Adjacent N→O and C‒NH2 groups — a highly efficient amphoteric structure for energetic materials resulting from tautomerization proved by crystal engineering
Feng, Zhicun; Zhang, Yu; Li, Yanan; Xu, Kangzhen; CrystEngComm 23 (2021) 1544–1549; doi:10.1039/D0CE01427C

data_7242141
_publ_section_title
;
 Adjacent N\\rightarrow O and C--NH2 groups --- a highly efficient
 amphoteric structure for energetic materials resulting from
 tautomerization proved by crystal engineering
;
_journal_issue                   7
_journal_name_full               CrystEngComm
_journal_page_first              1544
_journal_page_last               1549
_journal_paper_doi               10.1039/D0CE01427C
_journal_volume                  23
_journal_year                    2021
_chemical_formula_sum            'C6 H18 K2 N10 O11'
_chemical_formula_weight         484.50
_chemical_name_systematic
'potassium 4,6-diamino-3-oxido-2-oxo-2,3-dihydro-1,3,5-triazine-1-oxide . 2.5H2O'
_space_group_crystal_system      orthorhombic
_space_group_IT_number           57
_space_group_name_Hall           '-P 2c 2b'
_space_group_name_H-M_alt        'P b c m'
_atom_sites_solution_hydrogens   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2020-11-10 deposited with the CCDC.	2021-01-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.2305(9)
_cell_length_b                   7.0126(7)
_cell_length_c                   27.175(2)
_cell_measurement_reflns_used    324
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      28.253
_cell_measurement_theta_min      2.206
_cell_volume                     1759.0(3)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Bruker Smart Apex 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  0.0281
_diffrn_reflns_av_unetI/netI     0.0236
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.983
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            10225
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.983
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.253
_diffrn_reflns_theta_min         2.206
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.622
_exptl_absorpt_correction_T_max  0.883
_exptl_absorpt_correction_T_min  0.861
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.829
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1000
_exptl_crystal_size_max          0.240
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.311
_refine_diff_density_min         -0.996
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         2196
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.0525
_refine_ls_R_factor_gt           0.0423
_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^)+(0.0873P)^2^+0.3058P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1287
_refine_ls_wR_factor_ref         0.1360
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1766
_reflns_number_total             2196
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0ce01427c2.cif
_cod_data_source_block           1_a_pl
_cod_depositor_comments
'Adding full bibliography for 7242134--7242143.cif.'
_cod_database_code               7242141
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.865
_shelx_estimated_absorpt_t_max   0.886
_shelx_res_checksum              56311