5,6-Fused bicyclic tetrazolo-pyridazine energetic materials.
Chen, Sitong; Liu, Yuji; Feng, Yongan; Yang, Xianjin; Zhang, Qinghua; Chemical communications (Cambridge, England) 56 (2020) 1493–1496; doi:10.1039/c9cc08782f

data_7125725
_publ_section_title
;
 5,6-Fused bicyclic tetrazolo-pyridazine energetic materials.
;
_journal_issue                   10
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              1493
_journal_page_last               1496
_journal_paper_doi               10.1039/c9cc08782f
_journal_volume                  56
_journal_year                    2020
_chemical_formula_moiety         'C4 H2 N8 O4'
_chemical_formula_sum            'C4 H2 N8 O4'
_chemical_formula_weight         226.14
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2019-08-27
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2019-09-11 deposited with the CCDC.	2020-01-02 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 106.486(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   11.6487(5)
_cell_length_b                   9.8870(5)
_cell_length_c                   14.4221(7)
_cell_measurement_reflns_used    2998
_cell_measurement_temperature    100
_cell_measurement_theta_max      25.74
_cell_measurement_theta_min      2.53
_cell_volume                     1592.72(13)
_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  'XL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100.0
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0969
_diffrn_reflns_av_unetI/netI     0.1061
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            12802
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.53
_diffrn_source                   'fine-focus sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.168
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6804
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0944 before and 0.0804 after correction.
The Ratio of minimum to maximum transmission is 0.9126.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'light green'
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    green
_exptl_crystal_density_diffrn    1.886
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             912
_exptl_crystal_size_max          0.11
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.393
_refine_diff_density_min         -0.413
_refine_diff_density_rms         0.090
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         3606
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.1329
_refine_ls_R_factor_gt           0.0597
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0395P)^2^+1.0403P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1083
_refine_ls_wR_factor_ref         0.1415
_reflns_number_gt                2086
_reflns_number_total             3606
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c9cc08782f2.cif
_cod_data_source_block           22019878qcst2_0m
_cod_depositor_comments
'Adding full bibliography for 7125722--7125725.cif.'
_cod_database_code               7125725
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All N(H,H) groups
2.a X=CH2 refined with riding coordinates:
 N1(H1A,H1B), N9(H9A,H9B)
;
_olex2_submission_special_instructions 'No special instructions were received'