1,2,4,5-Benzenetetracarboxylic acid: a versatile hydrogen bonding template for controlling the regioselective topochemical synthesis of head-to-tail photodimers from stilbazole derivatives.
Ortega, Gabriela; Hernández, Jesús; González, Teresa; Dorta, Romano; Briceño, Alexander; Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 17 (2018) 670–680; doi:10.1039/c7pp00448f

data_1549323
_publ_section_title
;
 1,2,4,5-Benzenetetracarboxylic acid: a versatile hydrogen bonding
 template for controlling the regioselective topochemical synthesis of
 head-to-tail photodimers from stilbazole derivatives.
;
_journal_issue                   5
_journal_name_full
'Photochemical &amp; photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology'
_journal_page_first              670
_journal_page_last               680
_journal_paper_doi               10.1039/c7pp00448f
_journal_volume                  17
_journal_year                    2018
_chemical_compound_source        Synthesis
_chemical_formula_moiety         'C36 H26 Br2 N2 O8'
_chemical_formula_sum            'C36 H26 Br2 N2 O8'
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_space_group_name_Hall           '-P 1'
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_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
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_audit_creation_date             '12 January 2016'
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-04-17 deposited with the CCDC.
2018-04-17 downloaded from the CCDC.
;
_cell_angle_alpha                113.45(3)
_cell_angle_beta                 99.10(3)
_cell_angle_gamma                101.00(3)
_cell_formula_units_Z            1
_cell_length_a                   7.4131(15)
_cell_length_b                   10.094(2)
_cell_length_c                   12.181(2)
_cell_measurement_reflns_used    2018
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      27.9123
_cell_measurement_theta_min      1.8872
_cell_volume                     792.6(4)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC Inc., 2005)'
_computing_data_collection       'CrystalClear (Rigaku/MSC Inc., 2005)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC Inc., 2005)'
_computing_molecular_graphics
;
SHELXLTL-NT V5.1 (Bruker AXS, 1998) and DIAMOND 
(Brandenburg, 1998)
;
_computing_publication_material
; 
SHELXLTL-NT V5.1 (Bruker AXS, 1998) and PLATON (Spek, 2003).
;
_computing_structure_refinement  'SHELXL-2003 (Sheldrick, 2003)''
_computing_structure_solution    'SHELXLTL-NT V5.1 (Bruker AXS, 1998)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.765
_diffrn_measurement_device       'Mercury (2x2 bin mode)'
_diffrn_measurement_device_type  'Rigaku AFC7S Mercury'
_diffrn_measurement_method       '\w '
_diffrn_radiation_detector       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0437
_diffrn_reflns_av_sigmaI/netI    0.0604
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
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_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            8668
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.24
_diffrn_reflns_theta_min         1.89
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.615
_exptl_absorpt_correction_T_max  0.458
_exptl_absorpt_correction_T_min  0.418
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.622
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             390
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.395
_refine_diff_density_min         -0.712
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         2999
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0651
_refine_ls_R_factor_gt           0.0428
_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^)+(0.0555P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1024
_refine_ls_wR_factor_ref         0.1193
_reflns_number_gt                2160
_reflns_number_total             2999
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7pp00448f2.cif
_cod_data_source_block           p-1_CCDC2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi Scan' changed to
'multi-scan' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 1549321--1549331.cif.
;
_cod_original_cell_volume        792.6(3)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1549323