Synthesis and characterisation of some new boron compounds containing the 2,4,6-(CF3)3C6H2(fluoromes = Ar), 2,6-(CF3)2C6H3(fluoroxyl = Ar'), or 2,4-(CF3)2C6H3(Ar″) ligands
Stéphanie M. Cornet; Keith B. Dillon; Christopher D. Entwistle; Mark A. Fox; Andrés E. Goeta; Helen P. Goodwin; Todd B. Marder; Amber L. Thompson; Dalton Trans.  (2003) 4395–4405; doi:10.1039/b309820f

data_7013544
_publ_section_title
;
 Synthesis and characterisation of some new boron compounds containing
 the 2,4,6-(CF3)3C6H2(fluoromes = Ar), 2,6-(CF3)2C6H3(fluoroxyl = Ar'),
 or 2,4-(CF3)2C6H3(Ar&#x2033;) ligands
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_journal_issue                   23
_journal_name_full               'Dalton Trans.'
_journal_page_first              4395
_journal_page_last               4405
_journal_paper_doi               10.1039/b309820f
_journal_year                    2003
_chemical_formula_moiety         'C18 H22 B F'
_chemical_formula_sum            'C18 H22 B F'
_chemical_formula_weight         268.17
_chemical_melting_point          ?
_chemical_name_common            Bis-(2,4,6-trimethyl-phenyl)-fluoroborane
_chemical_name_systematic
;
Bis-(2,4,6-trimethyl-phenyl)-fluoroborane
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.3380(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.2080(5)
_cell_length_b                   7.8003(5)
_cell_length_c                   24.0891(16)
_cell_measurement_reflns_used    3401
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      56.563
_cell_measurement_theta_min      5.490
_cell_volume                     1542.27(17)
_computing_cell_refinement       'SMART-NT V5.0 (Bruker, 1998)'
_computing_data_collection       'SMART-NT V5.0 (Bruker, 1998)'
_computing_data_reduction        'SMART-NT V5.0 (Bruker, 1998)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART CCD 1K 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  0.0388
_diffrn_reflns_av_sigmaI/netI    0.0413
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            10456
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         1.69
_exptl_absorpt_coefficient_mu    0.072
_exptl_absorpt_correction_T_max  0.9857
_exptl_absorpt_correction_T_min  0.9786
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'XPREP (SHELXTL,1997)'
_exptl_crystal_colour            clear_light_colourless
_exptl_crystal_density_diffrn    1.155
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       block
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.354
_refine_diff_density_min         -0.227
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     269
_refine_ls_number_reflns         3802
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0795
_refine_ls_R_factor_gt           0.0528
_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^)+(0.0669P)^2^+0.4422P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1274
_refine_ls_wR_factor_ref         0.1418
_reflns_number_gt                2719
_reflns_number_total             3802
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b309820f.txt
_cod_data_source_block           5
_cod_depositor_comments
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The following automatic conversions were performed:
'_exptl_absorpt_correction_type' value 'Integration' changed to
'integration' according to
'/home/adriana/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 1555 2011-01-17 13:19:09Z saulius 

The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7013544