Hydrogen-Bond-Induced Selectivity of a Head-to-Head Photo- Dimerization of Dialkynylanthracene ‒ Access to Tetra Lewis Acids
Niermeier, Philipp; Maibom, Kristina; Lamm, Jan-Hendrik; Neumann, Beate; Stammler, Georg; Mitzel, Norbert Werner; Chemical Science  (2021) –; doi:10.1039/D1SC02065J

data_1562392
_publ_section_title
;
 Hydrogen-Bond-Induced Selectivity of a Head-to-Head Photo- Dimerization
 of Dialkynylanthracene -- Access to Tetra Lewis Acids
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/D1SC02065J
_journal_year                    2021
_chemical_formula_moiety         '2(C18 H10), 0.5(C7 H8)'
_chemical_formula_sum            'C39.5 H24'
_chemical_formula_weight         498.59
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2019-08-19
_audit_creation_method
;
Olex2 1.3-dev
(compiled 2019.03.18 svn.r3573 for OlexSys, GUI svn.r5894)
;
_audit_update_record
;
2019-09-09 deposited with the CCDC.	2021-05-06 downloaded from the CCDC.
;
_cell_angle_alpha                104.246(4)
_cell_angle_beta                 90.620(5)
_cell_angle_gamma                111.016(5)
_cell_formula_units_Z            2
_cell_length_a                   10.1399(8)
_cell_length_b                   11.8036(11)
_cell_length_c                   12.2024(11)
_cell_measurement_reflns_used    34511
_cell_measurement_temperature    100.0(1)
_cell_measurement_theta_max      30.034
_cell_measurement_theta_min      2.910
_cell_volume                     1313.5(2)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect, Bruker AXS, 2004'
_computing_data_reduction
'Denzo and Scalepack (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'Olex2 1.3-dev (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3-dev (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100.0(1)
_diffrn_measured_fraction_theta_full 0.974
_diffrn_measured_fraction_theta_max 0.947
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.061
_diffrn_reflns_av_unetI/netI     0.0706
_diffrn_reflns_Laue_measured_fraction_full 0.974
_diffrn_reflns_Laue_measured_fraction_max 0.947
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            18989
_diffrn_reflns_point_group_measured_fraction_full 0.974
_diffrn_reflns_point_group_measured_fraction_max 0.947
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.998
_diffrn_reflns_theta_min         3.039
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  0.9986
_exptl_absorpt_correction_T_min  0.9789
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo and Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.261
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             522
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.328
_refine_diff_density_min         -0.254
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     389
_refine_ls_number_reflns         7266
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.1116
_refine_ls_R_factor_gt           0.0624
_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^)+(0.0613P)^2^+0.6144P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1315
_refine_ls_wR_factor_ref         0.1564
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4680
_reflns_number_total             7266
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1sc02065j2.cif
_cod_data_source_block           Anti-2
_cod_original_formula_sum        'C39.50 H24'
_cod_database_code               1562392
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.999
_shelx_estimated_absorpt_t_min   0.979
_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. Others
 Fixed Sof: C37(0.5) H37(0.5) C38(0.5) H38(0.5) C39(0.5) H39(0.5) C40(0.5)
 H40(0.5) C41(0.5) H41(0.5) C42(0.5) C43(0.5) H43A(0.5) H43B(0.5) H43C(0.5)
3.a Ternary CH refined with riding coordinates:
 C3(H3), C10(H10), C21(H21), C28(H28)
3.b Aromatic/amide H refined with riding coordinates:
 C6(H6), C7(H7), C8(H8), C12(H12), C13(H13), C14(H14), C24(H24), C25(H25),
 C26(H26), C30(H30), C31(H31), C32(H32), C37(H37), C38(H38), C39(H39), C40(H40),
  C41(H41)
3.c Idealised Me refined as rotating group:
 C43(H43A,H43B,H43C)
3.d :
 C16(H16), C18(H18), C34(H34), C36(H36)
;
_shelx_res_checksum              92552
_shelx_hkl_checksum              15198
_olex2_submission_special_instructions 'No special instructions were received'