Crystal structures and phase transitions of imidazolium hypodiphosphates
Budzikur, Daria; Szklarz, Przemysław; Kinzhybalo, Vasyl; Ślepokura, Katarzyna A.; Acta Crystallographica Section B 76 (2020) –; doi:10.1107/S2052520620011439

data_2108673
_publ_section_title
;
 Crystal structures and phase transitions of imidazolium hypodiphosphates
;
_journal_coeditor_code           YB5027
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S2052520620011439
_journal_volume                  76
_journal_year                    2020
_chemical_absolute_configuration ad
_chemical_formula_moiety         '2(C3 H5 N2), (H2 O6 P2)'
_chemical_formula_sum            'C6 H12 N4 O6 P2'
_chemical_formula_weight         298.14
_space_group_crystal_system      tetragonal
_space_group_IT_number           96
_space_group_name_Hall           'P 4nw 2abw'
_space_group_name_H-M_alt        'P 43 21 2'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.966(2)
_cell_length_b                   8.966(2)
_cell_length_c                   15.462(4)
_cell_measurement_reflns_used    5341
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      28.44
_cell_measurement_theta_min      2.61
_cell_volume                     1243.0(5)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT-2014/7 (Sheldrick, 2015)'
_diffrn_ambient_temperature      110(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.3456
_diffrn_detector_type            Ruby
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.969
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Agilent Technologies, Xcalibur R'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0373
_diffrn_reflns_av_unetI/netI     0.0234
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.969
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            13584
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.957
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.762
_diffrn_reflns_theta_min         2.626
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.376
_exptl_absorpt_correction_T_max  0.983
_exptl_absorpt_correction_T_min  0.867
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)
Analytical numeric absorption correction using a multifaceted crystal
   model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.593
_exptl_crystal_description       column
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.297
_refine_diff_density_min         -0.298
_refine_diff_density_rms         0.048
_refine_ls_abs_structure_details
;
 Flack x determined using 519 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.03(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     94
_refine_ls_number_reflns         1550
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.0326
_refine_ls_R_factor_gt           0.0284
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0313P)^2^+0.3895P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0631
_refine_ls_wR_factor_ref         0.0646
_reflns_Friedel_coverage         0.601
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.937
_reflns_number_gt                1444
_reflns_number_total             1550
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            yb5027sup1.cif
_cod_data_source_block           II
_cod_original_cell_volume        1243.0(6)
_cod_database_code               2108673
_cod_database_fobs_code          2108673
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.858
_shelx_estimated_absorpt_t_max   0.981
_shelx_res_checksum              35574
_shelx_hkl_checksum              30395