4-Bromo-<i>N</i>^2^,<i>N</i>^2^,<i>N</i>^6^,<i>N</i>^6^-tetraethylpyridine-2,6-dicarboxamide
de Lill, Daniel T.; de Bettencourt-Dias, Ana; Acta Crystallographica Section E 66 (2010) o2124–; doi:10.1107/S1600536810028837

data_2226865
_publ_section_title
;
 4-Bromo-<i>N</i>^2^,<i>N</i>^2^,<i>N</i>^6^,<i>N</i>^6^-tetraethylpyridine-2,6-dicarboxamide
;
_journal_coeditor_code           FL2308
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2124
_journal_paper_doi               10.1107/S1600536810028837
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C15 H22 Br N3 O2'
_chemical_formula_moiety         'C15 H22 Br N3 O2'
_chemical_formula_sum            'C15 H22 Br N3 O2'
_chemical_formula_weight         356.27
_chemical_name_systematic
;
4-Bromo-<i>N</i>^2^,<i>N</i>^2^,<i>N</i>^6^,<i>N</i>^6^-tetraethylpyridine-2,6-
dicarboxamide
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   17.7096(4)
_cell_length_b                   8.4987(2)
_cell_length_c                   21.5013(4)
_cell_measurement_reflns_used    4936
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.78
_cell_measurement_theta_min      2.82
_cell_volume                     3236.13(12)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        'SAINT (Bruker, 2001)'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 1999)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker APEX CCD'
_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  0.0450
_diffrn_reflns_av_sigmaI/netI    0.0434
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            23172
_diffrn_reflns_theta_full        26.71
_diffrn_reflns_theta_max         26.71
_diffrn_reflns_theta_min         1.89
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.549
_exptl_absorpt_correction_T_max  0.8518
_exptl_absorpt_correction_T_min  0.6697
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2004)'
_exptl_crystal_colour            'clear light yellow'
_exptl_crystal_density_diffrn    1.462
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1472
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.560
_refine_diff_density_min         -0.584
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     194
_refine_ls_number_reflns         3392
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0642
_refine_ls_R_factor_gt           0.0385
_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^)+(0.0375P)^2^+6.2825P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0832
_refine_ls_wR_factor_ref         0.1005
_reflns_number_gt                2499
_reflns_number_total             3392
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            fl2308.cif
_cod_data_source_block           I
_cod_database_code               2226865
_cod_database_fobs_code          2226865