N-Heterocyclic carbene silver(i), palladium(ii) and mercury(ii) complexes: synthesis, structural studies and catalytic activity
Liu, Qing-Xiang; Wang, Hong; Zhao, Xiao-Jun; Yao, Zhao-Quan; Wang, Zhi-Qiang; Chen, Ai-Hui; Wang, Xiu-Guang; CrystEngComm 14 (2012) 5330–; doi:10.1039/c2ce25365h

data_7208286
_publ_section_title
;
 N-Heterocyclic carbene silver(i), palladium(ii) and mercury(ii)
 complexes: synthesis, structural studies and catalytic activity
;
_journal_issue                   16
_journal_name_full               CrystEngComm
_journal_page_first              5330
_journal_paper_doi               10.1039/c2ce25365h
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C40 H38.5 Br4 Hg2 N7.5'
_chemical_formula_weight         1345.10
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 99.6010(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   15.9630(11)
_cell_length_b                   15.4870(10)
_cell_length_c                   34.670(2)
_cell_measurement_reflns_used    6524
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.22
_cell_measurement_theta_min      2.38
_cell_volume                     8451.0(9)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0375
_diffrn_reflns_av_sigmaI/netI    0.0417
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -41
_diffrn_reflns_number            21420
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.84
_exptl_absorpt_coefficient_mu    11.079
_exptl_absorpt_correction_T_max  0.087
_exptl_absorpt_correction_T_min  0.063
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            COLORLESS
_exptl_crystal_density_diffrn    2.114
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             5048
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.22
_refine_diff_density_max         1.415
_refine_diff_density_min         -1.816
_refine_diff_density_rms         0.136
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     497
_refine_ls_number_reflns         7461
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0535
_refine_ls_R_factor_gt           0.0361
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0398P)^2^+64.5414P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0836
_refine_ls_wR_factor_ref         0.0910
_reflns_number_gt                5797
_reflns_number_total             7465
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce25365h.txt
_cod_data_source_block           090319a
_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.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN'
changed to 'multi-scan' 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 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'NONE' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        8451.0(10)
_cod_original_sg_symbol_H-M      C2/c
_cod_original_formula_sum        'C40 H38.50 Br4 Hg2 N7.50'
_cod_database_code               7208286