Regioselective Synthesis of [3]Naphthylenes and Tuning of Their Antiaromaticity.
Jin, Zexin; Teo, Yew Chin; Teat, Simon J.; Xia, Yan; Journal of the American Chemical Society 139 (2017) 15933–15939; doi:10.1021/jacs.7b09222

data_4131721
_publ_section_title
;
 Regioselective Synthesis of [3]Naphthylenes and Tuning of Their
 Antiaromaticity.
;
_journal_issue                   44
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15933
_journal_page_last               15939
_journal_paper_doi               10.1021/jacs.7b09222
_journal_volume                  139
_journal_year                    2017
_chemical_formula_sum            'C34 H24'
_chemical_formula_weight         432.53
_space_group_crystal_system      monoclinic
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_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     'Dual space'
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 116.4960(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   19.9832(8)
_cell_length_b                   5.5314(2)
_cell_length_c                   22.3395(12)
_cell_measurement_reflns_used    9750
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      35.3337
_cell_measurement_theta_min      2.9899
_cell_volume                     2209.94(17)
_computing_cell_refinement       'Bruker SAINT v8.38a'
_computing_data_collection       'Bruker APEX 3'
_computing_data_reduction        'Bruker SAINT v8.38a'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL & local programs'
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_computing_structure_solution    'Bruker SHELXTL 2014/5'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 7.39
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker D8 with PHOTONII detector'
_diffrn_measurement_method       '\w/\q shutterless scans'
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.7749
_diffrn_reflns_av_R_equivalents  0.0513
_diffrn_reflns_av_unetI/netI     0.0393
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            35889
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.993
_diffrn_reflns_theta_full        27.706
_diffrn_reflns_theta_max         35.387
_diffrn_reflns_theta_min         2.004
_diffrn_source                   'Advanced Light Source Beamline 11.3.1'
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.998
_exptl_absorpt_correction_T_min  0.850
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2016/2 Bruker AXS Madison WI USA'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.300
_exptl_crystal_description       needle
_exptl_crystal_F_000             912
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.040
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.485
_refine_diff_density_min         -0.234
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     311
_refine_ls_number_reflns         7673
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0605
_refine_ls_R_factor_gt           0.0467
_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^)+(0.0702P)^2^+0.5611P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1295
_refine_ls_wR_factor_ref         0.1414
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6008
_reflns_number_total             7673
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b09222_si_005.cif
_cod_data_source_block           zexin_5_68_a
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4131721
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.966
_shelx_estimated_absorpt_t_max   0.998
_shelx_res_checksum              67137
_shelx_hkl_checksum              21174