Evidence for the “Amphoteric” Nature of Fluorine in Halogen Bonds: An Instance of Cl···F Contact
Dikundwar, Amol G.; Row, Tayur N. Guru; Crystal Growth & Design 12 (2012) 1713–; doi:10.1021/cg3002477

data_4506088
_publ_section_title
;
 Evidence for the &#x201C;Amphoteric&#x201D; Nature of Fluorine in Halogen
 Bonds: An Instance of Cl&#x00B7;&#x00B7;&#x00B7;F Contact
;
_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1713
_journal_paper_doi               10.1021/cg3002477
_journal_volume                  12
_journal_year                    2012
_chemical_compound_source        'see text'
_chemical_formula_moiety         'C7 H3 Cl F2 O'
_chemical_formula_sum            'C7 H3 Cl F2 O'
_chemical_formula_weight         176.54
_chemical_name_systematic
;
2,3-difluoro benzoyl chloride
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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
_cell_angle_alpha                94.604(3)
_cell_angle_beta                 104.285(2)
_cell_angle_gamma                115.920(2)
_cell_formula_units_Z            2
_cell_length_a                   6.8606(12)
_cell_length_b                   7.1974(12)
_cell_length_c                   8.0394(14)
_cell_measurement_reflns_used    3440
_cell_measurement_temperature    90(1)
_cell_measurement_theta_max      26.0
_cell_measurement_theta_min      2.7
_cell_volume                     337.84(10)
_computing_cell_refinement       Apex2
_computing_data_collection       'Bruker kappa Apex2'
_computing_data_reduction        SAINT32
_computing_molecular_graphics
'Ortep-3 (Farrugia, 1997) and CAMERON (Watkin et al., 1993)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97  (Sheldrick, 2008)'
_diffrn_ambient_temperature      90(1)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Brucker kappa apex2 CCD area detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0248
_diffrn_reflns_av_sigmaI/netI    0.0265
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            3440
_diffrn_reflns_reduction_process
;
;
_diffrn_reflns_theta_full        25.98
_diffrn_reflns_theta_max         25.98
_diffrn_reflns_theta_min         2.68
_exptl_absorpt_coefficient_mu    0.530
_exptl_absorpt_correction_T_max  0.8571
_exptl_absorpt_correction_T_min  0.8159
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Apex2 (Bruker)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.735
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       cylindrical
_exptl_crystal_F_000             176
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.447
_refine_diff_density_min         -0.277
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.103
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     112
_refine_ls_number_reflns         1318
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.103
_refine_ls_R_factor_all          0.0344
_refine_ls_R_factor_gt           0.0320
_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^)+(0.0460P)^2^+0.1137P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0846
_refine_ls_wR_factor_ref         0.0862
_reflns_number_gt                1220
_reflns_number_total             1318
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg3002477_si_003.cif
_cod_data_source_block           a23fbzn
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        337.85(10)
_cod_database_code               4506088