Unusual reactivities of N-heterocyclic carbenes upon coordination to the platinum(II)-dimethyl moiety.
Fortman, George C; Scott, Natalie M; Linden, Anthony; Stevens, Edwin D; Dorta, Reto; Nolan, Steven P; Chemical communications (Cambridge, England) 46 (2010) 1050–1052; doi:10.1039/b920482b

data_7105239
_publ_section_title
;
 Unusual reactivities of N-heterocyclic carbenes upon coordination to
 the platinum(II)-dimethyl moiety.
;
_journal_issue                   7
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              1050
_journal_page_last               1052
_journal_paper_doi               10.1039/b920482b
_journal_volume                  46
_journal_year                    2010
_chemical_formula_sum            'C54 H72 N4 Pt'
_chemical_formula_weight         972.25
_chemical_name_common            ((IPr)2Pt)
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 92.1840(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.8035(7)
_cell_length_b                   26.9007(16)
_cell_length_c                   14.1517(8)
_cell_measurement_reflns_used    27182
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.525
_cell_measurement_theta_min      2.089
_cell_volume                     4870.6(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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      150(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_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  0.0478
_diffrn_reflns_av_sigmaI/netI    0.0291
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            63794
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         1.76
_exptl_absorpt_coefficient_mu    2.919
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.439121
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.326
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2008
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         2.898
_refine_diff_density_min         -1.129
_refine_diff_density_rms         0.133
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.296
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     548
_refine_ls_number_reflns         10593
_refine_ls_number_restraints     531
_refine_ls_restrained_S_all      1.279
_refine_ls_R_factor_all          0.0584
_refine_ls_R_factor_gt           0.0475
_refine_ls_shift/su_max          0.017
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0277P)^2^+31.5919P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1158
_refine_ls_wR_factor_ref         0.1185
_reflns_number_gt                8818
_reflns_number_total             10593
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b920482b.txt
_cod_data_source_block           nol305m
_cod_depositor_comments
;
The following automatic conversions were performed:
'_exptl_absorpt_correction_type' value 'Empirical' changed to 'empirical'
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      P2(1)/n
_cod_database_code               7105239