From tetrabenzoheptafulvalene to sp2 carbon nano-rings
Cheung, Kwan Yin; Yang, Shuaijun; Miao, Qian; Organic Chemistry Frontiers 4 (2017) 699–; doi:10.1039/C6QO00828C

data_1553631
_publ_section_title
;
 From tetrabenzoheptafulvalene to sp2 carbon nano-rings
;
_journal_issue                   5
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              699
_journal_paper_doi               10.1039/C6QO00828C
_journal_volume                  4
_journal_year                    2017
_chemical_formula_sum            'C51 H30 Cl2'
_chemical_formula_weight         713.65
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/6
_audit_update_record
;
2016-12-19 deposited with the CCDC.
2017-01-13 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 111.7594(9)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.2233(2)
_cell_length_b                   20.4397(3)
_cell_length_c                   15.6120(2)
_cell_measurement_reflns_used    181
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      15
_cell_volume                     3622.59(9)
_computing_cell_refinement       'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_computing_data_collection       'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_computing_data_reduction        'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_computing_molecular_graphics    'BRUKER SHELXTL'
_computing_publication_material  'BRUKER SHELXTL'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_diffrn_measurement_method       'PHI & OMEGA SCAN'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0507
_diffrn_reflns_av_unetI/netI     0.0263
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       14
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_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            56352
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.250
_diffrn_reflns_theta_min         1.722
_exptl_absorpt_coefficient_mu    0.217
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.7052
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.309
_exptl_crystal_description       block
_exptl_crystal_F_000             1480
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_refine_diff_density_max         0.644
_refine_diff_density_min         -0.571
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     478
_refine_ls_number_reflns         6561
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.007
_refine_ls_R_factor_all          0.0755
_refine_ls_R_factor_gt           0.0569
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0785P)^2^+2.9450P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1481
_refine_ls_wR_factor_ref         0.1650
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5069
_reflns_number_total             6561
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6qo00828c2.cif
_cod_data_source_block           nanoring-containing-heptagon-octagon
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1553631
_shelx_estimated_absorpt_t_min   0.918
_shelx_estimated_absorpt_t_max   0.958
_shelxl_version_number           2014/6
_shelx_res_checksum              47867
_shelx_hkl_checksum              61135