The halogen bond made visible: experimental charge density of a very short intermolecular ClCl donor-acceptor contact
Ruimin Wang; Thomas S. Dols; Christian W. Lehmann; Ulli Englert; Chem.Commun. 48 (2012) 6830–6832; doi:10.1039/c2cc32647g

data_7107902
_publ_section_title
;
 The halogen bond made visible: experimental charge density of a very
 short intermolecular ClCl donor-acceptor contact
;
_journal_issue                   54
_journal_name_full               Chem.Commun.
_journal_page_first              6830
_journal_page_last               6832
_journal_paper_doi               10.1039/c2cc32647g
_journal_volume                  48
_journal_year                    2012
_chemical_formula_moiety         'C10 H4 Cl8 N2 Zn'
_chemical_formula_sum            'C10 H4 Cl8 N2 Zn'
_chemical_formula_weight         501.12
_chemical_name_systematic
;
?
;
_space_group_IT_number           102
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4n -2n'
_symmetry_space_group_name_H-M   'P 42 n m'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.4404(3)
_cell_length_b                   12.4404(3)
_cell_length_c                   5.2602(3)
_cell_measurement_reflns_used    110066
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      54.9981
_cell_measurement_theta_min      1.6275
_cell_volume                     814.09(5)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT, SADABS and XPREP'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker Kappa CCD'
_diffrn_measurement_method       \w-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         '0.2 x 2mm^2^ focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0426
_diffrn_reflns_av_sigmaI/netI    0.0195
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            81346
_diffrn_reflns_theta_full        55.21
_diffrn_reflns_theta_max         55.21
_diffrn_reflns_theta_min         2.32
_exptl_absorpt_coefficient_mu    2.811
_exptl_absorpt_correction_T_max  0.920
_exptl_absorpt_correction_T_min  0.448
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.044
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.03
_refine_diff_density_max         1.063
_refine_diff_density_min         -0.744
_refine_diff_density_rms         0.100
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.130(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     60
_refine_ls_number_reflns         5405
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0303
_refine_ls_R_factor_gt           0.0268
_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^)+(0.0250P)^2^+0.4557P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0660
_refine_ls_wR_factor_ref         0.0690
_reflns_number_gt                5096
_reflns_number_total             5405
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc32647g.txt
_cod_data_source_block           1iam
_cod_database_code               7107902