2,6-Diiodopyridine
Holmes, Brian T.; Padgett, Clifford W.; Pennington, William T.; Acta Crystallographica Section C 58 (2002) o602–o603; doi:10.1107/S0108270102014932

data_2012993
_publ_section_title
;
 2,6-Diiodopyridine
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o602
_journal_page_last               o603
_journal_paper_doi               10.1107/S0108270102014932
_journal_volume                  58
_journal_year                    2002
_chemical_formula_iupac          'C5 H3 I2 N1'
_chemical_formula_moiety         'C5 H3 I2 N1'
_chemical_formula_structural     'C5 H3 I2 N1'
_chemical_formula_sum            'C5 H3 I2 N'
_chemical_formula_weight         330.88
_chemical_melting_point          186
_chemical_name_common            2,6-diiodopyridine
_chemical_name_systematic        ' 2,6-diiodopyridine'
_space_group_IT_number           42
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'F 2 -2'
_symmetry_space_group_name_H-M   'F m m 2'
_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            4
_cell_length_a                   6.8039(14)
_cell_length_b                   17.011(3)
_cell_length_c                   6.1959(12)
_cell_measurement_reflns_used    1322
_cell_measurement_temperature    148
_cell_measurement_theta_max      26.3714
_cell_measurement_theta_min      4.6113
_cell_volume                     717.1(2)
_computing_cell_refinement       CrystalClear
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2001)'
_computing_data_reduction        CrystalClear
_computing_molecular_graphics    SHELXTL-Plus
_computing_publication_material  SHELXTL-Plus
_computing_structure_refinement  SHELXTL-Plus
_computing_structure_solution    'SHELXTL-Plus (Sheldrick, 2000)'
_diffrn_ambient_temperature      148(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Mercury AFC-8S'
_diffrn_measurement_method       \w
_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  0.0324
_diffrn_reflns_av_sigmaI/netI    0.0284
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            1721
_diffrn_reflns_theta_full        26.34
_diffrn_reflns_theta_max         26.34
_diffrn_reflns_theta_min         4.61
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    8.667
_exptl_absorpt_correction_T_max  0.660
_exptl_absorpt_correction_T_min  0.300
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(REQAB; Jacobson, 1998)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    3.065
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.168
_exptl_crystal_size_mid          0.048
_exptl_crystal_size_min          0.048
_refine_diff_density_max         0.670
_refine_diff_density_min         -0.581
_refine_ls_abs_structure_details 'Flack (1983), 180 Friedel pairs'
_refine_ls_abs_structure_Flack   0.00(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.107
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     27
_refine_ls_number_reflns         406
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.106
_refine_ls_R_factor_all          0.0200
_refine_ls_R_factor_gt           0.0200
_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^)+(0.0341P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0498
_refine_ls_wR_factor_ref         0.0498
_reflns_number_gt                405
_reflns_number_total             406
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ln1141.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

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

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_formula_sum        'C5 H3 I2 N1'
_cod_database_code               2012993
_cod_database_fobs_code          2012993