Crystal engineering studies on the salts of trans-4,4′-stilbenedicarboxylic acid in the context of solid state [2 + 2] cycloaddition reaction
Kole, Goutam Kumar; Tan, Geok Kheng; Vittal, Jagadese J.; CrystEngComm 13 (2011) 3138–; doi:10.1039/c0ce00224k

data_7205588
_publ_section_title
;
 Crystal engineering studies on the salts of
 trans-4,4&#x2032;-stilbenedicarboxylic acid in the context of solid
 state [2 + 2] cycloaddition reaction
;
_journal_issue                   9
_journal_name_full               CrystEngComm
_journal_page_first              3138
_journal_paper_doi               10.1039/c0ce00224k
_journal_volume                  13
_journal_year                    2011
_chemical_formula_sum            'C26 H30 N4 O6'
_chemical_formula_weight         494.54
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_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                 101.6510(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.5009(6)
_cell_length_b                   10.6106(7)
_cell_length_c                   13.7800(9)
_cell_measurement_reflns_used    3735
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.47
_cell_measurement_theta_min      2.60
_cell_volume                     1217.34(14)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0221
_diffrn_reflns_av_sigmaI/netI    0.0236
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            8398
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.44
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_T_max  0.9476
_exptl_absorpt_correction_T_min  0.9091
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2005)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.349
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             524
_exptl_crystal_size_max          1.00
_exptl_crystal_size_mid          0.70
_exptl_crystal_size_min          0.56
_refine_diff_density_max         0.391
_refine_diff_density_min         -0.479
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     191
_refine_ls_number_reflns         2783
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0610
_refine_ls_R_factor_gt           0.0547
_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^)+(0.0981P)^2^+0.3825P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1652
_refine_ls_wR_factor_ref         0.1709
_reflns_number_gt                2386
_reflns_number_total             2783
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0ce00224k.txt
_cod_data_source_block           compound_7
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed
to 'multi-scan' 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 1555 2011-01-17 13:19:09Z saulius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'Not Measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7205588