Dibenzoberylloles: antiaromatic s-block fluorene analogues
Tröster, Tobias; Endres, Franziska; Arrowsmith, Merle; Endres, Lukas; Fantuzzi, Felipe; Braunschweig, Holger; Chemical Communications  (2023) –; doi:10.1039/D3CC02736H

data_7131770
_publ_section_title
;
 Dibenzoberylloles: antiaromatic s-block fluorene analogues
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/D3CC02736H
_journal_year                    2023
_chemical_formula_moiety         'C20 H24 Be O2'
_chemical_formula_sum            'C20 H24 Be O2'
_chemical_formula_weight         305.40
_chemical_properties_physical    Air-sensitive,Moisture-sensitive
_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
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           'CIF-fill 1.2l (K.Radacki 2005-20)'
_audit_update_record
;
2023-03-31 deposited with the CCDC.	2023-06-28 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.3000(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.0692(2)
_cell_length_b                   11.8599(3)
_cell_length_c                   17.4163(4)
_cell_measurement_reflns_used    9602
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.67
_cell_measurement_theta_min      2.64
_cell_volume                     1644.83(7)
_computing_cell_refinement       'Saint+ ver. V8.40A (Bruker AXS)'
_computing_data_collection       'BIS 6.2.14 / APEX3 ver. 2018.1 (Bruker AXS)'
_computing_data_reduction        'Saint+ ver. V8.40A (Bruker AXS)'
_computing_molecular_graphics    'ShelXLe (Huebschle et all, 2011)'
_computing_publication_material  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT (Sheldrick, 2014)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CMOS area detector (Photon II)'
_diffrn_detector_area_resol_mean 7.5
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker D8-Quest'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'multi-layer mirror'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0700
_diffrn_reflns_av_unetI/netI     0.0420
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            24102
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.737
_diffrn_reflns_theta_min         2.086
_diffrn_source                   'microfocus sealed tube (Incoatec ImS)'
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  0.7453
_exptl_absorpt_correction_T_min  0.5189
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SadAbs 2016/2 (Bruker AXS)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.233
_exptl_crystal_description       block
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.746
_exptl_crystal_size_mid          0.417
_exptl_crystal_size_min          0.254
_refine_diff_density_max         0.353
_refine_diff_density_min         -0.258
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     347
_refine_ls_number_reflns         3141
_refine_ls_number_restraints     667
_refine_ls_restrained_S_all      0.985
_refine_ls_R_factor_all          0.0563
_refine_ls_R_factor_gt           0.0494
_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^)+(0.0777P)^2^+0.6581P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1356
_refine_ls_wR_factor_ref         0.1435
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2716
_reflns_number_total             3141
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3cc02736h2.cif
_cod_data_source_block           test_a
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7131770
_shelx_shelxl_version_number     2018/3
_shelx_res_checksum              21586
_shelx_hkl_checksum              51306