Flexible cycloalkyl-substituted N-heterocyclic carbenes.
Fortman, George C.; Slawin, Alexandra M. Z.; Nolan, Steven P.; Dalton transactions (Cambridge, England : 2003) 39 (2010) 3923–3930; doi:10.1039/c003214j

data_7025763
_publ_section_title
;
 Flexible cycloalkyl-substituted N-heterocyclic carbenes.
;
_journal_issue                   16
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3923
_journal_page_last               3930
_journal_paper_doi               10.1039/c003214j
_journal_volume                  39
_journal_year                    2010
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C40 H70 N4 Pt'
_chemical_formula_sum            'C40 H70 N4 Pt'
_chemical_formula_weight         802.09
_chemical_name_systematic
;
?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.924(3)
_cell_length_b                   14.532(3)
_cell_length_c                   19.717(4)
_cell_measurement_reflns_used    14175
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      28.8370
_cell_measurement_theta_min      2.3483
_cell_volume                     3703.1(14)
_computing_cell_refinement       'CrystalClear (Rigaku Corp., 2004)'
_computing_data_collection       'CrystalClear (Rigaku Corp., 2004)'
_computing_data_reduction        'CrystalClear (Rigaku Corp., 2004)'
_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      93(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  CCD
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0764
_diffrn_reflns_av_sigmaI/netI    0.0968
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            23569
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.31
_diffrn_reflns_theta_min         2.07
_exptl_absorpt_coefficient_mu    3.822
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.5721
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.439
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             1664
_exptl_crystal_size_max          0.1500
_exptl_crystal_size_mid          0.1500
_exptl_crystal_size_min          0.1500
_refine_diff_density_max         2.330
_refine_diff_density_min         -1.233
_refine_diff_density_rms         0.141
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.006(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     409
_refine_ls_number_reflns         6756
_refine_ls_number_restraints     25
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0486
_refine_ls_R_factor_gt           0.0408
_refine_ls_shift/su_max          0.078
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0141P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0651
_refine_ls_wR_factor_ref         0.0680
_reflns_number_gt                6073
_reflns_number_total             6756
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c003214j.txt
_cod_data_source_block           sngf1
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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        3703.3(14)
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7025763