Switching between halogen- and hydrogen-bonding in stoichiometric variations of a cocrystal of a phosphine oxide
Oh, Se Ye; Nickels, Christopher W.; Garcia, Felipe; Jones, William; Friščić, Tomislav; CrystEngComm 14 (2012) 6110–; doi:10.1039/c2ce25653c

data_7208556
_publ_section_title
;
 Switching between halogen- and hydrogen-bonding in stoichiometric
 variations of a cocrystal of a phosphine oxide
;
_journal_issue                   19
_journal_name_full               CrystEngComm
_journal_page_first              6110
_journal_paper_doi               10.1039/c2ce25653c
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C6 F4 I2'
_chemical_formula_sum            'C6 F4 I2'
_chemical_formula_weight         401.86
_chemical_name_common            1,4-diiodotetrafluorobenzene
_chemical_name_systematic
;
1,4-diiodotetrafluorobenzene
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 93.61(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.2187(3)
_cell_length_b                   11.6168(7)
_cell_length_c                   5.7876(5)
_cell_measurement_reflns_used    12663
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      30.03
_cell_measurement_theta_min      1.00
_cell_volume                     417.27(5)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius B.V. 1998)'
_computing_data_reduction
;
HKL Denzo and Scalepack (Otwinowski & Minor 1997)
;
_computing_publication_material  'SHELXL-97 (Sheldrick 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick 1997)'
_computing_structure_solution    'SIR-92 (Altomare et al. 1994)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       'Thin slice \w and \f scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0468
_diffrn_reflns_av_sigmaI/netI    0.0339
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            4851
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         3.72
_exptl_absorpt_coefficient_mu    7.542
_exptl_absorpt_correction_T_max  0.922
_exptl_absorpt_correction_T_min  0.642
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements
Sortav (Blessing 1995)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    3.198
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             356
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.016
_refine_diff_density_min         -1.595
_refine_diff_density_rms         0.191
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     55
_refine_ls_number_reflns         1212
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0393
_refine_ls_R_factor_gt           0.0313
_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^)+(0.0447P)^2^+0.5446P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0773
_refine_ls_wR_factor_ref         0.0830
_reflns_number_gt                1037
_reflns_number_total             1212
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce25653c.txt
_cod_data_source_block           tfib
_cod_original_cell_volume        417.28(5)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7208556