Halogen-bonded liquid crystals of 4-alkoxystilbazoles with molecular iodine: a very short halogen bond and unusual mesophase stability
Linda J. McAllister; Carsten Prasang; Joanna P.-W. Wong; Robert J. Thatcher; Adrian C. Whitwood; Bertrand Donnio; Peter O'Brien; Peter B. Karadakov; Duncan W. Bruce; Chem.Commun. 49 (2013) 3946–; doi:10.1039/c3cc41227j

data_7109170
_publ_section_title
;
 Halogen-bonded liquid crystals of 4-alkoxystilbazoles with molecular
 iodine: a very short halogen bond and unusual mesophase stability
;
_journal_name_full               Chem.Commun.
_journal_page_first              3946
_journal_paper_doi               10.1039/c3cc41227j
_journal_volume                  49
_journal_year                    2013
_chemical_formula_moiety         'C21 H27 N O, I2'
_chemical_formula_sum            'C21 H27 I2 N O'
_chemical_formula_weight         563.24
_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                99.655(3)
_cell_angle_beta                 95.039(3)
_cell_angle_gamma                109.933(3)
_cell_formula_units_Z            2
_cell_length_a                   9.5988(17)
_cell_length_b                   10.6104(19)
_cell_length_c                   11.461(2)
_cell_measurement_reflns_used    2483
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      28.29
_cell_measurement_theta_min      2.29
_cell_volume                     1068.5(3)
_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, 1997)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_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  0.0434
_diffrn_reflns_av_sigmaI/netI    0.0808
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            10215
_diffrn_reflns_theta_full        28.32
_diffrn_reflns_theta_max         28.32
_diffrn_reflns_theta_min         1.82
_exptl_absorpt_coefficient_mu    2.952
_exptl_absorpt_correction_T_max  0.767
_exptl_absorpt_correction_T_min  0.606
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2.03 (Sheldrick)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.751
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             548
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.998
_refine_diff_density_min         -0.917
_refine_diff_density_rms         0.164
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     227
_refine_ls_number_reflns         5208
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.0772
_refine_ls_R_factor_gt           0.0400
_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^)+(0.0273P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0728
_refine_ls_wR_factor_ref         0.0805
_reflns_number_gt                3456
_reflns_number_total             5208
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc41227j.txt
_cod_data_source_block           dwb0823m
_cod_original_cell_volume        1068.4(3)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7109170