1,3,4-Oxadiazole based thermostable energetic materials: synthesis and structure–property relationship
Yan, Tingou; Cheng, Guangbin; Yang, Hongwei; New Journal of Chemistry 44 (2020) 6643–6651; doi:10.1039/D0NJ00518E

data_7059430
_publ_section_title
;
 1,3,4-Oxadiazole based thermostable energetic materials: synthesis and
 structure--property relationship
;
_journal_issue                   16
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              6643
_journal_page_last               6651
_journal_paper_doi               10.1039/D0NJ00518E
_journal_volume                  44
_journal_year                    2020
_chemical_formula_moiety         'C8 H4 N8 O5, H2 O'
_chemical_formula_sum            'C8 H6 N8 O6'
_chemical_formula_weight         310.21
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2019-01-21
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2019-10-18 deposited with the CCDC.	2020-03-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   13.9157(11)
_cell_length_b                   8.6591(7)
_cell_length_c                   18.9441(17)
_cell_measurement_reflns_used    2917
_cell_measurement_temperature    100
_cell_measurement_theta_max      25.258
_cell_measurement_theta_min      2.601
_cell_volume                     2282.7(3)
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100.0
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0973
_diffrn_reflns_av_unetI/netI     0.0593
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            14525
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.009
_diffrn_reflns_theta_max         25.009
_diffrn_reflns_theta_min         2.601
_exptl_absorpt_coefficient_mu    0.157
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.6391
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1576 before and 0.0945 after correction. The Ratio of minimum to maximum transmission is 0.8574. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.805
_exptl_crystal_description       block
_exptl_crystal_F_000             1264
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.273
_refine_diff_density_min         -0.353
_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.066
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         2019
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.0920
_refine_ls_R_factor_gt           0.0488
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0550P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1052
_refine_ls_wR_factor_ref         0.1220
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1380
_reflns_number_total             2019
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0nj00518e2.cif
_cod_data_source_block           22019094_0m
_cod_depositor_comments
;Adding full bibliography for 7059427--7059434.cif.

 Adding full bibliography for 7059427--7059434.cif.
;
_cod_database_code               7059430
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.988
_shelx_estimated_absorpt_t_min   0.971
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All O(H,H) groups
2. Restrained distances
 N8-H8 = N5-H5
 0.84 with sigma of 0.02
3.a Free rotating group:
 O6(H6A,H6B)
3.b Aromatic/amide H refined with riding coordinates:
 C1(H1), C8(H8A)
;
_olex2_submission_special_instructions 'No special instructions were received'