Formation of Dinuclear, Macrocyclic, and Chain Structures from HgI2 and a Semirigid Benzimidazole-Based Bridging Ligand: An Example of Ring-Opening Supramolecular Isomerism
Cheng-Yong Su; Andrea M. Goforth; Mark D. Smith; Hans-Conrad zur Loye; Inorganic Chemistry 42 (2003) 5685–5692; doi:10.1021/ic034388l

data_4314185
_publ_section_title
;
 Formation of Dinuclear, Macrocyclic, and Chain Structures from HgI2 and a
 Semirigid Benzimidazole-Based Bridging Ligand: An Example of Ring-Opening
 Supramolecular Isomerism
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_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5685
_journal_page_last               5692
_journal_paper_doi               10.1021/ic034388l
_journal_volume                  42
_journal_year                    2003
_chemical_formula_sum            'C25 H24 Hg2 I4 N4'
_chemical_formula_weight         1289.26
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           11
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yb'
_symmetry_space_group_name_H-M   'P 1 21/m 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                 90.910(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.0385(8)
_cell_length_b                   19.1301(18)
_cell_length_c                   9.8324(9)
_cell_measurement_reflns_used    9135
_cell_measurement_temperature    150.0(2)
_cell_measurement_theta_max      26.406
_cell_measurement_theta_min      2.329
_cell_volume                     1511.8(2)
_computing_cell_refinement       'SAINT+ NT V6.02a (Bruker, 1998)'
_computing_data_collection       'SMART NT V5.625 (Bruker, 1998)'
_computing_data_reduction        'SAINT+ NT V6.02a'
_computing_molecular_graphics    'SHELXTL V5.1 (Sheldrick, 1997)'
_computing_publication_material  'SHELXTL V5.1'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150.0(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0410
_diffrn_reflns_av_sigmaI/netI    0.0372
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            11981
_diffrn_reflns_theta_full        26.43
_diffrn_reflns_theta_max         26.43
_diffrn_reflns_theta_min         2.07
_diffrn_standards_decay_%        <1
_exptl_absorpt_coefficient_mu    14.248
_exptl_absorpt_correction_T_max  0.2603
_exptl_absorpt_correction_T_min  0.1303
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS, Bruker, 1998)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.832
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1148
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.08
_refine_diff_density_max         2.307
_refine_diff_density_min         -1.044
_refine_diff_density_rms         0.197
_refine_ls_extinction_coef       0.00056(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.003
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     168
_refine_ls_number_reflns         3194
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.0333
_refine_ls_R_factor_gt           0.0296
_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^)+(0.0361P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0696
_refine_ls_wR_factor_ref         0.0706
_reflns_number_gt                2797
_reflns_number_total             3194
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic034388lsi20030709_115411_2.cif
_cod_data_source_block           compd1
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
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_cod_database_code               4314185