Intramolecular six-membered N–H⋯Br and N–H⋯I hydrogen bonding in aromatic amides in the absence of competing interactions
Zhu, Yuan-Yuan; Jiang, Long; Li, Zhan-Ting; CrystEngComm 11 (2009) 235–; doi:10.1039/b814859g

data_7200406
_publ_section_title
;
 Intramolecular six-membered N--H&#x22EF;Br and N--H&#x22EF;I hydrogen
 bonding in aromatic amides in the absence of competing interactions
;
_journal_issue                   2
_journal_name_full               CrystEngComm
_journal_page_first              235
_journal_paper_doi               10.1039/b814859g
_journal_volume                  11
_journal_year                    2009
_chemical_formula_moiety         'C26 H21 Br N2 O, C H Cl3'
_chemical_formula_sum            'C27 H22 Br Cl3 N2 O'
_chemical_formula_weight         576.73
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 103.860(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.101(7)
_cell_length_b                   10.531(6)
_cell_length_c                   19.954(10)
_cell_measurement_reflns_used    2120
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      20.75
_cell_measurement_theta_min      2.32
_cell_volume                     2673(2)
_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      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0621
_diffrn_reflns_av_sigmaI/netI    0.0798
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            13228
_diffrn_reflns_theta_full        25.04
_diffrn_reflns_theta_max         25.04
_diffrn_reflns_theta_min         2.10
_exptl_absorpt_coefficient_mu    1.860
_exptl_absorpt_correction_T_max  0.7678
_exptl_absorpt_correction_T_min  0.7073
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.433
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1168
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.868
_refine_diff_density_min         -0.694
_refine_diff_density_rms         0.083
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         4723
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.1285
_refine_ls_R_factor_gt           0.0626
_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^)+(0.1031P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1650
_refine_ls_wR_factor_ref         0.2014
_reflns_number_gt                2504
_reflns_number_total             4723
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b814859g.txt
_cod_data_source_block           080701b_0m
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7200406