Tetrabenzo-Chichibabin's hydrocarbons: substituent effects and unusual thermochromic and thermomagnetic behaviours.
Jiang, Chuanling; Bang, Yawen; Wang, Xinhao; Lu, Xuefeng; Lim, Zhenglong; Wei, Haipeng; El-Hankari, Samir; Wu, Jishan; Zeng, Zebing; Chemical communications (Cambridge, England) 54 (2018) 2389–2392; doi:10.1039/c8cc00378e

data_7121269
_publ_section_title
;
 Tetrabenzo-Chichibabin's hydrocarbons: substituent effects and unusual
 thermochromic and thermomagnetic behaviours.
;
_journal_issue                   19
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              2389
_journal_page_last               2392
_journal_paper_doi               10.1039/c8cc00378e
_journal_volume                  54
_journal_year                    2018
_chemical_formula_moiety         'C62 H56 N4, C7 H8'
_chemical_formula_sum            'C69 H64 N4'
_chemical_formula_weight         949.24
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2017-05-12
_audit_creation_method
;
Olex2 1.2
(compiled 2017.03.28 svn.r3405 for OlexSys, GUI svn.r5335)
;
_audit_update_record
;
2017-07-24 deposited with the CCDC.
2018-02-12 downloaded from the CCDC.
;
_cell_angle_alpha                95.630(2)
_cell_angle_beta                 96.899(2)
_cell_angle_gamma                112.346(2)
_cell_formula_units_Z            2
_cell_length_a                   12.4719(5)
_cell_length_b                   16.0534(8)
_cell_length_c                   17.5659(8)
_cell_measurement_reflns_used    5799
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      27.08
_cell_measurement_theta_min      2.37
_cell_volume                     3189.5(3)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      130.02
_diffrn_measured_fraction_theta_full 0.970
_diffrn_measured_fraction_theta_max 0.970
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1213
_diffrn_reflns_av_unetI/netI     0.1416
_diffrn_reflns_Laue_measured_fraction_full 0.970
_diffrn_reflns_Laue_measured_fraction_max 0.970
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            34349
_diffrn_reflns_point_group_measured_fraction_full 0.970
_diffrn_reflns_point_group_measured_fraction_max 0.970
_diffrn_reflns_theta_full        25.050
_diffrn_reflns_theta_max         25.050
_diffrn_reflns_theta_min         1.792
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.057
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6916
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.0778 before and 0.0333 after correction. The Ratio of minimum to maximum transmission is 0.9276. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            black
_exptl_crystal_colour_primary    black
_exptl_crystal_density_diffrn    0.988
_exptl_crystal_description       block
_exptl_crystal_F_000             1012
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.366
_refine_diff_density_min         -0.303
_refine_diff_density_rms         0.070
_refine_ls_extinction_coef       0.012(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/6 (Sheldrick 2016)'
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     668
_refine_ls_number_reflns         10947
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.1868
_refine_ls_R_factor_gt           0.1040
_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^)+(0.1586P)^2^+1.1101P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2689
_refine_ls_wR_factor_ref         0.3167
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5522
_reflns_number_total             10947
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8cc00378e2.cif
_cod_data_source_block           mo_d8v17008_0m
_cod_depositor_comments
'Adding full bibliography for 7121266--7121269.cif.'
_cod_database_code               7121269
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.997
_shelx_estimated_absorpt_t_min   0.991
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5), C9(H9), C10(H10), C11(H11), C12(H12),
 C17(H17), C18(H18), C19(H19), C20(H20), C24(H24), C25(H25), C26(H26), C27(H27),
  C31(H31), C32(H32), C34(H34), C35(H35), C39(H39), C40(H40), C42(H42),
 C43(H43), C48(H48), C49(H49), C51(H51), C52(H52), C56(H56), C57(H57), C59(H59),
  C60(H60), C63(H63), C64(H64), C65(H65), C66(H66), C67(H67)
2.b Idealised Me refined as rotating group:
 C36(H36A,H36B,H36C), C37(H37A,H37B,H37C), C44(H44A,H44B,H44C), C45(H45A,H45B,
 H45C), C53(H53A,H53B,H53C), C54(H54A,H54B,H54C), C61(H61A,H61B,H61C), C62(H62A,
 H62B,H62C), C69(H69A,H69B,H69C)
;
_shelx_res_checksum              92760
_shelx_fab_checksum              51663
_olex2_submission_special_instructions 'No special instructions were received'