Supramolecular assemblies in salts and co-crystals of imidazoles with dicarboxylic acids
Trivedi, Darshak R.; Ballabh, Amar; Dastidar, Parthasarathi; CrystEngComm 5 (2003) 358–; doi:10.1039/b309216j

data_7216276
_publ_section_title
;
 Supramolecular assemblies in salts and co-crystals of imidazoles with
 dicarboxylic acids
;
_journal_issue                   64
_journal_name_full               CrystEngComm
_journal_page_first              358
_journal_paper_doi               10.1039/b309216j
_journal_volume                  5
_journal_year                    2003
_chemical_formula_sum            'C15 H16 N2 O4'
_chemical_formula_weight         288.30
_chemical_name_common
'2-Phenyl imidazolium hydrogen cyclobutane-1,1-dicarboxylate 1'
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_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                   19.763(9)
_cell_length_b                   13.835(4)
_cell_length_c                   10.175(4)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      12
_cell_measurement_theta_min      8
_cell_volume                     2782.1(19)
_computing_cell_refinement       CAD4-PC
_computing_data_collection       CAD4-PC
_computing_data_reduction        NRCVAX
_computing_molecular_graphics    'PLATON, MERCURY 1.1.1'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.871
_diffrn_measured_fraction_theta_max 0.871
_diffrn_measurement_device_type  CAD4
_diffrn_measurement_method       'OMEGA TWO THETA'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.70930
_diffrn_reflns_av_R_equivalents  0.0390
_diffrn_reflns_av_sigmaI/netI    0.0491
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            3427
_diffrn_reflns_theta_full        22.49
_diffrn_reflns_theta_max         22.49
_diffrn_reflns_theta_min         2.06
_diffrn_standards_decay_%        NIL
_diffrn_standards_interval_time  1HR
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.101
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.377
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1216
_exptl_crystal_size_max          0.19mm
_exptl_crystal_size_mid          0.16mm
_exptl_crystal_size_min          0.11mm
_refine_diff_density_max         0.177
_refine_diff_density_min         -0.295
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.952
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     251
_refine_ls_number_reflns         1819
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.952
_refine_ls_R_factor_all          0.0773
_refine_ls_R_factor_gt           0.0438
_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^)+(0.0655P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0963
_refine_ls_wR_factor_ref         0.1069
_reflns_number_gt                1200
_reflns_number_total             1819
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b309216j.txt
_cod_data_source_block           ab0243r
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0655P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0655P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7216276