Molecular packing preferences in “bridge-flipped” isomeric aryl-2-pyridylhydrazones and 2-pyridinecarboxaldehyde arylhydrazones
Beard, Lindsey E.; Ojala, Charles R.; Kassekert, Kara J.; Ojala, William H.; CrystEngComm 18 (2016) 7036–; doi:10.1039/C6CE01519K

data_7226243
_publ_section_title
;
 Molecular packing preferences in &#x201C;bridge-flipped&#x201D; isomeric
 aryl-2-pyridylhydrazones and 2-pyridinecarboxaldehyde arylhydrazones
;
_journal_issue                   37
_journal_name_full               CrystEngComm
_journal_page_first              7036
_journal_paper_doi               10.1039/C6CE01519K
_journal_volume                  18
_journal_year                    2016
_chemical_formula_sum            'C13 H9 Br N4'
_chemical_formula_weight         301.15
_chemical_melting_point          524.5(15)
_chemical_name_systematic        '4-CNbenzaldehyde 2-(5Br-2pyridinyl)hydrazone'
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2016-07-07 deposited with the CCDC.
2016-08-12 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 102.71(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.552(5)
_cell_length_b                   3.962(3)
_cell_length_c                   25.17(2)
_cell_measurement_reflns_used    2879
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      74.39
_cell_measurement_theta_min      3.66
_cell_volume                     1221.1(14)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics
'PLATON (Spek 2009) Mercury (Macrae et al. 2008)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT-2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker-AXS D8 Venture PHOTON-II'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0516
_diffrn_reflns_av_unetI/netI     0.0358
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            14181
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         74.484
_diffrn_reflns_theta_min         3.600
_diffrn_source                   'ImuS micro-focus'
_exptl_absorpt_coefficient_mu    4.478
_exptl_absorpt_correction_T_max  0.7538
_exptl_absorpt_correction_T_min  0.4795
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS-2014 (Sheldrick, 2014)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.638
_exptl_crystal_description       needle
_exptl_crystal_F_000             600
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: ethanol'
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.053
_exptl_crystal_size_min          0.010
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_refine_diff_density_min         -0.684
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     166
_refine_ls_number_reflns         2480
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.127
_refine_ls_R_factor_all          0.0489
_refine_ls_R_factor_gt           0.0411
_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^)+4.7349P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0882
_refine_ls_wR_factor_ref         0.0954
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2163
_reflns_number_total             2480
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6ce01519k2.cif
_cod_data_source_block           16022a4NNC
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '523-526 K' was changed to
'524.5(15)' - the average value was taken and precision was
estimated.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 7226237--7226244.cif.
;
_cod_original_cell_volume        1220.9(14)
_cod_database_code               7226243
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.401
_shelx_estimated_absorpt_t_max   0.957
_shelx_res_checksum              3592