
A pure bismuth A site polar perovskite synthesized at ambient pressure
Bridges, C.A.; Kuang Xiaojun; Allix, M.; Suchomel, M.R.; Sterianou, I.; Sinclair, D.C.; Rosseinsky, M.J.; Angew. Chem. Int. ed. 46 (2007) 8785–8789; doi:

data_1528378
_publ_section_title
;
 A pure bismuth A site polar perovskite synthesized at ambient pressure
;
_journal_name_full               'Angew. Chem. Int. ed.'
_journal_page_first              8785
_journal_page_last               8789
_journal_volume                  46
_journal_year                    2007
_chemical_formula_sum            'Bi Fe0.25 Ni0.375 O3 Ti0.375'
_chemical_name_systematic        'Bi (Ti0.375 Fe0.25 Ni0.375) O3'
_space_group_IT_number           161
_symmetry_space_group_name_Hall  'R 3 -2"c'
_symmetry_space_group_name_H-M   'R 3 c :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            6
_cell_length_a                   5.58471
_cell_length_b                   5.58471
_cell_length_c                   13.8157
_cell_volume                     373.168
_citation_journal_id_ASTM        ACIEF5
_cod_data_source_file            Bridges_ACIEF5_2007_1328.cif
_cod_data_source_block           Bi1Fe0.25Ni0.375O3Ti0.375
_cod_original_cell_volume        373.1683
_cod_original_formula_sum        'Bi1 Fe0.25 Ni0.375 O3 Ti0.375'
_cod_database_code               1528378
A pure bismuth A site polar perovskite synthesized at ambient pressure
Bridges, C.A.; Allix, M.; Suchomel, M.R.; Sterianou, I.; Kuang Xiaojun; Sinclair, D.C.; Rosseinsky, M.J.; Angew. Chem. Int. ed. 46 (2007) 8785–8789; doi:

data_1528379
_publ_section_title
;
 A pure bismuth A site polar perovskite synthesized at ambient pressure
;
_journal_name_full               'Angew. Chem. Int. ed.'
_journal_page_first              8785
_journal_page_last               8789
_journal_volume                  46
_journal_year                    2007
_chemical_formula_sum            'Bi Fe0.25 Mg0.375 O3 Ti0.375'
_chemical_name_systematic        'Bi (Ti0.375 Fe0.25 Mg0.375) O3'
_space_group_IT_number           161
_symmetry_space_group_name_Hall  'R 3 -2"c'
_symmetry_space_group_name_H-M   'R 3 c :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            6
_cell_length_a                   5.60398
_cell_length_b                   5.60398
_cell_length_c                   13.93081
_cell_volume                     378.879
_citation_journal_id_ASTM        ACIEF5
_cod_data_source_file            Bridges_ACIEF5_2007_1329.cif
_cod_data_source_block           Bi1Fe0.25Mg0.375O3Ti0.375
_cod_original_cell_volume        378.8787
_cod_original_formula_sum        'Bi1 Fe0.25 Mg0.375 O3 Ti0.375'
_cod_database_code               1528379
The structure of the I phase, V41 Ni36 Si23, a pseudo superstructure
Brink-Shoemaker, C.; Shoemaker, D.P.; Acta Crystallographica B (24,1968-38,1982) 37 (1981) 1–8; doi:

data_2106489
_publ_section_title
;
 The structure of the I phase, V41 Ni36 Si23, a pseudo superstructure
;
_journal_name_full               'Acta Crystallographica B (24,1968-38,1982)'
_journal_page_first              1
_journal_page_last               8
_journal_volume                  37
_journal_year                    1981
_chemical_formula_sum            'Ni80.28 Si51.72 V96'
_chemical_name_systematic        'Ni80.28 V96 Si51.72'
_space_group_IT_number           9
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_cell_angle_alpha                90
_cell_angle_beta                 100.34
_cell_angle_gamma                90
_cell_formula_units_Z            1
_cell_length_a                   13.462
_cell_length_b                   23.381
_cell_length_c                   8.94
_cell_volume                     2768.212
_citation_journal_id_ASTM        ACBCAR
_cod_data_source_file            Brink-Shoemaker_ACBCAR_1981_19.cif
_cod_data_source_block           Ni80.28Si51.72V96
_cod_database_code               2106489
The Crystal Structure of Silver cyanate
Britton, D.; Dunitz, J.D.; Acta Crystallographica (1,1948-23,1967) 18 (1965) 424–428; doi:

data_2310529
_publ_section_title
;
 The Crystal Structure of Silver cyanate
;
_journal_name_full               'Acta Crystallographica (1,1948-23,1967)'
_journal_page_first              424
_journal_page_last               428
_journal_volume                  18
_journal_year                    1965
_chemical_formula_sum            'C Ag N O'
_chemical_name_systematic        'Ag N C O'
_space_group_IT_number           11
_symmetry_space_group_name_Hall  '-P 2yb'
_symmetry_space_group_name_H-M   'P 1 21/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.473
_cell_length_b                   6.372
_cell_length_c                   3.416
_cell_volume                     119.129
_citation_journal_id_ASTM        ACCRA9
_cod_data_source_file            Britton_ACCRA9_1965_1871.cif
_cod_data_source_block           C1Ag1N1O1
_cod_original_cell_volume        119.1294
_cod_original_formula_sum        'C1 Ag1 N1 O1'
_cod_database_code               2310529
Potassium Cryolite, a Complex Compound with Variable Composition
Brosset, C.; Arkiv foer Kemi, Mineralogi och Geologi, A 21 (1946) 1–9; doi:

data_1528380
_publ_section_title
;
 Potassium Cryolite, a Complex Compound with Variable Composition
;
_journal_name_full               'Arkiv foer Kemi, Mineralogi och Geologi, A'
_journal_page_first              1
_journal_page_last               9
_journal_volume                  21
_journal_year                    1946
_chemical_formula_sum            'Al F5.9 H0.2 K2.9 O0.1'
_chemical_name_systematic        'K2.9 Al F5.9 (H2 O)0.1'
_space_group_IT_number           225
_symmetry_space_group_name_Hall  '-F 4 2 3'
_symmetry_space_group_name_H-M   'F m -3 m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.418
_cell_length_b                   8.418
_cell_length_c                   8.418
_cell_volume                     596.522
_citation_journal_id_ASTM        ARKGAJ
_cod_data_source_file            Brosset_ARKGAJ_1946_319.cif
_cod_data_source_block           H0.2Al1F5.9K2.9O0.1
_cod_original_cell_volume        596.5225
_cod_original_formula_sum        'H0.2 Al1 F5.9 K2.9 O0.1'
_cod_database_code               1528380
The Crystal Structure of Protactinium oxytribromide
Brown, D.; Petcher, T.J.; Smith, A.J.; Acta Crystallographica B (24,1968-38,1982) 31 (1975) 1382–1385; doi:

data_2106490
_publ_section_title
;
 The Crystal Structure of Protactinium oxytribromide
;
_journal_name_full               'Acta Crystallographica B (24,1968-38,1982)'
_journal_page_first              1382
_journal_page_last               1385
_journal_volume                  31
_journal_year                    1975
_chemical_formula_sum            'Br3 O Pa'
_chemical_name_systematic        'Pa O Br3'
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 113.67
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.911
_cell_length_b                   3.871
_cell_length_c                   9.334
_cell_volume                     559.623
_citation_journal_id_ASTM        ACBCAR
_cod_data_source_file            Brown_ACBCAR_1975_1977.cif
_cod_data_source_block           Br3O1Pa1
_cod_original_cell_volume        559.6229
_cod_original_formula_sum        'Br3 O1 Pa1'
_cod_database_code               2106490
The Crystal Structure of Lithium Hydrazinium Sulfate
Brown, I.D.; Acta Crystallographica (1,1948-23,1967) 17 (1964) 654–660; doi:

data_2310530
_publ_section_title
;
 The Crystal Structure of Lithium Hydrazinium Sulfate
;
_journal_name_full               'Acta Crystallographica (1,1948-23,1967)'
_journal_page_first              654
_journal_page_last               660
_journal_volume                  17
_journal_year                    1964
_chemical_formula_sum            'H5 Li N2 O4 S'
_chemical_name_systematic        'Li (N2 H5) S O4'
_space_group_IT_number           33
_symmetry_space_group_name_Hall  'P 2c -2ab'
_symmetry_space_group_name_H-M   'P b n 21'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.99
_cell_length_b                   9.94
_cell_length_c                   5.18
_cell_volume                     462.888
_citation_journal_id_ASTM        ACCRA9
_cod_data_source_file            Brown_ACCRA9_1964_144.cif
_cod_data_source_block           H5Li1N2O4S1
_cod_original_cell_volume        462.8878
_cod_original_sg_symbol_Hall     'P 2c -2n (y,-x,z)'
_cod_original_formula_sum        'H5 Li1 N2 O4 S1'
_cod_database_code               2310530
The structure of maximum microcline
Brown, B.E.; Bailey, Y.W.; Acta Crystallographica (1,1948-23,1967) 17 (1964) 1391–1400; doi:

data_2310531
_publ_section_title
;
 The structure of maximum microcline
;
_journal_name_full               'Acta Crystallographica (1,1948-23,1967)'
_journal_page_first              1391
_journal_page_last               1400
_journal_volume                  17
_journal_year                    1964
_chemical_formula_sum            'Al K O8 Si3'
_chemical_name_systematic        'K (Al Si3 O8)'
_space_group_IT_number           2
_symmetry_space_group_name_Hall  '-P 1 (1/2*x+1/2*y,1/2*x-1/2*y,-z)'
_symmetry_space_group_name_H-M   'C -1'
_cell_angle_alpha                90.65
_cell_angle_beta                 115.83
_cell_angle_gamma                87.7
_cell_formula_units_Z            4
_cell_length_a                   8.56
_cell_length_b                   12.964
_cell_length_c                   7.215
_cell_volume                     720.071
_citation_journal_id_ASTM        ACCRA9
_cod_data_source_file            Brown_ACCRA9_1964_169.cif
_cod_data_source_block           Al1K1O8Si3
_cod_original_sg_symbol_H-M      'P -1 (a+b,a-b,-c)'
_cod_original_formula_sum        'Al1 K1 O8 Si3'
_cod_database_code               2310531
Layer structure polytism among niobium and tantalum selenides
Brown, B.E.; Beerntsen, D.J.; Acta Crystallographica (1,1948-23,1967) 18 (1965) 31–36; doi:

data_2310532
_publ_section_title
;
 Layer structure polytism among niobium and tantalum selenides
;
_journal_name_full               'Acta Crystallographica (1,1948-23,1967)'
_journal_page_first              31
_journal_page_last               36
_journal_volume                  18
_journal_year                    1965
_chemical_formula_sum            'Se2 Ta'
_chemical_name_systematic        'Ta Se2'
_space_group_IT_number           194
_symmetry_space_group_name_Hall  '-P 6c 2c'
_symmetry_space_group_name_H-M   'P 63/m m c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            2
_cell_length_a                   3.43
_cell_length_b                   3.43
_cell_length_c                   12.71
_cell_volume                     129.498
_citation_journal_id_ASTM        ACCRA9
_cod_data_source_file            Brown_ACCRA9_1965_1854.cif
_cod_data_source_block           Se2Ta1
_cod_original_cell_volume        129.4984
_cod_original_formula_sum        'Se2 Ta1'
_cod_database_code               2310532
Layer structure polytism among niobium and tantalum selenides
Brown, B.E.; Beerntsen, D.J.; Acta Crystallographica (1,1948-23,1967) 18 (1965) 31–36; doi:

data_2310533
_publ_section_title
;
 Layer structure polytism among niobium and tantalum selenides
;
_journal_name_full               'Acta Crystallographica (1,1948-23,1967)'
_journal_page_first              31
_journal_page_last               36
_journal_volume                  18
_journal_year                    1965
_chemical_formula_sum            'Nb Se2'
_space_group_IT_number           160
_symmetry_space_group_name_Hall  'R 3 -2"'
_symmetry_space_group_name_H-M   'R 3 m :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            3
_cell_length_a                   3.45
_cell_length_b                   3.45
_cell_length_c                   18.88
_cell_volume                     194.613
_citation_journal_id_ASTM        ACCRA9
_cod_data_source_file            Brown_ACCRA9_1965_1855.cif
_cod_data_source_block           Nb1Se2
_cod_original_cell_volume        194.6125
_cod_original_formula_sum        'Nb1 Se2'
_cod_database_code               2310533
Layer structure polytypism among niobium and tantalum selenides
Brown, B.E.; Beerntsen, D.J.; Acta Crystallographica (1,1948-23,1967) 18 (1965) 31–36; doi:

data_2310534
_publ_section_title
;
 Layer structure polytypism among niobium and tantalum selenides
;
_journal_name_full               'Acta Crystallographica (1,1948-23,1967)'
_journal_page_first              31
_journal_page_last               36
_journal_volume                  18
_journal_year                    1965
_chemical_formula_sum            'Nb Se2'
_space_group_IT_number           187
_symmetry_space_group_name_Hall  'P -6 2'
_symmetry_space_group_name_H-M   'P -6 m 2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            4
_cell_length_a                   3.44
_cell_length_b                   3.44
_cell_length_c                   25.24
_cell_volume                     258.665
_citation_journal_id_ASTM        ACCRA9
_cod_data_source_file            Brown_ACCRA9_1965_1856.cif
_cod_data_source_block           Nb1Se2
_cod_original_cell_volume        258.6645
_cod_original_formula_sum        'Nb1 Se2'
_cod_database_code               2310534
Layer structure polytism among niobium and tantalum selenides
Brown, B.E.; Beerntsen, D.J.; Acta Crystallographica (1,1948-23,1967) 18 (1965) 31–36; doi:

data_2310535
_publ_section_title
;
 Layer structure polytism among niobium and tantalum selenides
;
_journal_name_full               'Acta Crystallographica (1,1948-23,1967)'
_journal_page_first              31
_journal_page_last               36
_journal_volume                  18
_journal_year                    1965
_chemical_formula_sum            'Se2 Ta'
_chemical_name_systematic        'Ta Se2'
_space_group_IT_number           194
_symmetry_space_group_name_Hall  '-P 6c 2c'
_symmetry_space_group_name_H-M   'P 63/m m c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            4
_cell_length_a                   3.46
_cell_length_b                   3.46
_cell_length_c                   25.18
_cell_volume                     261.059
_citation_journal_id_ASTM        ACCRA9
_cod_data_source_file            Brown_ACCRA9_1965_1857.cif
_cod_data_source_block           Se2Ta1
_cod_original_cell_volume        261.0589
_cod_original_formula_sum        'Se2 Ta1'
_cod_database_code               2310535