Small cavitand macrocycles from direct C-C coupling of <i>s</i>-aryl tetrazine units.
Mboyi, Clève D; Sabbadin, Henri; Penouilh, Marie-José; Bonnin, Quentin; Amardeil, Régine; Cattey, Hélène; Fournier, Sophie; Devillers, Charles H.; Roger, Julien; Hierso, Jean-Cyrille; Chemical communications (Cambridge, England) 62 (2026) 6987–6991; doi:10.1039/d6cc00124f

data_7135589
_publ_section_title
;
 Small cavitand macrocycles from direct C-C coupling of <i>s</i>-aryl
 tetrazine units.
;
_journal_issue                   26
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              6987
_journal_page_last               6991
_journal_paper_doi               10.1039/d6cc00124f
_journal_volume                  62
_journal_year                    2026
_chemical_formula_moiety         'C28 H16 Br2 N8'
_chemical_formula_sum            'C28 H16 Br2 N8'
_chemical_formula_weight         624.31
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6408)
;
_audit_update_record
;
2025-11-07 deposited with the CCDC.	2026-03-09 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   14.2290(4)
_cell_length_b                   12.9685(4)
_cell_length_c                   26.3149(7)
_cell_measurement_reflns_used    9997
_cell_measurement_temperature    115
_cell_measurement_theta_max      27.16
_cell_measurement_theta_min      2.63
_cell_volume                     4855.9(2)
_computing_cell_refinement       'SAINT V8.40B (Bruker, 2016)'
_computing_data_collection       'APEX3 (Bruker, 2020)'
_computing_data_reduction        'SAINT V8.40B (Bruker, 2016)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      115
_diffrn_detector                 'CCD Plate'
_diffrn_detector_area_resol_mean '512 x 512'
_diffrn_detector_type            APEX2
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       '\k-geometry diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_collimation    '0.6 mm'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_xray_symbol    K-L~3~
_diffrn_reflns_av_R_equivalents  0.0539
_diffrn_reflns_av_unetI/netI     0.0359
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            120960
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.505
_diffrn_reflns_theta_min         2.629
_diffrn_source                   'X-ray tube'
_diffrn_source_current           32.0
_diffrn_source_power             1.6
_diffrn_source_target            Mo
_diffrn_source_type              'Siemens KFF Mo 2K-180'
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.376
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5373
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0892 before and 0.0495 after correction.
The Ratio of minimum to maximum transmission is 0.7206.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear light pink'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    pink
_exptl_crystal_density_diffrn    1.708
_exptl_crystal_description       prism
_exptl_crystal_F_000             2480
_exptl_crystal_recrystallization_method
'The material was recrystallised from a mixture of DCM and heptane  by slow evaporation'
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.716
_refine_diff_density_min         -0.504
_refine_diff_density_rms         0.069
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.268(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     686
_refine_ls_number_reflns         11131
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0467
_refine_ls_R_factor_gt           0.0294
_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^)+(0.0254P)^2^+2.6760P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0548
_refine_ls_wR_factor_ref         0.0596
_reflns_Friedel_coverage         0.956
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.998
_reflns_number_gt                9206
_reflns_number_total             11131
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d6cc00124f2.cif
_cod_data_source_block           Compound_4a
_cod_depositor_comments
'Adding full bibliography for 7135589--7135593.cif.'
_cod_database_code               7135589
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.631
_shelx_estimated_absorpt_t_min   0.431
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 0.732(7)
 0.268(7)
2. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
3.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5), C10(H10), C11(H11), C12(H12), C13(H13),
 C16(H16), C17(H17), C18(H18), C19(H19), C25(H25), C26(H26), C27(H27), C28(H28),
  C30(H30), C31(H31), C32(H32), C33(H33), C38(H38), C39(H39), C40(H40),
 C41(H41), C44(H44), C45(H45), C46(H46), C47(H47), C53(H53), C54(H54), C55(H55),
  C56(H56)
;
_shelx_res_checksum              98770
_shelx_hkl_checksum              59194
_olex2_diffrn_ambient_temperature_device 'Oxford Cryosystems'
_olex2_exptl_crystal_mounting_method
'The crystal was mounted on a mylar loop with oil'
_olex2_submission_special_instructions 'No special instructions were received'