Imaging proton migration from X-rays and neutrons
Andrew Parkin; Suzanne M. Harte; Andrés E. Goeta; Chick C. Wilson; New J. Chem. 28 (2004) 718–721; doi:10.1039/b315515c

data_7050270
_publ_section_title
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 Imaging proton migration from X-rays and neutrons
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_journal_issue                   6
_journal_name_full               'New J. Chem.'
_journal_page_first              718
_journal_page_last               721
_journal_paper_doi               10.1039/b315515c
_journal_volume                  28
_journal_year                    2004
_chemical_formula_moiety         'H2 O4 P, H, O C H4 N2'
_chemical_formula_sum            'C H7 N2 O5 P'
_chemical_formula_weight         158.06
_chemical_name_common            '1:1 co-crystal of urea:phosphoric acid'
_chemical_name_systematic
;
?
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     'known coordinates'
_atom_sites_solution_secondary   none
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   7.4667(3)
_cell_length_b                   8.9827(3)
_cell_length_c                   17.5438(6)
_cell_measurement_reflns_used    974
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      26.16
_cell_measurement_theta_min      10.39
_cell_volume                     1176.68(7)
_computing_cell_refinement       'SMART V5.625 (Bruker, 2000)'
_computing_data_collection       'SMART V5.625 (Bruker, 2000)'
_computing_data_reduction        'SAINT V6.02A (Bruker, 2000)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  Encifer
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'known coordinates'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker SMART-6000 CCD Diffractometer'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0161
_diffrn_reflns_av_sigmaI/netI    0.0130
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            7841
_diffrn_reflns_theta_full        30.51
_diffrn_reflns_theta_max         30.51
_diffrn_reflns_theta_min         2.32
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.427
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.784
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular shape'
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.358
_refine_diff_density_min         -0.418
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     106
_refine_ls_number_reflns         1791
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0306
_refine_ls_R_factor_gt           0.0277
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0494P)^2^+0.3598P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0797
_refine_ls_wR_factor_ref         0.0829
_reflns_number_gt                1619
_reflns_number_total             1791
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b315515c.txt
_cod_data_source_block           200k
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7050270