Low-frequency lattice vibrations from atomic displacement parameters of α-FOX-7, a high energy density material
Aree, Thammarat; McMonagle, Charles J.; Michalchuk, Adam A. L.; Chernyshov, Dmitry; Acta Crystallographica Section B 78 (2022) –; doi:10.1107/S2052520622002700

data_2108974
_publ_section_title
;
 Low-frequency lattice vibrations from atomic displacement parameters of
 \a-FOX-7, a high energy density material
;
_journal_coeditor_code           WU5002
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S2052520622002700
_journal_volume                  78
_journal_year                    2022
_chemical_formula_moiety         'C2 H4 N4 O4'
_chemical_formula_sum            'C2 H4 N4 O4'
_chemical_formula_weight         148.079
_chemical_name_systematic        1,1-Diamino-2,2-dinitroethylene
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_primary     notdet
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6408)
;
_cell_angle_alpha                90
_cell_angle_beta                 90.5886(16)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.93500(10)
_cell_length_b                   6.61900(10)
_cell_length_c                   11.3172(2)
_cell_measurement_reflns_used    1144
_cell_measurement_temperature    280
_cell_measurement_theta_max      32.2390
_cell_measurement_theta_min      3.3340
_cell_volume                     519.463(14)
_computing_cell_refinement
;
CrysAlisPro 1.171.40.67a (Rigaku OD, 2019)
;
_computing_data_collection
;
CrysAlisPro 1.171.40.67a (Rigaku OD, 2019)
;
_computing_data_reduction
;
CrysAlisPro 1.171.40.67a (Rigaku OD, 2019)
;
_computing_molecular_graphics
;
Olex2 1.3 (Dolomanov <i>et al.</i>,  2009)
;
_computing_publication_material
;
Olex2 1.3 (Dolomanov <i>et al.</i>,  2009)
;
_computing_structure_refinement
;
olex2.refine 1.3 (Bourhis <i>et al.</i>,  2015)
;
_diffrn_ambient_temperature      280.0
_diffrn_detector                 'Hybrid Pixel Array Detector'
_diffrn_detector_area_resol_mean 5.8140
_diffrn_measured_fraction_theta_full 0.9021
_diffrn_measured_fraction_theta_max 0.6701
_diffrn_measurement_device       'one-circle diffractometer'
_diffrn_measurement_device_type  'BM01 ESRF 2M 20210501'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  'silicon 111'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.66418
_diffrn_reflns_av_R_equivalents  0.0334
_diffrn_reflns_av_unetI/netI     0.0438
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            4928
_diffrn_reflns_theta_full        23.4849
_diffrn_reflns_theta_max         32.73
_diffrn_reflns_theta_min         3.23
_diffrn_source
;
European Synchrotron Radiation Facility (ESRF), BM01 - The Swiss-Norwegian
Beamlines
;
_exptl_absorpt_coefficient_mu    0.152
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.73422
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.40.67a (Rigaku OD, 2019)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear yellow'
_exptl_crystal_density_diffrn    1.893
_exptl_crystal_description       block
_exptl_crystal_F_000             304.164
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.4863
_refine_diff_density_min         -0.3178
_refine_ls_goodness_of_fit_ref   1.0455
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     127
_refine_ls_number_reflns         1576
_refine_ls_number_restraints     93
_refine_ls_restrained_S_all      1.0135
_refine_ls_R_factor_all          0.0696
_refine_ls_R_factor_gt           0.0574
_refine_ls_shift/su_max          0.0001
_refine_ls_shift/su_mean         0.0000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1274P)^2^+0.0555P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1682
_refine_ls_wR_factor_ref         0.1874
_reflns_number_gt                1222
_reflns_number_total             1576
_reflns_threshold_expression     I>=2u(I)
_cod_data_source_file            wu5002sup1.cif
_cod_data_source_block           280
_cod_database_code               2108974