Synthesis of N-heterocyclic carbene rhenium(i) carbonyl complexes.
Chen, Chang-Hung; Liu, Yi-Hung; Peng, Shie-Ming; Chen, Jwu-Ting; Liu, Shiuh-Tzung; Dalton transactions (Cambridge, England : 2003) 41 (2012) 2747–2754; doi:10.1039/c2dt11974a

data_7018209
_publ_section_title
;
 Synthesis of N-heterocyclic carbene rhenium(i) carbonyl complexes.
;
_journal_issue                   9
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2747
_journal_page_last               2754
_journal_paper_doi               10.1039/c2dt11974a
_journal_volume                  41
_journal_year                    2012
_chemical_formula_sum            'C25 H24 Br N2 O4 Re'
_chemical_formula_weight         682.57
_chemical_name_systematic
;
?
;
_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_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                 100.798(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.6499(4)
_cell_length_b                   17.6537(4)
_cell_length_c                   8.6473(2)
_cell_measurement_reflns_used    8960
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      28.7324
_cell_measurement_theta_min      3.0207
_cell_volume                     2646.67(11)
_computing_cell_refinement       'Bruker FRAMBO'
_computing_data_collection       'Bruker FRAMBO'
_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      295(2)
_diffrn_measured_fraction_theta_full 0.974
_diffrn_measured_fraction_theta_max 0.974
_diffrn_measurement_device_type  'multiwire proportional'
_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  0.0295
_diffrn_reflns_av_sigmaI/netI    0.0228
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            27091
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.09
_exptl_absorpt_coefficient_mu    6.132
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.25547
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_density_diffrn    1.713
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.812
_refine_diff_density_min         -1.696
_refine_diff_density_rms         0.100
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.978
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     298
_refine_ls_number_reflns         5920
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.978
_refine_ls_R_factor_all          0.0422
_refine_ls_R_factor_gt           0.0338
_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^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1143
_refine_ls_wR_factor_ref         0.1255
_reflns_number_gt                5064
_reflns_number_total             5920
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt11974a.txt
_cod_data_source_block           ic15074
_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.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        2646.67(10)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7018209