5,6-Di(2-fluoro-2,2-dinitroethoxy)furazano[3,4-b]pyrazine: a high performance melt-cast energetic material and its polycrystalline properties
Ma, Qing; Lu, Zhipeng; Liao, Longyu; Huang, Jinglun; Liu, Dabin; Li, Jinshan; Fan, Guijuan; RSC Adv. 7 (2017) 38844–; doi:10.1039/C7RA07035G

data_7228895
_publ_section_title
;
 5,6-Di(2-fluoro-2,2-dinitroethoxy)furazano[3,4-b]pyrazine: a high
 performance melt-cast energetic material and its polycrystalline
 properties
;
_journal_issue                   62
_journal_name_full               'RSC Adv.'
_journal_page_first              38844
_journal_paper_doi               10.1039/C7RA07035G
_journal_volume                  7
_journal_year                    2017
_chemical_absolute_configuration unk
_chemical_formula_sum            'C8 H4 F2 N8 O11'
_chemical_formula_weight         426.19
_chemical_name_systematic
; 
 ? 
;
_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'
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2017-02-28 deposited with the CCDC.
2017-08-09 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.0371(13)
_cell_length_b                   13.1237(16)
_cell_length_c                   10.6684(12)
_cell_measurement_reflns_used    1837
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      41.697
_cell_measurement_theta_min      4.822
_cell_volume                     1545.3(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.972
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0407
_diffrn_reflns_av_unetI/netI     0.0398
_diffrn_reflns_Laue_measured_fraction_full 0.972
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            7951
_diffrn_reflns_point_group_measured_fraction_full 0.846
_diffrn_reflns_point_group_measured_fraction_max 0.871
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         24.992
_diffrn_reflns_theta_min         1.552
_exptl_absorpt_coefficient_mu    0.184
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6542
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.832
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.170
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.916
_refine_diff_density_min         -0.241
_refine_diff_density_rms         0.062
_refine_ls_abs_structure_details
; 
 Flack x determined using 703 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons and Flack (2004), Acta Cryst. A60, s61). 
;
_refine_ls_abs_structure_Flack   -0.1(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         2370
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0674
_refine_ls_R_factor_gt           0.0615
_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^)+(0.0841P)^2^+1.1807P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1542
_refine_ls_wR_factor_ref         0.1593
_reflns_Friedel_coverage         0.640
_reflns_Friedel_fraction_full    0.704
_reflns_Friedel_fraction_max     0.725
_reflns_number_gt                2118
_reflns_number_total             2370
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ra07035g2.cif
_cod_data_source_block           cd17027
_cod_database_code               7228895
_shelx_estimated_absorpt_t_min   0.964
_shelx_estimated_absorpt_t_max   0.982
_shelxl_version_number           2013-4
_shelx_res_checksum              14174