Combination of gem-dinitromethyl functionality and a 5-amino-1,3,4-oxadiazole framework for zwitterionic energetic materials.
Liu, Tianlin; Liao, Sicheng; Song, Siwei; Wang, Kangcai; Jin, Yunhe; Zhang, Qinghua; Chemical communications (Cambridge, England) 56 (2019) 209–212; doi:10.1039/c9cc08182h

data_7125623
_publ_section_title
;
 Combination of gem-dinitromethyl functionality and a
 5-amino-1,3,4-oxadiazole framework for zwitterionic energetic materials.
;
_journal_issue                   2
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              209
_journal_page_last               212
_journal_paper_doi               10.1039/c9cc08182h
_journal_volume                  56
_journal_year                    2019
_chemical_formula_moiety         'C3 H3 N5 O5'
_chemical_formula_sum            'C3 H3 N5 O5'
_chemical_formula_weight         189.10
_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_audit_creation_date             2017-03-30
_audit_creation_method
;
Olex2 1.2-beta
(compiled 2017.03.14 svn.r3398 for OlexSys, GUI svn.r5328)
;
_audit_update_record
;
2019-06-27 deposited with the CCDC.	2019-11-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.2688(10)
_cell_length_b                   6.1121(7)
_cell_length_c                   13.2779(17)
_cell_measurement_reflns_used    2027
_cell_measurement_temperature    173
_cell_measurement_theta_max      27.06
_cell_measurement_theta_min      3.07
_cell_volume                     671.06(14)
_computing_cell_refinement       'SAINT v7.68A (Bruker, 2009)'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_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    'SIR2004 (Burla et al., 2007)'
_diffrn_ambient_temperature      173
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.985
_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  0.0262
_diffrn_reflns_av_unetI/netI     0.0323
_diffrn_reflns_Laue_measured_fraction_full 0.989
_diffrn_reflns_Laue_measured_fraction_max 0.985
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            3692
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.988
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.492
_diffrn_reflns_theta_min         3.068
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.177
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6640
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2008/1 (Bruker,2008) was used for absorption correction. wR2(int) was 0.0846 before and 0.0410 after correction. The Ratio of minimum to maximum transmission is 0.8906. The \l/2 correction factor is 0.0015.'
_exptl_crystal_colour            'clear yellowish yellow'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   yellowish
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.872
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             384
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.200
_refine_diff_density_min         -0.183
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.1(17)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.105
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     123
_refine_ls_number_reflns         1436
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.105
_refine_ls_R_factor_all          0.0309
_refine_ls_R_factor_gt           0.0292
_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^)+(0.0475P)^2^+0.0299P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0765
_refine_ls_wR_factor_ref         0.0779
_reflns_Friedel_coverage         0.919
_reflns_Friedel_fraction_full    0.995
_reflns_Friedel_fraction_max     0.992
_reflns_number_gt                1367
_reflns_number_total             1436
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cc08182h2.cif
_cod_data_source_block           mo_ltl-4-2-2_0ma
_cod_depositor_comments
'Adding full bibliography for 7125621--7125624.cif.'
_cod_database_code               7125623
_shelx_shelxl_version_number     2014/7
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 0.9(17)
 0.1(17)
2. Fixed Uiso
 At 1.2 times of:
  All N(H,H) groups
3.a X=CH2 refined with riding coordinates:
 N5(H5A,H5B)
;
_olex2_submission_special_instructions 'No special instructions were received'