Reaction of N-heterocyclic carbenes with 13-vertex closo-carboranes: synthesis and structural characterization of zwitterionic salts of 13-vertex nido-carboranes
Zheng, Fangrui; Xie, Zuowei; Organic Chemistry Frontiers 2 (2015) 55–; doi:10.1039/C4QO00287C

data_1553050
_publ_section_title
;
 Reaction of N-heterocyclic carbenes with 13-vertex closo-carboranes:
 synthesis and structural characterization of zwitterionic salts of
 13-vertex nido-carboranes
;
_journal_issue                   1
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              55
_journal_paper_doi               10.1039/C4QO00287C
_journal_volume                  2
_journal_year                    2015
_chemical_formula_sum            'C32 H53 B11 N2'
_chemical_formula_weight         584.67
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_cell_setting           orthorhombic
_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
_audit_update_record
;
2014-11-03 deposited with the CCDC.
2014-12-10 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   17.5053(19)
_cell_length_b                   20.281(2)
_cell_length_c                   21.1684(18)
_cell_measurement_reflns_used    38
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      15
_cell_volume                     7515.3(13)
_computing_cell_refinement       'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_computing_data_collection       'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_computing_data_reduction        'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_computing_molecular_graphics    'SIEMENS SHELXTL'
_computing_publication_material  'SIEMENS SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_diffrn_measurement_method       'PHI & OMEGA SCAN'
_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  0.2325
_diffrn_reflns_av_sigmaI/netI    0.1375
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            60649
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.25
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    0.055
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6816
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.034
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2512
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.279
_refine_diff_density_min         -0.240
_refine_diff_density_rms         0.041
_refine_ls_extinction_coef       0.0005(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.996
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     411
_refine_ls_number_reflns         6787
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.996
_refine_ls_R_factor_all          0.2374
_refine_ls_R_factor_gt           0.0733
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1001P)^2^+2.1542P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1637
_refine_ls_wR_factor_ref         0.2567
_reflns_number_gt                2329
_reflns_number_total             6787
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4qo00287c2.cif
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        7515.2(13)
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               1553050