1-Nitro-2-trinitromethyl substituted imidazoles: a new family of high performance energetic materials
Xu, Yuangang; Shen, Cheng; Lin, Qiuhan; Wang, Pengcheng; Jiang, Chao; Lu, Ming; Journal of Materials Chemistry A 4 (2016) 17791–; doi:10.1039/C6TA08831G

data_7236385
_publ_section_title
;
 1-Nitro-2-trinitromethyl substituted imidazoles: a new family of high
 performance energetic materials
;
_journal_issue                   45
_journal_name_full               'Journal of Materials Chemistry A'
_journal_page_first              17791
_journal_paper_doi               10.1039/C6TA08831G
_journal_volume                  4
_journal_year                    2016
_chemical_formula_sum            'C8 H10 N6 O8'
_chemical_formula_weight         318.22
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-10-26 deposited with the CCDC.
2016-10-27 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 95.08(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   21.390(4)
_cell_length_b                   12.501(3)
_cell_length_c                   9.957(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      13
_cell_measurement_theta_min      9
_cell_volume                     2652.0(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Nonius CAD4'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0306
_diffrn_reflns_av_sigmaI/netI    0.0390
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       0
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_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -12
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_diffrn_reflns_theta_full        25.37
_diffrn_reflns_theta_max         25.37
_diffrn_reflns_theta_min         1.89
_diffrn_standards_decay_%        1
_diffrn_standards_interval_count 200
_diffrn_standards_interval_time  2h
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.144
_exptl_absorpt_correction_T_max  0.9858
_exptl_absorpt_correction_T_min  0.9719
_exptl_absorpt_correction_type   psi-scan
_exptl_crystal_density_diffrn    1.594
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1312
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
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_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
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_refine_ls_R_factor_all          0.0921
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_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1492
_refine_ls_wR_factor_ref         0.1711
_reflns_number_gt                1565
_reflns_number_total             2424
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ta08831g2.cif
_cod_data_source_block           x
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        2652.0(9)
_cod_original_sg_symbol_H-M      C2/C
_cod_database_code               7236385