Thermodynamic parameters of the pedal motion in the crystal structures of two bromomethylated azobenzenes
Vande Velde, Christophe M. L.; Zeller, Matthias; Azov, Vladimir A.; CrystEngComm 17 (2015) 5751–; doi:10.1039/C5CE00905G

data_7220863
_publ_section_title
;
 Thermodynamic parameters of the pedal motion in the crystal structures of
 two bromomethylated azobenzenes
;
_journal_issue                   30
_journal_name_full               CrystEngComm
_journal_page_first              5751
_journal_paper_doi               10.1039/C5CE00905G
_journal_volume                  17
_journal_year                    2015
_chemical_formula_moiety         'C14 H12 Br2 N2'
_chemical_formula_sum            'C14 H12 Br2 N2'
_chemical_formula_weight         368.08
_chemical_melting_point          419.5(5)
_chemical_name_systematic
;
 (1E)-1,2-bis[3-(Bromomethyl)phenyl]-diazene
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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-2013
_audit_update_record
;
2015-05-05 deposited with the CCDC.
2015-06-25 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 98.584(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   13.858(2)
_cell_length_b                   4.3834(7)
_cell_length_c                   11.1513(17)
_cell_measurement_reflns_used    3572
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      31.55
_cell_measurement_theta_min      2.54
_cell_volume                     669.80(18)
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      90(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.924
_diffrn_measurement_device_type  'Bruker Smart 1000 area detector'
_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  0.0249
_diffrn_reflns_av_unetI/netI     0.0264
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.924
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            6248
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.924
_diffrn_reflns_theta_full        28.000
_diffrn_reflns_theta_max         31.661
_diffrn_reflns_theta_min         2.973
_exptl_absorpt_coefficient_mu    6.034
_exptl_absorpt_correction_T_max  0.7463
_exptl_absorpt_correction_T_min  0.5303
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS 2008-1'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.825
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.550
_exptl_crystal_size_mid          0.520
_exptl_crystal_size_min          0.470
_refine_diff_density_max         0.949
_refine_diff_density_min         -0.543
_refine_diff_density_rms         0.087
_refine_ls_extinction_coef       0.0253(18)
_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   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     111
_refine_ls_number_reflns         2091
_refine_ls_number_restraints     21
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0257
_refine_ls_R_factor_gt           0.0215
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(Fo^2^)+(0.0288P)^2^+0.2747P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0539
_refine_ls_wR_factor_ref         0.0551
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1867
_reflns_number_total             2091
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5ce00905g3.cif
_cod_data_source_block           12mz119_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '419-420K' was changed to '419.5(5)'
- the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 

 Adding full bibliography for 7220863--7220879.cif.
;
_cod_original_cell_volume        669.81(18)
_cod_database_code               7220863
_shelx_estimated_absorpt_t_min   0.136
_shelx_estimated_absorpt_t_max   0.164
_shelxl_version_number           2013-2
_shelx_res_checksum              30208