TAAM: a reliable and user friendly tool for hydrogen-atom location using routine X-ray diffraction data
Jha, Kunal Kumar; Gruza, Barbara; Kumar, Prashant; Chodkiewicz, Michal Leszek; Dominiak, Paulina Maria; Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 76 (2020) –; doi:10.1107/S2052520620002917

data_2022025
_publ_section_title
;
 TAAM: a reliable and user friendly tool for hydrogen-atom location using
 routine X-ray diffraction data
;
_journal_issue                   3
_journal_name_full
'Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials'
_journal_paper_doi               10.1107/S2052520620002917
_journal_volume                  76
_journal_year                    2020
_chemical_absolute_configuration unk
_chemical_formula_moiety         '2(C0.5 H2 N O0.5)'
_chemical_formula_sum            'C H4 N2 O'
_chemical_formula_weight         60.06
_space_group_crystal_system      tetragonal
_space_group_IT_number           113
_space_group_name_Hall           'P -4 2ab'
_space_group_name_H-M_alt        'P -4 21 m'
_symmetry_Int_Tables_number      113
_audit_creation_date             2019-09-27
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.5780(6)
_cell_length_b                   5.5780(6)
_cell_length_c                   4.6860(7)
_cell_measurement_temperature    123(2)
_cell_volume                     145.80(3)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'olex2.refine (Bourhis et al., 2015)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.9817
_diffrn_measured_fraction_theta_max 0.9817
_diffrn_measurement_device_type  'KM6-CH six-circle \k diffractometer'
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.59960(10)
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_unetI/netI     0.0153
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            1045
_diffrn_reflns_theta_full        86.9732
_diffrn_reflns_theta_max         86.97
_diffrn_reflns_theta_min         4.35
_exptl_absorpt_coefficient_mu    0.118
_exptl_crystal_density_diffrn    1.3679
_exptl_crystal_F_000             64.0315
_refine_diff_density_max         0.2410
_refine_diff_density_min         -0.3173
_refine_diff_density_rms         0.0399
_refine_ls_d_res_high            0.3559
_refine_ls_d_res_low             4.6860
_refine_ls_goodness_of_fit_ref   0.6809
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     19
_refine_ls_number_reflns         1022
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.6809
_refine_ls_R_factor_all          0.0276
_refine_ls_R_factor_gt           0.0171
_refine_ls_shift/su_max          0.0004
_refine_ls_shift/su_mean         0.0001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0309P)^2^+0.0030P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0445
_refine_ls_wR_factor_ref         0.0446
_reflns_Friedel_coverage         0.0
_reflns_limit_h_max              15
_reflns_limit_h_min              0
_reflns_limit_k_max              10
_reflns_limit_k_min              0
_reflns_limit_l_max              13
_reflns_limit_l_min              0
_reflns_number_gt                803
_reflns_number_total             1022
_reflns_threshold_expression     I>=2u(I)
_cod_data_source_file            80_TAAM_ANIS_max.cif
_cod_data_source_block           80_TAAM_ANIS_max
_cod_original_sg_symbol_Hall     ' P -4 2ab'
_cod_database_code               2022025
_olex2_refinement_description
;
1. Others
 Fixed U13: O1(0) C4(0)
 Fixed U23: O1(0) C4(0)
 Fixed X: O1(0) C4(0)
 Fixed Y: O1(0.5) C4(0.5)
;
_olex2_submission_special_instructions 'No special instructions were received'