The nature of halogen...halide synthons: theoretical and crystallographic studies.
Awwadi, Firas F.; Willett, Roger D.; Peterson, Kirk A.; Twamley, Brendan; The journal of physical chemistry. A 111 (2007) 2319–2328; doi:10.1021/jp0660684

data_1516648
_publ_section_title
;
 The nature of halogen...halide synthons: theoretical and crystallographic
 studies.
;
_journal_issue                   12
_journal_name_full               'The journal of physical chemistry. A'
_journal_page_first              2319
_journal_page_last               2328
_journal_paper_doi               10.1021/jp0660684
_journal_volume                  111
_journal_year                    2007
_chemical_formula_sum            'C5 H5 Br Cl N'
_chemical_formula_weight         194.46
_space_group_IT_number           11
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yb'
_symmetry_space_group_name_H-M   'P 1 21/m 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 100.045(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   4.6993(8)
_cell_length_b                   8.1822(16)
_cell_length_c                   9.1028(17)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      15.11
_cell_measurement_theta_min      5.00
_cell_volume                     344.64(11)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker P4'
_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  0.0573
_diffrn_reflns_av_sigmaI/netI    0.0729
_diffrn_reflns_limit_h_max       1
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       1
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            998
_diffrn_reflns_theta_full        24.69
_diffrn_reflns_theta_max         24.69
_diffrn_reflns_theta_min         2.27
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    6.243
_exptl_absorpt_correction_T_max  0.8922
_exptl_absorpt_correction_T_min  0.3919
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.874
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             188
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.477
_refine_diff_density_min         -0.465
_refine_diff_density_rms         0.106
_refine_ls_extinction_coef       0.036(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     44
_refine_ls_number_reflns         632
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0753
_refine_ls_R_factor_gt           0.0445
_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^)+(0.0484P)^2^+0.0149P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0958
_refine_ls_wR_factor_ref         0.1069
_reflns_number_gt                465
_reflns_number_total             632
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp0660684si20060917_081838.cif
_cod_data_source_block           fa223a
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/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 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/m
_cod_database_code               1516648