2,6-Dibromo-3,5-dimethylpyridine and 2,6-diiodo-3,5-dimethylpyridine
Pugh, David; Acta Crystallographica Section C 62 (2006) o590–o592; doi:10.1107/S0108270106032732

data_2015606
_publ_section_title
;
 2,6-Dibromo-3,5-dimethylpyridine and 2,6-diiodo-3,5-dimethylpyridine
;
_journal_coeditor_code           GG3034
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o590
_journal_page_last               o592
_journal_paper_doi               10.1107/S0108270106032732
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C7 H7 Br2 N'
_chemical_formula_moiety         'C7 H7 Br2 N'
_chemical_formula_sum            'C7 H7 Br2 N'
_chemical_formula_weight         264.96
_chemical_name_common            'Compound I'
_chemical_name_systematic
;
2,6-dibromo-3,5-dimethylpyridine
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   10.5429(3)
_cell_length_b                   12.4821(4)
_cell_length_c                   12.6458(3)
_cell_measurement_reflns_used    2177
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1664.16(8)
_computing_cell_refinement       'DENZO (Otwinowski & Minor, 1997) and COLLECT'
_computing_data_collection       'COLLECT (Hooft, 1998)'
_computing_data_reduction        'DENZO and COLLECT'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material
;
PLATON (Spek, 2003), WinGX (Farrugia, 1999)
and enCIFer (Allen <i>et al.</i>,  2004)
;
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare <i>et al.</i>,  1994)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker--Nonius KappaCCD'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0431
_diffrn_reflns_av_sigmaI/netI    0.0317
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            14709
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         3.61
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    9.665
_exptl_absorpt_correction_T_max  0.826
_exptl_absorpt_correction_T_min  0.397
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.115
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             1008
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.461
_refine_diff_density_min         -0.495
_refine_ls_abs_structure_details 'Flack (1983), 1623 Friedel pairs'
_refine_ls_abs_structure_Flack   0.471(17)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.076
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     186
_refine_ls_number_reflns         2175
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.076
_refine_ls_R_factor_all          0.0307
_refine_ls_R_factor_gt           0.0255
_refine_ls_shift/su_max          0.022
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0144P)^2^+1.0475P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0469
_refine_ls_wR_factor_ref         0.0486
_reflns_number_gt                1984
_reflns_number_total             2175
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gg3034.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_geom_bond_publ_flag' value 'Y' changed to 'y' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (8
times).

'_geom_torsion_publ_flag' value 'Y' changed to 'y' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (2 times).

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_geom_bond_publ_flag' value 'Y' changed to 'y' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (8
times).

'_geom_torsion_publ_flag' value 'Y' changed to 'y' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (2 times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_database_code               2015606
_cod_database_fobs_code          2015606