Highly strained [6]cycloparaphenylene: crystallization of an unsolvated polymorph and the first mono- and dianions.
Spisak, Sarah N.; Wei, Zheng; Darzi, Evan; Jasti, Ramesh; Petrukhina, Marina A.; Chemical communications (Cambridge, England) 54 (2018) 7818–7821; doi:10.1039/c8cc03693d

data_7121882
_publ_section_title
;
 Highly strained [6]cycloparaphenylene: crystallization of an unsolvated
 polymorph and the first mono- and dianions.
;
_journal_issue                   56
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              7818
_journal_page_last               7821
_journal_paper_doi               10.1039/c8cc03693d
_journal_volume                  54
_journal_year                    2018
_chemical_formula_moiety         'C36 H24'
_chemical_formula_sum            'C36 H24'
_chemical_formula_weight         456.55
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2017/1
_audit_update_record
;
2018-05-02 deposited with the CCDC.
2018-06-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 106.3290(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   11.1772(5)
_cell_length_b                   10.3120(4)
_cell_length_c                   11.2725(5)
_cell_measurement_reflns_used    8255
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      72.09
_cell_measurement_theta_min      4.12
_cell_volume                     1246.85(9)
_computing_cell_refinement       'SAINT V.8.37A (Bruker AXS Inc., 2016)'
_computing_data_collection       'APEX3 v.2016.9-0 (Bruker AXS Inc., 2016)'
_computing_data_reduction        'SAINT V.8.37A (Bruker AXS Inc., 2016)'
_computing_molecular_graphics    'Xshell v.6.3.1 (Bruker AXS Inc., 2016)'
_computing_publication_material  'APEX3 v.2016.9-0 (Bruker AXS Inc., 2016)'
_computing_structure_refinement  'SHELXL-2017/1 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Bruker D8 Venture PHOTON 100 CMOS'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  mirrors
_diffrn_radiation_source         'INCOATEC ImuS micro-focus source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0255
_diffrn_reflns_av_unetI/netI     0.0217
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.982
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            10681
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.982
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         72.086
_diffrn_reflns_theta_min         4.121
_exptl_absorpt_coefficient_mu    0.522
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was 
used for absorption correction. 
Krause, L., Herbst-Irmer, R., 
Sheldrick G.M. & Stalke D.,
 J. Appl. Cryst. 48 (2015) 3-10
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.216
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    none
_exptl_crystal_description       block
_exptl_crystal_F_000             480
_exptl_crystal_size_max          0.220
_exptl_crystal_size_mid          0.170
_exptl_crystal_size_min          0.160
_exptl_transmission_factor_max   1
_exptl_transmission_factor_min   0.9326
_refine_diff_density_max         0.299
_refine_diff_density_min         -0.233
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         2409
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0433
_refine_ls_R_factor_gt           0.0414
_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^)+(0.0512P)^2^+0.7401P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1058
_refine_ls_wR_factor_ref         0.1076
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2278
_reflns_number_total             2409
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8cc03693d2.cif
_cod_data_source_block           1
_cod_depositor_comments
;
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 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 7121882--7121884.cif.
;
_cod_database_code               7121882
_shelx_shelxl_version_number     2017/1
_shelx_estimated_absorpt_t_min   0.894
_shelx_estimated_absorpt_t_max   0.921
_shelx_res_checksum              66941