Phenanthrenes/dihydrophenanthrenes: the selectivity controlled by different benzynes and allenes.
Yao, Liangliang; Fang, Bo; Hu, Qiong; Lei, Yu; Bao, Li; Hu, Yimin; Chemical communications (Cambridge, England) 56 (2020) 15185–15188; doi:10.1039/d0cc06300b

data_7127517
_publ_section_title
;
 Phenanthrenes/dihydrophenanthrenes: the selectivity controlled by
 different benzynes and allenes.
;
_journal_issue                   96
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              15185
_journal_page_last               15188
_journal_paper_doi               10.1039/d0cc06300b
_journal_volume                  56
_journal_year                    2020
_chemical_formula_sum            'C19 H18 O3'
_chemical_formula_weight         294.33
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_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/1
_audit_update_record
;
2019-11-19 deposited with the CCDC.	2020-11-10 downloaded from the CCDC.
;
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_cell_angle_gamma                90
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_cell_measurement_theta_min      2.33
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_computing_structure_solution    'SHELXT 2014/4 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_av_R_equivalents  0.0212
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_diffrn_reflns_Laue_measured_fraction_full 0.999
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_diffrn_reflns_theta_max         27.500
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_exptl_absorpt_coefficient_mu    0.088
_exptl_crystal_colour            colorless
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_exptl_crystal_size_max          0.240
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_exptl_crystal_size_min          0.210
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_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/1 (Sheldrick 2018)'
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_refine_ls_R_factor_all          0.0529
_refine_ls_R_factor_gt           0.0421
_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^)+(0.0709P)^2^+0.2424P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1205
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_reflns_number_total             3403
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_cod_data_source_block           190710a_0m_a
_cod_original_sg_symbol_H-M      'P 21/n'
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