Synthesis and carbene-transfer reactivity of dimeric nickel carbene cations supported by N-heterocyclic carbene ligands
Laskowski, Carl A.; Hillhouse, Gregory L.; Chemical Science 2 (2011) 321–; doi:10.1039/c0sc00464b

data_1515420
_publ_section_title
;
 Synthesis and carbene-transfer reactivity of dimeric nickel carbene
 cations supported by N-heterocyclic carbene ligands
;
_journal_issue                   2
_journal_name_full               'Chemical Science'
_journal_page_first              321
_journal_paper_doi               10.1039/c0sc00464b
_journal_volume                  2
_journal_year                    2011
_chemical_formula_sum            'C74 H69 B F24 N5 Ni'
_chemical_formula_weight         1553.86
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 95.837(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.610(3)
_cell_length_b                   12.8020(15)
_cell_length_c                   30.984(4)
_cell_measurement_temperature    100(2)
_cell_volume                     8132.7(18)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.1713
_diffrn_reflns_av_sigmaI/netI    0.0975
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            77481
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.72
_exptl_absorpt_coefficient_mu    0.335
_exptl_absorpt_correction_T_max  0.9361
_exptl_absorpt_correction_T_min  0.8244
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   'Norton et. al.'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.269
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3188
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.604
_refine_diff_density_min         -0.556
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.999
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     981
_refine_ls_number_reflns         14312
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.999
_refine_ls_R_factor_all          0.0792
_refine_ls_R_factor_gt           0.0555
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0666P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1402
_refine_ls_wR_factor_ref         0.1491
_reflns_number_gt                10220
_reflns_number_total             14312
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0sc00464b.txt
_cod_data_source_block           9
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_cell_volume        8132.8(17)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1515420