LMucko/crystallography-open-database huggingface dataset:
M X2-Verbindungen der Erdalkali- und Seltenen Erdmetalle mit Gallium, Indium und Thallium
Iandelli, A.; Zeitschrift fuer Anorganische und Allgemeine Chemie 330 (1964) 221–232; doi:

data_1527560
_publ_section_title
;
 M X2-Verbindungen der Erdalkali- und Seltenen Erdmetalle mit Gallium,
 Indium und Thallium
;
_journal_name_full
'Zeitschrift fuer Anorganische und Allgemeine Chemie'
_journal_page_first              221
_journal_page_last               232
_journal_volume                  330
_journal_year                    1964
_chemical_formula_sum            'Tl3 Yb'
_space_group_IT_number           221
_symmetry_space_group_name_Hall  '-P 4 2 3'
_symmetry_space_group_name_H-M   'P m -3 m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            1
_cell_length_a                   4.613
_cell_length_b                   4.613
_cell_length_c                   4.613
_cell_volume                     98.164
_citation_journal_id_ASTM        ZAACAB
_cod_data_source_file            Iandelli_ZAACAB_1964_152.cif
_cod_data_source_block           Tl3Yb1
_cod_original_cell_volume        98.16357
_cod_original_formula_sum        'Tl3 Yb1'
_cod_database_code               1527560
M X2-Verbindungen der Erdalkali- und Seltenen Erdmetalle mit Gallium, Indium und Thallium
Iandelli, A.; Zeitschrift fuer Anorganische und Allgemeine Chemie 330 (1964) 221–232; doi:

data_1527561
_publ_section_title
;
 M X2-Verbindungen der Erdalkali- und Seltenen Erdmetalle mit Gallium,
 Indium und Thallium
;
_journal_name_full
'Zeitschrift fuer Anorganische und Allgemeine Chemie'
_journal_page_first              221
_journal_page_last               232
_journal_volume                  330
_journal_year                    1964
_chemical_formula_sum            'Sr Tl2'
_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                   5.074
_cell_length_b                   5.074
_cell_length_c                   8.217
_cell_volume                     183.208
_citation_journal_id_ASTM        ZAACAB
_cod_data_source_file            Iandelli_ZAACAB_1964_84.cif
_cod_data_source_block           Sr1Tl2
_cod_original_cell_volume        183.2082
_cod_original_formula_sum        'Sr1 Tl2'
_cod_database_code               1527561
Nitrogen atom location in rhombohedral and hexagonal RE2 Fe17 Nx compounds
Ibberson, R.M.; Moze, O.; Jacobs, T.H.; Buschow, K.H.J.; Journal of Physics: Condensed Matter 3 (1991) 1219–1226; doi:

data_1527562
_publ_section_title
;
 Nitrogen atom location in rhombohedral and hexagonal RE2 Fe17 Nx
 compounds
;
_journal_name_full               'Journal of Physics: Condensed Matter'
_journal_page_first              1219
_journal_page_last               1226
_journal_volume                  3
_journal_year                    1991
_chemical_formula_sum            'Fe17 N2.6 Nd2'
_chemical_name_systematic        'Fe17 Nd2 N2.6'
_space_group_IT_number           166
_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                   8.776
_cell_length_b                   8.776
_cell_length_c                   12.6366
_cell_volume                     842.857
_citation_journal_id_ASTM        JCOMEL
_cod_data_source_file            Ibberson_JCOMEL_1991_475.cif
_cod_data_source_block           Fe17N2.6Nd2
_cod_original_cell_volume        842.8574
_cod_database_code               1527562
Redetermination of the structure of nitrosylpentaamminecobalt(III) dichloride
Ibers, J.A.; Pratt, C.S.; Coyle, B.A.; Journal of the Chemical Society A: Inorganic, Physical, Theoretical (1966-1971) 1971 (1971) 2146–2151; doi:

data_1527563
_publ_section_title
;
 Redetermination of the structure of nitrosylpentaamminecobalt(III)
 dichloride
;
_journal_name_full
;
Journal of the Chemical Society A: Inorganic, Physical, Theoretical (1966-1971)
;
_journal_page_first              2146
_journal_page_last               2151
_journal_volume                  1971
_journal_year                    1971
_chemical_formula_sum            'Cl2 Co H12 N6 O'
_chemical_name_systematic        '(Co (N O) (N H3)5) Cl2'
_space_group_IT_number           63
_symmetry_space_group_name_Hall  '-C 2c 2'
_symmetry_space_group_name_H-M   'C m c m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.459
_cell_length_b                   8.753
_cell_length_c                   10.459
_cell_volume                     957.497
_citation_journal_id_ASTM        JCSIAP
_cod_data_source_file            Ibers_JCSIAP_1971_1856.cif
_cod_data_source_block           Cl2Co1H12N6O1
_cod_original_cell_volume        957.4966
_cod_original_formula_sum        'Cl2 Co1 H12 N6 O1'
_cod_database_code               1527563
Magnetic and crystallographic properties of Nd Co4 M (M= B, Al, Ga)
Ido, H.; Sinha, V.K.; Wallace, W.E.; Suzuki, T.; Cheng, S.F.; Sankar, S.G.; Journal of Applied Physics 67 (1990) 4635–4637; doi:

data_1527564
_publ_section_title
;
 Magnetic and crystallographic properties of Nd Co4 M (M= B, Al, Ga)
;
_journal_name_full               'Journal of Applied Physics'
_journal_page_first              4635
_journal_page_last               4637
_journal_volume                  67
_journal_year                    1990
_chemical_formula_sum            'Co4 Ga Nd'
_chemical_name_systematic        '(Co4 Ga) Nd'
_space_group_IT_number           191
_symmetry_space_group_name_Hall  '-P 6 2'
_symmetry_space_group_name_H-M   'P 6/m m m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            1
_cell_length_a                   5.073
_cell_length_b                   5.073
_cell_length_c                   4.27
_cell_volume                     95.167
_citation_journal_id_ASTM        JAPIAU
_cod_data_source_file            Ido_JAPIAU_1990_341.cif
_cod_data_source_block           Co4Ga1Nd1
_cod_original_cell_volume        95.1674
_cod_original_formula_sum        'Co4 Ga1 Nd1'
_cod_database_code               1527564
Ternary chalcogenide compounds A B2 X4: The crystal structures of Si Pb2 S4 and Si Pb2 Se4
Iglesias, J.E.; Steinfink, H.; Journal of Solid State Chemistry 6 (1973) 93–98; doi:

data_1527565
_publ_section_title
;
 Ternary chalcogenide compounds A B2 X4: The crystal structures of Si Pb2
 S4 and Si Pb2 Se4
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              93
_journal_page_last               98
_journal_volume                  6
_journal_year                    1973
_chemical_formula_sum            'Pb2 S4 Si'
_chemical_name_systematic        'Pb2 (Si S4)'
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 108.805
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.4721
_cell_length_b                   6.6344
_cell_length_c                   16.832
_cell_volume                     684.162
_citation_journal_id_ASTM        JSSCBI
_cod_data_source_file            Iglesias_JSSCBI_1973_1990.cif
_cod_data_source_block           Pb2S4Si1
_cod_original_cell_volume        684.1617
_cod_original_formula_sum        'Pb2 S4 Si1'
_cod_database_code               1527565
Ternary chalcogenide compounds A B2 X4: The crystal structures of Si Pb2 S4 and Si Pb2 Se4
Iglesias, J.E.; Steinfink, H.; Journal of Solid State Chemistry 6 (1973) 93–98; doi:

data_1527566
_publ_section_title
;
 Ternary chalcogenide compounds A B2 X4: The crystal structures of Si Pb2
 S4 and Si Pb2 Se4
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              93
_journal_page_last               98
_journal_volume                  6
_journal_year                    1973
_chemical_formula_sum            'Pb2 Se4 Si'
_chemical_name_systematic        'Pb2 (Si Se4)'
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 108.355
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.567
_cell_length_b                   7.0745
_cell_length_c                   13.616
_cell_volume                     783.244
_citation_journal_id_ASTM        JSSCBI
_cod_data_source_file            Iglesias_JSSCBI_1973_1991.cif
_cod_data_source_block           Pb2Se4Si1
_cod_original_cell_volume        783.2437
_cod_original_formula_sum        'Pb2 Se4 Si1'
_cod_database_code               1527566
The crystal structures and phase transition of alpha and beta Ba Cu4 S3
Iglesias, J.E.; Pachali, K.E.; Steinfink, H.; Materials Research Bulletin 7 (1972) 1247–1258; doi:

data_1527567
_publ_section_title
;
 The crystal structures and phase transition of alpha and beta Ba Cu4 S3
;
_journal_name_full               'Materials Research Bulletin'
_journal_page_first              1247
_journal_page_last               1258
_journal_volume                  7
_journal_year                    1972
_chemical_formula_sum            'Ba Cu4 S3'
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.7686
_cell_length_b                   4.0348
_cell_length_c                   13.2805
_cell_volume                     577.026
_citation_journal_id_ASTM        MRBUAC
_cod_data_source_file            Iglesias_MRBUAC_1972_1268.cif
_cod_data_source_block           Ba1Cu4S3
_cod_original_cell_volume        577.0264
_cod_original_formula_sum        'Ba1 Cu4 S3'
_cod_database_code               1527567
The crystal structures and phase transition of alpha and beta Ba Cu4 S3
Iglesias, J.E.; Pachali, K.E.; Steinfink, H.; Materials Research Bulletin 7 (1972) 1247–1258; doi:

data_1527568
_publ_section_title
;
 The crystal structures and phase transition of alpha and beta Ba Cu4 S3
;
_journal_name_full               'Materials Research Bulletin'
_journal_page_first              1247
_journal_page_last               1258
_journal_volume                  7
_journal_year                    1972
_chemical_formula_sum            'Ba Cu4 S3'
_space_group_IT_number           63
_symmetry_space_group_name_Hall  '-C 2c 2'
_symmetry_space_group_name_H-M   'C m c m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   4.0584
_cell_length_b                   13.8637
_cell_length_c                   10.3733
_cell_volume                     583.648
_citation_journal_id_ASTM        MRBUAC
_cod_data_source_file            Iglesias_MRBUAC_1972_1269.cif
_cod_data_source_block           Ba1Cu4S3
_cod_original_cell_volume        583.6479
_cod_original_formula_sum        'Ba1 Cu4 S3'
_cod_database_code               1527568
A refinement of the pseudo crystal structure of scleroclase Pb As2 S4
Iitaka, Y.; Nowacki, W.; Acta Crystallographica (1,1948-23,1967) 14 (1961) 1291–1292; doi:

data_2310408
_publ_section_title
;
 A refinement of the pseudo crystal structure of scleroclase Pb As2 S4
;
_journal_name_full               'Acta Crystallographica (1,1948-23,1967)'
_journal_page_first              1291
_journal_page_last               1292
_journal_volume                  14
_journal_year                    1961
_chemical_formula_sum            'As2 Pb S4'
_chemical_name_systematic        'Pb As2 S4'
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   19.62
_cell_length_b                   7.89
_cell_length_c                   4.19
_cell_volume                     648.620
_citation_journal_id_ASTM        ACCRA9
_cod_data_source_file            Iitaka_ACCRA9_1961_1472.cif
_cod_data_source_block           As2Pb1S4
_cod_original_cell_volume        648.6196
_cod_original_sg_symbol_Hall     '-P 2ybc (x-z,y,z)'
_cod_original_formula_sum        'As2 Pb1 S4'
_cod_database_code               2310408
Al-Zn-Pr system at 593 K
Ikromov, A.Z.; Ganiev, I.N.; Kotur, B.Ya.; Kinzhibalo, V.V.; Vakhobov, A.V.; Izvestiya Akademii Nauk SSSR, Metally 1990 (1990) 219–221; doi:

data_1527569
_publ_section_title
;
 Al-Zn-Pr system at 593 K
;
_journal_name_full               'Izvestiya Akademii Nauk SSSR, Metally'
_journal_page_first              219
_journal_page_last               221
_journal_volume                  1990
_journal_year                    1990
_chemical_formula_sum            'Al2 Pr Zn2'
_space_group_IT_number           139
_symmetry_space_group_name_Hall  '-I 4 2'
_symmetry_space_group_name_H-M   'I 4/m m m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   4.226
_cell_length_b                   4.226
_cell_length_c                   10.995
_cell_volume                     196.361
_citation_journal_id_ASTM        IZNMAQ
_cod_data_source_file            Ikromov_IZNMAQ_1990_182.cif
_cod_data_source_block           Al2Pr1Zn2
_cod_original_cell_volume        196.3605
_cod_original_formula_sum        'Al2 Pr1 Zn2'
_cod_database_code               1527569
Al-Zn-Pr system at 593 K
Ikromov, A.Z.; Ganiev, I.N.; Vakohobov, A.V.; Kotur, B.Ya.; Kinzhibalo, V.V.; Izvestiya Akademii Nauk SSSR, Metally 1990 (1990) 219–221; doi:

data_1527570
_publ_section_title
;
 Al-Zn-Pr system at 593 K
;
_journal_name_full               'Izvestiya Akademii Nauk SSSR, Metally'
_journal_page_first              219
_journal_page_last               221
_journal_volume                  1990
_journal_year                    1990
_chemical_formula_sum            'Al0.6 Pr Zn0.4'
_chemical_name_systematic        '(Al0.6 Zn0.4) Pr'
_space_group_IT_number           221
_symmetry_space_group_name_Hall  '-P 4 2 3'
_symmetry_space_group_name_H-M   'P m -3 m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            1
_cell_length_a                   3.701
_cell_length_b                   3.701
_cell_length_c                   3.701
_cell_volume                     50.694
_citation_journal_id_ASTM        IZNMAQ
_cod_data_source_file            Ikromov_IZNMAQ_1990_183.cif
_cod_data_source_block           Al0.6Pr1Zn0.4
_cod_original_cell_volume        50.69408
_cod_original_formula_sum        'Al0.6 Pr1 Zn0.4'
_cod_database_code               1527570
Crystal structure of alinite
Ilyukhin, V.V.; Nevskii, N.N.; Howie, R.A.; Bickbau, M.J.; Nature (London) 269 (1977) 397–398; doi:

data_1527571
_publ_section_title
;
 Crystal structure of alinite
;
_journal_name_full               'Nature (London)'
_journal_page_first              397
_journal_page_last               398
_journal_volume                  269
_journal_year                    1977
_chemical_formula_sum            'Al1.11 Ca11.76 Cl1.05 O19.82 Si3.33'
_chemical_name_systematic        'Ca11.76 ((Si0.75 Al0.25)4.44 O19.82) Cl1.05'
_space_group_IT_number           121
_symmetry_space_group_name_Hall  'I -4 2'
_symmetry_space_group_name_H-M   'I -4 2 m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   10.4714
_cell_length_b                   10.4714
_cell_length_c                   8.6171
_cell_volume                     944.867
_citation_journal_id_ASTM        NATUAS
_cod_data_source_file            Ilyukhin_NATUAS_1977_1952.cif
_cod_data_source_block           Al1.11Ca11.76Cl1.05O19.82Si3.33
_cod_original_cell_volume        944.8669
_cod_database_code               1527571
Solid solubility in Na Cl-type uranium compounds
Imoto, S.; Niihara, K.; Stoecker, H.J.; Thermodyn. Nucl. Mater., Proc. Symp., Vienna 1967 (1968) 371–383; doi:

data_1527572
_publ_section_title
;
 Solid solubility in Na Cl-type uranium compounds
;
_journal_name_full
'Thermodyn. Nucl. Mater., Proc. Symp., Vienna'
_journal_page_first              371
_journal_page_last               383
_journal_volume                  1967
_journal_year                    1968
_chemical_formula_sum            'S0.81 Si0.19 U'
_chemical_name_systematic        'U (S0.81 Si0.19)'
_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                   5.4905
_cell_length_b                   5.4905
_cell_length_c                   5.4905
_cell_volume                     165.514
_citation_journal_id_ASTM        20EZAR
_cod_data_source_file            Imoto_20EZAR_1968_23.cif
_cod_data_source_block           S0.81Si0.19U1
_cod_original_cell_volume        165.5144
_cod_original_formula_sum        'S0.81 Si0.19 U1'
_cod_database_code               1527572
Synthesis by hydrogen-driven disproportionation reactions. Synthesis and structure of the hexazirconium dodecahalide clusters Zr6 Cl12 and Zr6 Br12 and the double salt Zr6 Cl12 M2 Zr Cl6 (M= Na, K, Cs)
Imoto, H.; Corbett, J.D.; Cisar, A.; Inorganic Chemistry 20 (1981) 145–151; doi:

data_4343780
_publ_section_title
;
 Synthesis by hydrogen-driven disproportionation reactions. Synthesis and
 structure of the hexazirconium dodecahalide clusters Zr6 Cl12 and Zr6
 Br12 and the double salt Zr6 Cl12 M2 Zr Cl6 (M= Na, K, Cs)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              145
_journal_page_last               151
_journal_volume                  20
_journal_year                    1981
_chemical_formula_sum            'Cl18 K2 Zr7'
_chemical_name_systematic        '(Zr6 Cl12) (K2 Zr Cl6)'
_space_group_IT_number           148
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            3
_cell_length_a                   9.499
_cell_length_b                   9.499
_cell_length_c                   25.88
_cell_volume                     2022.324
_citation_journal_id_ASTM        INOCAJ
_cod_data_source_file            Imoto_INOCAJ_1981_1351.cif
_cod_data_source_block           Cl18K2Zr7
_cod_original_cell_volume        2022.323
_cod_database_code               4343780
Phase transition between hydrogen superstructures with k=(001) and k=0 via incommensurate phase in Zr V2 Dx (2.8 <x <3.9)
Irodova, A.V.; Bouree, F.; Andre, G.; Journal of Alloys Compd. 302 (2000) 159–168; doi:

data_1527573
_publ_section_title
;
 Phase transition between hydrogen superstructures with k=(001) and k=0
 via incommensurate phase in Zr V2 Dx (2.8 <x <3.9)
;
_journal_name_full               'Journal of Alloys Compd.'
_journal_page_first              159
_journal_page_last               168
_journal_volume                  302
_journal_year                    2000
_chemical_formula_sum            'D2.8 V2 Zr'
_chemical_name_systematic        'Zr V2 D2.8'
_space_group_IT_number           52
_symmetry_space_group_name_Hall  '-P 2a 2bc'
_symmetry_space_group_name_H-M   'P n n a'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.4756
_cell_length_b                   5.4248
_cell_length_c                   7.731
_cell_volume                     229.642
_citation_journal_id_ASTM        JALCEU
_cod_data_source_file            Irodova_JALCEU_2000_178.cif
_cod_data_source_block           D2.8V2Zr1
_cod_original_cell_volume        229.6419
_cod_original_formula_sum        'D2.8 V2 Zr1'
_cod_database_code               1527573
A three-dimensional refinement of the structure of holmquistite
Irusteta, M.C.; Whittaker, E.J.W.; Acta Crystallographica B (24,1968-38,1982) 31 (1975) 145–150; doi:

data_2106343
_publ_section_title
;
 A three-dimensional refinement of the structure of holmquistite
;
_journal_name_full               'Acta Crystallographica B (24,1968-38,1982)'
_journal_page_first              145
_journal_page_last               150
_journal_volume                  31
_journal_year                    1975
_chemical_formula_sum
'Al8.02 Fe6 H8 Li7.28 Mg6.96 Na0.08 O96 Si31.42'
_chemical_name_systematic
;
Na0.08 Li7.28 Mg6.96 Fe6 (Al8.02 Si31.42 O88) (O H)8
;
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            1
_cell_length_a                   18.28999
_cell_length_b                   17.67
_cell_length_c                   5.28
_cell_volume                     1706.412
_citation_journal_id_ASTM        ACBCAR
_cod_data_source_file            Irusteta_ACBCAR_1975_910.cif
_cod_data_source_block           H8Al8.02Fe6Li7.28Mg6.96Na0.08O96Si31.42
_cod_original_formula_sum
'H8 Al8.02 Fe6 Li7.28 Mg6.96 Na0.08 O96 Si31.42'
_cod_database_code               2106343
Neutron diffraction study of the structural and magnetic properties of the R2 Fe17 Hx(Dx) ternary compounds (R= Ce, Nd and Ho)
Isnard, O.; Miraglia, S.; Soubeyroux, J.L.; Stergiou, A.; Fruchart, D.; Journal of the Less-Common Metals 162 (1990) 273–284; doi:

data_1527574
_publ_section_title
;
 Neutron diffraction study of the structural and magnetic properties of
 the R2 Fe17 Hx(Dx) ternary compounds (R= Ce, Nd and Ho)
;
_journal_name_full               'Journal of the Less-Common Metals'
_journal_page_first              273
_journal_page_last               284
_journal_volume                  162
_journal_year                    1990
_chemical_formula_sum            'Ce2 Fe17'
_space_group_IT_number           166
_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                   8.632
_cell_length_b                   8.632
_cell_length_c                   12.535
_cell_volume                     808.868
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