A new chiral di-N-heterocyclic carbene (NHC) cyclophane ligand and its application in palladium enantioselective catalysis.
Jeletic, Matthew S.; Ghiviriga, Ion; Abboud, Khalil A.; Veige, Adam S.; Dalton transactions (Cambridge, England : 2003) 39 (2010) 6392–6394; doi:10.1039/c0dt00268b

data_7026209
_publ_section_title
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 A new chiral di-N-heterocyclic carbene (NHC) cyclophane ligand and its
 application in palladium enantioselective catalysis.
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_journal_issue                   28
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6392
_journal_page_last               6394
_journal_paper_doi               10.1039/c0dt00268b
_journal_volume                  39
_journal_year                    2010
_chemical_formula_sum            'C42 H34 F6 N4 O6 S2'
_chemical_formula_weight         868.85
_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
_audit_update_record
;
2010-03-26 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 115.714(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   31.103(2)
_cell_length_b                   11.8780(9)
_cell_length_c                   28.914(2)
_cell_measurement_reflns_used    353
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.0
_cell_measurement_theta_min      2.0
_cell_volume                     9624.2(12)
_computing_cell_refinement       'Bruker APEX2'
_computing_data_collection       'Bruker APEX2 (Bruker, 2008)'
_computing_data_reduction        'Bruker SAINT (Bruker, 2008)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL (Bruker, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\w 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  0.0453
_diffrn_reflns_av_sigmaI/netI    0.0405
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       -35
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            43338
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.45
_exptl_absorpt_coefficient_mu    0.179
_exptl_absorpt_correction_T_max  0.9832
_exptl_absorpt_correction_T_min  0.9616
_exptl_absorpt_correction_type   numerical
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.199
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needles
_exptl_crystal_F_000             3584
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_platon_squeeze_details
;
;
_refine_diff_density_max         0.863
_refine_diff_density_min         -0.583
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.106
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     529
_refine_ls_number_reflns         8481
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.106
_refine_ls_R_factor_all          0.0806
_refine_ls_R_factor_gt           0.0584
_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^)+(0.0935P)^2^+3.5193P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1628
_refine_ls_wR_factor_ref         0.1724
_reflns_number_gt                5802
_reflns_number_total             8481
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c0dt00268b.txt
_cod_data_source_block           mj29
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        9624.4(12)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7026209