Intermolecular Weak Hydrogen Bonding (Het-H-N/O): an Effective Strategy for the Synthesis of Monosubstituted 1,2,4,5-Tetrazine-Based Energetic Materials with Excellent Sensitivity.
Liu, Yingle; Zhao, Gang; Yu, Qiong; Tang, Yongxing; Imler, Gregory H.; Parrish, Damon A.; Shreeve, Jean'ne M.; The Journal of organic chemistry  (2019) –; doi:10.1021/acs.joc.9b02484

data_4037667
_publ_section_title
;
 Intermolecular Weak Hydrogen Bonding (Het-H-N/O): an Effective Strategy
 for the Synthesis of Monosubstituted 1,2,4,5-Tetrazine-Based Energetic
 Materials with Excellent Sensitivity.
;
_journal_name_full               'The Journal of organic chemistry'
_journal_paper_doi               10.1021/acs.joc.9b02484
_journal_year                    2019
_chemical_formula_moiety         'C8 H4 N16 O2'
_chemical_formula_sum            'C8 H4 N16 O2'
_chemical_formula_weight         356.27
_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
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 92.272(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.8020(5)
_cell_length_b                   6.9928(4)
_cell_length_c                   11.5535(7)
_cell_measurement_reflns_used    2056
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.53
_cell_measurement_theta_min      2.32
_cell_volume                     710.57(7)
_computing_cell_refinement       'Bruker APEX3 v2015.5-2 (Bruker, 2015)'
_computing_data_collection       'Bruker APEX3 v2015.5-2 (Bruker, 2015)'
_computing_data_reduction
;
Bruker SAINT v8.34A (Bruker, 2013), Bruker XPREP v2014/2 (Bruker, 2014)
;
_computing_molecular_graphics    'Bruker SHELXTL v2014/7 (Bruker, 2014)'
_computing_publication_material  'Bruker SHELXTL v2014/7 (Bruker, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'Bruker SHELXTL v2014/7 (Bruker, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.963
_diffrn_measurement_device_type  'Bruker SMART APEX II CCD'
_diffrn_measurement_method       '\w scans'
_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  0.0262
_diffrn_reflns_av_unetI/netI     0.0245
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.963
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            8200
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.963
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.070
_diffrn_reflns_theta_min         2.316
_exptl_absorpt_coefficient_mu    0.133
_exptl_absorpt_correction_T_max  0.7460
_exptl_absorpt_correction_T_min  0.6938
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2014/5 (Bruker, 2008)'
_exptl_crystal_colour            'clear orange'
_exptl_crystal_density_diffrn    1.665
_exptl_crystal_description       chunk
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.324
_exptl_crystal_size_mid          0.300
_exptl_crystal_size_min          0.071
_refine_diff_density_max         0.257
_refine_diff_density_min         -0.179
_refine_diff_density_rms         0.038
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     118
_refine_ls_number_reflns         2009
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0616
_refine_ls_R_factor_gt           0.0389
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0469P)^2^+0.1115P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0933
_refine_ls_wR_factor_ref         0.1043
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1424
_reflns_number_total             2009
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo9b02484_si_002.cif
_cod_data_source_block           shrv726
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4037667
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.958
_shelx_estimated_absorpt_t_max   0.991