Fluorinated liquid crystals formed by halogen bonding
Duncan Bruce; Rosalba Liantonio; Pierangelo Metrangolo; Carsten Prasang; Giuseppe Resnati; Adrian C. Whitwood; Chemical Communications  (2006) –; doi:10.1039/b605101d

data_7101322
_publ_section_title
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Fluorinated liquid crystals formed by halogen bonding
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_journal_issue                   31
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/b605101d
_journal_year                    2006
_chemical_formula_moiety         'C21 H27 N O, 0.5(C4 F8 I2)'
_chemical_formula_sum            'C23 H27 F4 I N O'
_chemical_formula_weight         536.36
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                71.955(2)
_cell_angle_beta                 83.598(2)
_cell_angle_gamma                89.641(2)
_cell_formula_units_Z            2
_cell_length_a                   7.8806(8)
_cell_length_b                   11.9639(12)
_cell_length_c                   12.6870(12)
_cell_measurement_reflns_used    7083
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      28.33
_cell_measurement_theta_min      2.60
_cell_volume                     1129.73(19)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      110(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_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  0.0199
_diffrn_reflns_av_sigmaI/netI    0.0293
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            11532
_diffrn_reflns_theta_full        28.33
_diffrn_reflns_theta_max         28.33
_diffrn_reflns_theta_min         1.70
_exptl_absorpt_coefficient_mu    1.464
_exptl_absorpt_correction_T_max  0.740
_exptl_absorpt_correction_T_min  0.642
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2.30; (Sheldrick)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.577
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             538
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.21
_refine_diff_density_max         1.885
_refine_diff_density_min         -0.580
_refine_diff_density_rms         0.106
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         5545
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.0338
_refine_ls_R_factor_gt           0.0300
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0446P)^2^+0.3532P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0757
_refine_ls_wR_factor_ref         0.0776
_reflns_number_gt                5066
_reflns_number_total             5545
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b605101d.txt
_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_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7101322