Co-Crystals and Salts Obtained from Dinitrogen Bases and 1,2,3,4-Cyclobutane Tetracarboxylic Acid and the Use of the Latter As a Template for Solid-State Photocyclization Reactions
Braga, Dario; d’Agostino, Simone; Grepioni, Fabrizia; Crystal Growth & Design 12 (2012) 4880–; doi:10.1021/cg300716q

data_4517039
_publ_section_title
;
 Co-Crystals and Salts Obtained from Dinitrogen Bases and
 1,2,3,4-Cyclobutane Tetracarboxylic Acid and the Use of the Latter As a
 Template for Solid-State Photocyclization Reactions
;
_journal_issue                   10
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              4880
_journal_paper_doi               10.1021/cg300716q
_journal_volume                  12
_journal_year                    2012
_chemical_formula_sum            'C20 H22 N2 O10'
_chemical_formula_weight         450.40
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                85.770(1)
_cell_angle_beta                 89.028(2)
_cell_angle_gamma                84.406(1)
_cell_formula_units_Z            2
_cell_length_a                   8.3100(2)
_cell_length_b                   8.5610(2)
_cell_length_c                   13.7690(4)
_cell_measurement_temperature    293(2)
_cell_volume                     972.19(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.915
_diffrn_measured_fraction_theta_max 0.915
_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  0.0330
_diffrn_reflns_av_sigmaI/netI    0.1873
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            5718
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.46
_exptl_absorpt_coefficient_mu    0.125
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.539
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             472
_exptl_crystal_size_max          0.01
_exptl_crystal_size_mid          0.002
_exptl_crystal_size_min          0.001
_refine_diff_density_max         0.377
_refine_diff_density_min         -0.372
_refine_diff_density_rms         0.064
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.805
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     199
_refine_ls_number_reflns         3131
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.805
_refine_ls_R_factor_all          0.1917
_refine_ls_R_factor_gt           0.0767
_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^)+(0.1201P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1888
_refine_ls_wR_factor_ref         0.2220
_reflns_number_gt                1092
_reflns_number_total             3131
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1-2-3abc-4-5-6.CIF
_cod_data_source_block           3c
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Triclinic' was changed to
'triclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4517039