C2-Symmetric S/C/S ligands based on N-heterocyclic carbenes: a new ligand architecture for asymmetric catalysis
Iglesias-Sigüenza, Javier; Ros, Abel; Díez, Elena; Magriz, Antonio; Vázquez, Arcadio; Álvarez, Eleuterio; Fernández, Rosario; Lassaletta, José M.; Dalton Transactions  (2009) 8485–8488; doi:10.1039/b910846g

data_7002442
_publ_section_title
;
 C2-Symmetric S/C/S ligands based on N-heterocyclic carbenes: a new
 ligand architecture for asymmetric catalysis
;
_journal_coden_ASTM              DTARAF
_journal_issue                   40
_journal_name_full               'Dalton Transactions'
_journal_page_first              8485
_journal_page_last               8488
_journal_paper_doi               10.1039/b910846g
_journal_year                    2009
_chemical_absolute_configuration rmad
_chemical_formula_moiety
;
2(C25 H44 Cl N2 Pd S2), C H2 Cl2, 2(H2 O), 2(Cl)
;
_chemical_formula_sum            'C51 H94 Cl6 N4 O2 Pd2 S4'
_chemical_formula_weight         1349.04
_space_group_IT_number           1
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                84.804(2)
_cell_angle_beta                 82.038(2)
_cell_angle_gamma                61.1510(10)
_cell_formula_units_Z            1
_cell_length_a                   10.2385(4)
_cell_length_b                   10.2705(4)
_cell_length_c                   17.2053(7)
_cell_measurement_reflns_used    9142
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.44
_cell_measurement_theta_min      2.46
_cell_volume                     1568.82(11)
_computing_cell_refinement       'Bruker (2006). APEX 2. Version 2.1.'
_computing_data_collection       'Bruker (2006). APEX 2. Version 2.1.'
_computing_data_reduction        'Bruker (2006). APEX 2. Version 2.1.'
_computing_molecular_graphics    'XP, SHELXTL v. 6.14 (Bruker, 2003)'
_computing_publication_material  'XCIF, SHELXTL v. 6.14 (Bruker, 2003)'
_computing_structure_refinement  'XL, SHELXTL v. 6.14 (Bruker, 2003)'
_computing_structure_solution    'Bruker (2006). APEX 2. Version 2.1.'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.26
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type
;
Bruker-Nonius X8kappa APEX II CCD area detector'
;
_diffrn_measurement_method       'phi and omega scans with narrow frames'
_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  0.0393
_diffrn_reflns_av_sigmaI/netI    0.0349
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            57350
_diffrn_reflns_theta_full        30.56
_diffrn_reflns_theta_max         30.56
_diffrn_reflns_theta_min         1.20
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    1.001
_exptl_absorpt_correction_T_max  0.9242
_exptl_absorpt_correction_T_min  0.8562
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS, Bruker (2006). APEX 2. Version 2.1. Bruker Analytical
X-ray Solutions, Madison, Wisconsin, USA.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.428
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             702
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.08
_refine_diff_density_max         3.079
_refine_diff_density_min         -2.812
_refine_diff_density_rms         0.118
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           fullcycle
_refine_ls_number_parameters     622
_refine_ls_number_reflns         12767
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.0473
_refine_ls_R_factor_gt           0.0414
_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^)+(0.0389P)^2^+4.3320P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0937
_refine_ls_wR_factor_ref         0.0977
_reflns_number_gt                11768
_reflns_number_total             12767
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            B910846G.txt
_cod_data_source_block           ea05607a
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P1
_cod_database_code               7002442