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_4517035
_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 H24 N2 O10'
_chemical_formula_weight         452.41
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
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_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                73.720(9)
_cell_angle_beta                 81.906(8)
_cell_angle_gamma                67.038(11)
_cell_formula_units_Z            1
_cell_length_a                   7.1418(8)
_cell_length_b                   7.6788(9)
_cell_length_c                   10.5822(9)
_cell_measurement_reflns_used    1276
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.1094
_cell_measurement_theta_min      2.9663
_cell_volume                     512.60(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.823
_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  0.0271
_diffrn_reflns_av_sigmaI/netI    0.1076
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
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_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         29.18
_diffrn_reflns_theta_min         2.97
_exptl_absorpt_coefficient_mu    0.119
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.84417
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.466
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       PRISM
_exptl_crystal_F_000             238
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.215
_refine_diff_density_min         -0.162
_refine_diff_density_rms         0.038
_refine_ls_extinction_coef       0.025(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
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_refine_ls_number_parameters     156
_refine_ls_number_reflns         2286
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.748
_refine_ls_R_factor_all          0.1100
_refine_ls_R_factor_gt           0.0411
_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^)+(0.0365P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0678
_refine_ls_wR_factor_ref         0.0768
_reflns_number_gt                1147
_reflns_number_total             2286
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1-2-3abc-4-5-6.CIF
_cod_data_source_block           1
_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_cell_volume        512.60(9)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4517035