Tetrafluoropyridyl (TFP): a general phenol protecting group readily cleaved under mild conditions.
Brittain, William D. G.; Cobb, Steven L.; Organic & biomolecular chemistry 17 (2019) 2110–2115; doi:10.1039/c8ob02899k

data_7156641
_publ_section_title
;
 Tetrafluoropyridyl (TFP): a general phenol protecting group readily
 cleaved under mild conditions.
;
_journal_issue                   8
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2110
_journal_page_last               2115
_journal_paper_doi               10.1039/c8ob02899k
_journal_volume                  17
_journal_year                    2019
_chemical_formula_moiety         'C30 H12 F8 N2 O2'
_chemical_formula_sum            'C30 H12 F8 N2 O2'
_chemical_formula_weight         584.42
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_audit_creation_date             2018-06-26
_audit_creation_method
;
Olex2 1.2-beta
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2018-07-16 deposited with the CCDC.
2018-12-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 106.2235(15)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.2804(5)
_cell_length_b                   8.7572(4)
_cell_length_c                   21.1478(8)
_cell_measurement_reflns_used    9980
_cell_measurement_temperature    120.0
_cell_measurement_theta_max      31.60
_cell_measurement_theta_min      2.53
_cell_volume                     2361.53(17)
_computing_cell_refinement       'SAINT V8.38A (Bruker AXS, 2016)'
_computing_data_collection       'APEX3 v.2017.3_0 (Bruker, 2017)'
_computing_data_reduction        'SAINT v8.38A (Bruker, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'XS (Sheldrick, 2008)'
_diffrn_ambient_temperature      120.0
_diffrn_detector                 'Bruker PHOTON 100 CMOS'
_diffrn_detector_area_resol_mean 10.4
_diffrn_detector_type            'CMOS sensor'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       '3-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'focusing mirrors'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0333
_diffrn_reflns_av_unetI/netI     0.0211
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            49176
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.498
_diffrn_reflns_theta_min         2.187
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\mS microsource'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.147
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9582
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;    
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. 
wR2(int) was 0.0912 before and 0.0401 after correction. 
The Ratio of minimum to maximum transmission is 0.9582. 
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.644
_exptl_crystal_description       block
_exptl_crystal_F_000             1176
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.376
_refine_diff_density_min         -0.252
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     427
_refine_ls_number_reflns         6565
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0507
_refine_ls_R_factor_gt           0.0384
_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^)+(0.0500P)^2^+1.1300P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0953
_refine_ls_wR_factor_ref         0.1017
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5390
_reflns_number_total             6565
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ob02899k2.cif
_cod_data_source_block           2q_18srv269
_cod_depositor_comments
;
The following automatic conversions were performed:

'_diffrn_radiation_probe' value 'X-ray' changed to 'x-ray' 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 

 Adding full bibliography for 7156641--7156642.cif.
;
_cod_database_code               7156641
_shelx_shelxl_version_number     2017/1
_shelx_estimated_absorpt_t_max   0.980
_shelx_estimated_absorpt_t_min   0.950
_computing.bruker_data_scaling   'SADABS V2012/1 (Bruker AXS Inc.)'
_olex2_refinement_description
;
;
_olex2_submission_special_instructions 'No special instructions were received'