C‒Br⋯O supramolecular synthon: in situ cryocrystallography of low melting halogen-bonded complexes
Nayak, Susanta K.; Terraneo, Giancarlo; Forni, Alessandra; Metrangolo, Pierangelo; Resnati, Giuseppe; CrystEngComm 14 (2012) 4259–; doi:10.1039/c2ce25403d

data_7208124
_publ_section_title
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 C--Br&#x22EF;O supramolecular synthon: in situ cryocrystallography of low
 melting halogen-bonded complexes
;
_journal_issue                   13
_journal_name_full               CrystEngComm
_journal_page_first              4259
_journal_paper_doi               10.1039/c2ce25403d
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         '2(C6 Br2 F4), C3 H7 N O'
_chemical_formula_sum            'C15 H7 Br4 F8 N O'
_chemical_formula_weight         688.86
_chemical_name_common
'Dibromotetrafluorobenzene Dimethyl formamide'
_chemical_name_systematic
;
Dibromotetrafluorobenzene Dimethyl formamide
;
_space_group_IT_number           43
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      43
_symmetry_space_group_name_Hall  'F 2 -2d'
_symmetry_space_group_name_H-M   'F d d 2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   56.546(6)
_cell_length_b                   8.1861(8)
_cell_length_c                   8.6095(9)
_cell_measurement_reflns_used    143
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      26.0
_cell_measurement_theta_min      1.4
_cell_volume                     3985.3(7)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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      120(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0708
_diffrn_reflns_av_sigmaI/netI    0.0476
_diffrn_reflns_limit_h_max       69
_diffrn_reflns_limit_h_min       -69
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            16204
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         1.44
_exptl_absorpt_coefficient_mu    8.158
_exptl_absorpt_correction_T_max  0.1934
_exptl_absorpt_correction_T_min  0.1934
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.296
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       CYCLINDER
_exptl_crystal_F_000             2592
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.783
_refine_diff_density_min         -0.581
_refine_diff_density_rms         0.184
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.05(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.184
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     133
_refine_ls_number_reflns         1886
_refine_ls_number_restraints     27
_refine_ls_restrained_S_all      1.176
_refine_ls_R_factor_all          0.0543
_refine_ls_R_factor_gt           0.0352
_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^)+(0.0463P)^2^+16.3248P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0752
_refine_ls_wR_factor_ref         0.1013
_reflns_number_gt                1581
_reflns_number_total             1886
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce25403d.txt
_cod_data_source_block           DBTFB-DMF
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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 1891 2012-01-12 08:04:46Z andrius 
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_cod_database_code               7208124