Designed cocrystals based on the pyridine-iodoalkyne halogen bond.
Goroff, Nancy S.; Curtis, Sean M.; Webb, Jeffrey A.; Fowler, Frank W.; Lauher, Joseph W.; Organic letters 7 (2005) 1891–1893; doi:10.1021/ol050184s

data_1506534
_publ_section_title
;
 Designed cocrystals based on the pyridine-iodoalkyne halogen bond.
;
_journal_issue                   10
_journal_name_full               'Organic letters'
_journal_page_first              1891
_journal_page_last               1893
_journal_paper_doi               10.1021/ol050184s
_journal_volume                  7
_journal_year                    2005
_chemical_formula_sum            'C18 H14 I2 N4 O2'
_chemical_formula_weight         572.1
_chemical_name_common            3mepy-ur-ICCCCI
_chemical_name_systematic
; 
1-5 Co-crystal 
;
_space_group_IT_number           7
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P -2yac'
_symmetry_space_group_name_H-M   'P 1 n 1'
_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                 93.812(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.5341(5)
_cell_length_b                   33.343(4)
_cell_length_c                   14.4556(17)
_cell_measurement_temperature    293(2)
_cell_volume                     2180.6(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.900
_diffrn_measured_fraction_theta_max 0.950
_diffrn_measurement_device_type  'CCD area detector'
_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  0.0523
_diffrn_reflns_av_sigmaI/netI    0.1002
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -44
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            13528
_diffrn_reflns_theta_full        28.62
_diffrn_reflns_theta_max         28.62
_diffrn_reflns_theta_min         1.22
_exptl_absorpt_coefficient_mu    2.90
_exptl_absorpt_correction_T_max  .563
_exptl_absorpt_correction_T_min  .254
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   ABSCOR
_exptl_crystal_density_diffrn    1.743
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1088
_exptl_crystal_size_max          .6
_exptl_crystal_size_mid          .4
_exptl_crystal_size_min          .2
_refine_diff_density_max         2.281
_refine_diff_density_min         -0.775
_refine_diff_density_rms         0.216
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.08(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.961
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     449
_refine_ls_number_reflns         4927
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.761
_refine_ls_R_factor_all          0.1251
_refine_ls_R_factor_gt           0.0686
_refine_ls_shift/su_max          0.05
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2128
_refine_ls_wR_factor_ref         0.1944
_reflns_number_gt                4337
_reflns_number_total             4927
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol050184ssi20050128_053614.cif
_cod_data_source_block           3mepy-ur-icccci
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_sg_symbol_H-M      Pn
_cod_database_code               1506534