A photo-induced C–C bond formation methodology to construct tetrahydrofluorenones and their related structures
Cai, Shujun; Xiao, Zheming; Ou, Jinjie; Shi, Yingbo; Gao, Shuanhu; Organic Chemistry Frontiers 3 (2016) 354–; doi:10.1039/C5QO00392J

data_1553219
_publ_section_title
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 A photo-induced C--C bond formation methodology to construct
 tetrahydrofluorenones and their related structures
;
_journal_issue                   3
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              354
_journal_paper_doi               10.1039/C5QO00392J
_journal_volume                  3
_journal_year                    2016
_chemical_formula_sum            'C20 H28 O2 Si'
_chemical_formula_weight         328.51
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-11-20 deposited with the CCDC.
2016-01-14 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.916(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.5687(5)
_cell_length_b                   30.831(2)
_cell_length_c                   8.0907(6)
_cell_measurement_temperature    173(2)
_cell_volume                     1887.7(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0641
_diffrn_reflns_av_sigmaI/netI    0.0415
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       -36
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            21646
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.60
_exptl_absorpt_coefficient_mu    0.132
_exptl_absorpt_correction_T_max  0.9754
_exptl_absorpt_correction_T_min  0.9590
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.156
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.302
_refine_diff_density_min         -0.272
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_refine_ls_extinction_method     none
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_refine_ls_number_parameters     208
_refine_ls_number_reflns         3312
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_refine_ls_R_factor_all          0.0725
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_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0488P)^2^+1.7996P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1300
_refine_ls_wR_factor_ref         0.1403
_reflns_number_gt                2576
_reflns_number_total             3312
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5qo00392j2.cif
_cod_data_source_block           z
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        1887.8(2)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               1553219