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_7025764
_publ_section_title
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 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_formula_moiety         'C36 H62 N4 Pt'
_chemical_formula_sum            'C36 H62 N4 Pt'
_chemical_formula_weight         745.99
_chemical_name_systematic
;
?
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   19.481(4)
_cell_length_b                   15.267(3)
_cell_length_c                   22.882(5)
_cell_measurement_reflns_used    14672
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      28.8199
_cell_measurement_theta_min      2.0643
_cell_volume                     6805(2)
_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 1.000
_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  0.1494
_diffrn_reflns_av_sigmaI/netI    0.1162
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            41103
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.32
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    4.153
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6941
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.456
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Platelet
_exptl_crystal_F_000             3072
_exptl_crystal_size_max          0.1000
_exptl_crystal_size_mid          0.1000
_exptl_crystal_size_min          0.0100
_refine_diff_density_max         2.481
_refine_diff_density_min         -1.449
_refine_diff_density_rms         0.170
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     373
_refine_ls_number_reflns         6210
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.1082
_refine_ls_R_factor_gt           0.0582
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0246P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1034
_refine_ls_wR_factor_ref         0.1191
_reflns_number_gt                3968
_reflns_number_total             6210
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c003214j.txt
_cod_data_source_block           sngf2
_cod_depositor_comments
;
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        6806(2)
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7025764