Crystal structure of 4-dimethylamino-pyridin-1-ium uracil-1-acetate, C13H16N4O4
Zhang, Xiao; Wang, Lin; Liang, Sen; Zeitschrift für Kristallographie - New Crystal Structures 235 (2020) 385–386; doi:10.1515/ncrs-2019-0687

data_8105115
_publ_section_title
;
 Crystal structure of 4-dimethylamino-pyridin-1-ium uracil-1-acetate,
 C13H16N4O4
;
_journal_issue                   2
_journal_name_full
'Zeitschrift f\"ur Kristallographie - New Crystal Structures'
_journal_page_first              385
_journal_page_last               386
_journal_paper_doi               10.1515/ncrs-2019-0687
_journal_volume                  235
_journal_year                    2020
_chemical_formula_sum            'C13 H16 N4 O4'
_chemical_formula_weight         292.30
_chemical_name_common            DMAPH+.UAA-
_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_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90.292(8)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   4.7965(12)
_cell_length_b                   10.053(2)
_cell_length_c                   27.570(6)
_cell_measurement_reflns_used    6507
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      27.34
_cell_measurement_theta_min      2.51
_cell_volume                     1329.4(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXL or DIAMOND'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.992
_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  0.0561
_diffrn_reflns_av_unetI/netI     0.0411
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            13851
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.485
_diffrn_reflns_theta_min         2.955
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.33c (Rigaku Oxford Diffraction, 2017)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.460
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.120
_exptl_transmission_factor_max   0.9807
_exptl_transmission_factor_min   0.980
_refine_diff_density_max         0.415
_refine_diff_density_min         -0.268
_refine_diff_density_rms         0.048
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     192
_refine_ls_number_reflns         3027
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.061
_refine_ls_R_factor_all          0.0523
_refine_ls_R_factor_gt           0.0426
_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^)+(0.0457P)^2^+0.4515P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1042
_refine_ls_wR_factor_ref         0.1115
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                2528
_reflns_number_total             3027
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            suppl_ncrs-2019-0687_suppl.cif
_cod_data_source_block           P
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 8738 2021-04-28 16:35:53Z antanas 
;
_cod_original_cell_volume        1329.3(5)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               8105115
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.980
_shelx_estimated_absorpt_t_max   0.987