Hierarchical halogen bonding induces polymorphism
Raatikainen, Kari; Rissanen, Kari; CrystEngComm 11 (2009) 750–; doi:10.1039/b821085n

data_7200749
_publ_section_title
;
 Hierarchical halogen bonding induces polymorphism
;
_journal_issue                   5
_journal_name_full               CrystEngComm
_journal_page_first              750
_journal_paper_doi               10.1039/b821085n
_journal_volume                  11
_journal_year                    2009
_chemical_absolute_configuration unk
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C6 H12 N2, 2(C6 H3 I N2 O4)'
_chemical_formula_sum            'C18 H18 I2 N6 O8'
_chemical_formula_weight         700.18
_space_group_IT_number           78
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      78
_symmetry_space_group_name_Hall  'P 4cw'
_symmetry_space_group_name_H-M   'P 43'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2008-08-25T15:44:54-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.3457(3)
_cell_length_b                   10.3457(3)
_cell_length_c                   21.8653(5)
_cell_measurement_reflns_used    11890
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      28.283
_cell_measurement_theta_min      0.407
_cell_measurement_wavelength     0.71073
_cell_volume                     2340.32(11)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Giacovazzo et al, 1993)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 1
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_orient_matrix_type       'by Bruker AXS Collect from scalepack cell'
_diffrn_orient_matrix_UB_11      0.16382E-1
_diffrn_orient_matrix_UB_12      -0.641993E-1
_diffrn_orient_matrix_UB_13      0.332815E-1
_diffrn_orient_matrix_UB_21      0.941372E-1
_diffrn_orient_matrix_UB_22      -0.12E-4
_diffrn_orient_matrix_UB_23      -0.104088E-1
_diffrn_orient_matrix_UB_31      0.145656E-1
_diffrn_orient_matrix_UB_32      0.722625E-1
_diffrn_orient_matrix_UB_33      0.295914E-1
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0312
_diffrn_reflns_av_unetI/netI     0.036
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            8226
_diffrn_reflns_theta_full        25
_diffrn_reflns_theta_max         25
_diffrn_reflns_theta_min         1.97
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    2.744
_exptl_absorpt_correction_T_max  0.6630
_exptl_absorpt_correction_T_min  0.5996
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Blessing et al., 1995)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.987
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1352
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.321
_refine_diff_density_min         -0.29
_refine_diff_density_rms         0.069
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.49(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     308
_refine_ls_number_reflns         4124
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0294
_refine_ls_R_factor_gt           0.0258
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0089P)^2^+4.0924P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0492
_refine_ls_wR_factor_ref         0.0505
_reflns_number_gt                3836
_reflns_number_total             4124
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b821085n.txt
_cod_data_source_block           1
_cod_database_code               7200749