Highly efficient cyclotrimerization of isocyanates by N- Heterocyclic Olefins under bulk condition
Li, Chengkai; Zhao, Wuchao; He, Jianghua; Zhang, Yuetao; Chemical Communications  (2019) –; doi:10.1039/C9CC06402H

data_7124222
_publ_section_title
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 Highly efficient cyclotrimerization of isocyanates by N- Heterocyclic
 Olefins under bulk condition
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/C9CC06402H
_journal_year                    2019
_chemical_formula_moiety         'C27 H26 F N3 O,C6 H5 F'
_chemical_formula_sum            'C33 H31 F2 N3 O'
_chemical_formula_weight         523.63
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2019-08-18 deposited with the CCDC.    2019-09-23 downloaded from the CCDC.
;
_cell_angle_alpha                84.556(2)
_cell_angle_beta                 73.203(2)
_cell_angle_gamma                88.712(2)
_cell_formula_units_Z            2
_cell_length_a                   10.2304(11)
_cell_length_b                   10.8156(11)
_cell_length_c                   13.0482(14)
_cell_measurement_reflns_used    2232
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      25.37
_cell_measurement_theta_min      2.38
_cell_volume                     1375.9(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SMART'
_computing_molecular_graphics    SHELXP-97
_computing_publication_material  SHELXP-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.972
_diffrn_measured_fraction_theta_max 0.972
_diffrn_measurement_device_type  MoK\a
_diffrn_measurement_method       '\f and \w scans'
_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  0.0178
_diffrn_reflns_av_sigmaI/netI    0.0459
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            7943
_diffrn_reflns_theta_full        26.38
_diffrn_reflns_theta_max         26.38
_diffrn_reflns_theta_min         1.64
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.264
_exptl_crystal_density_meas      1.264
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             452
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.545
_refine_diff_density_min         -0.324
_refine_diff_density_rms         0.078
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     356
_refine_ls_number_reflns         5475
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0832
_refine_ls_R_factor_gt           0.0574
_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^)+(0.0974P)^2^+0.3166P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1541
_refine_ls_wR_factor_ref         0.1808
_reflns_number_gt                3954
_reflns_number_total             5475
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c9cc06402h2.cif
_cod_data_source_block           a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_sg_symbol_H-M      'P-1   '
_cod_database_code               7124222