Structures and phase transitions in the neat 4,4'-di-tert-butyl-2,2'-bipyridyl and in its molecular complexes with either brom- or iodanilic acid
Rok, Magdalena; Szklarz, Przemyslaw; Moskwa, Marcin; Kijewska, Monika; Baran, Jan; Bator, Grazyna; Medycki, Wojciech; Zamponi, Michaela; CrystEngComm  (2017) –; doi:10.1039/C7CE01481C

data_7229447
_publ_section_title
;
 Structures and phase transitions in the neat
 4,4'-di-tert-butyl-2,2'-bipyridyl and in its molecular complexes with
 either brom- or iodanilic acid
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/C7CE01481C
_journal_year                    2017
_chemical_formula_moiety         'C18 H24 N2'
_chemical_formula_sum            'C18 H24 N2'
_chemical_formula_weight         268.39
_chemical_name_systematic
;
 4,4'-di-tert-butyl-2,2'-bipyridyl
;
_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   mixed
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2017-08-07 deposited with the CCDC.
2017-10-31 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.775(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.3157(5)
_cell_length_b                   6.3341(3)
_cell_length_c                   24.5593(14)
_cell_measurement_reflns_used    3566
_cell_measurement_temperature    190(2)
_cell_measurement_theta_max      28.7195
_cell_measurement_theta_min      2.9389
_cell_volume                     1581.42(14)
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      190(2)
_diffrn_detector_area_resol_mean 10.3456
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.934
_diffrn_measurement_device_type  'Xcalibur, Ruby'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0493
_diffrn_reflns_av_unetI/netI     0.0539
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.934
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            9886
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.934
_diffrn_reflns_theta_full        27.000
_diffrn_reflns_theta_max         28.783
_diffrn_reflns_theta_min         3.325
_exptl_absorpt_coefficient_mu    0.066
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.127
_exptl_crystal_description       blocks
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.261
_exptl_crystal_size_mid          0.223
_exptl_crystal_size_min          0.153
_refine_diff_density_max         0.407
_refine_diff_density_min         -0.305
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         3847
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.1232
_refine_ls_R_factor_gt           0.0751
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1416P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2126
_refine_ls_wR_factor_ref         0.2386
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2114
_reflns_number_total             3847
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ce01481c2.cif
_cod_data_source_block           dtbbp190
_cod_database_code               7229447
_shelxl_version_number           2013-4
_shelx_res_checksum              5842