Trifluoromethyl-substituted pyridyl- and pyrazolylboronic acids and esters: synthesis and Suzuki–Miyaura cross-coupling reactions
Clapham, Kate M.; Batsanov, Andrei S.; Bryce, Martin R.; Tarbit, Brian; Organic & Biomolecular Chemistry 7 (2009) 2155–2161; doi:10.1039/b901024f

data_7200930
_publ_section_title
;
 Trifluoromethyl-substituted pyridyl- and pyrazolylboronic acids and
 esters: synthesis and Suzuki--Miyaura cross-coupling reactions
;
_journal_issue                   10
_journal_name_full               'Organic &amp; Biomolecular Chemistry'
_journal_page_first              2155
_journal_page_last               2161
_journal_paper_doi               10.1039/b901024f
_journal_volume                  7
_journal_year                    2009
_chemical_formula_moiety         'C6 H4 B Cl F3 N O2'
_chemical_formula_sum            'C6 H4 B Cl F3 N O2'
_chemical_formula_weight         225.36
_chemical_melting_point          421.7(7)
_chemical_name_common
'2-chloro-5-(trifluoromethyl)-4-pyridylboronic acid'
_chemical_name_systematic
;
2-chloro-5-(trifluoromethyl)-4-pyridylboronic acid
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 96.42(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   24.080(4)
_cell_length_b                   7.8042(12)
_cell_length_c                   9.3848(14)
_cell_measurement_reflns_used    6018
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      29.00
_cell_measurement_theta_min      2.61
_cell_volume                     1752.6(5)
_computing_cell_refinement       'SAINT version 6.45A (Bruker, 2003)'
_computing_data_collection       'SMART version 5.049 (Bruker, 1998)'
_computing_data_reduction        'SAINT version 6.45A (Bruker, 2003)'
_computing_molecular_graphics    'SHELXTL version 6.14 (Bruker, 2003)'
_computing_publication_material  'SHELXTL version 6.14 (Bruker, 2003)'
_computing_structure_refinement  'SHELXTL version 6.14 (Bruker, 2003)'
_computing_structure_solution    'SHELXTL version 6.14 (Bruker, 2003)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Siemens SMART 1K CCD area detector'
_diffrn_measurement_method       '\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  0.0345
_diffrn_reflns_av_sigmaI/netI    0.0213
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            9857
_diffrn_reflns_theta_full        29.01
_diffrn_reflns_theta_max         29.01
_diffrn_reflns_theta_min         1.70
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.454
_exptl_absorpt_correction_T_max  0.9370
_exptl_absorpt_correction_T_min  0.8597
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
'XPREP 6.14 (Bruker, 2003), R(int)=0.039 before correction'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.708
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.416
_refine_diff_density_min         -0.246
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.077
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     143
_refine_ls_number_reflns         2339
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.077
_refine_ls_R_factor_all          0.0324
_refine_ls_R_factor_gt           0.0261
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0362P)^2^+0.8943P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0700
_refine_ls_wR_factor_ref         0.0728
_reflns_number_gt                2001
_reflns_number_total             2339
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b901024f.txt
_cod_data_source_block           27
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7200930