Synthesis and reactivity of triethylborane adduct of N-heterocyclic carbene: versatile synthons for synthesis of N-heterocyclic carbene complexes
Yamaguchi, Yoshitaka; Kashiwabara, Taigo; Ogata, Kenichi; Miura, Yumiko; Nakamura, Yoshiyuki; Kobayashi, Kimiko; Ito, Takashi; Chemical Communications  (2004) 2160–2161; doi:10.1039/b405459h

data_7111321
_publ_section_title
;
 Synthesis and reactivity of triethylborane adduct of N-heterocyclic
 carbene: versatile synthons for synthesis of N-heterocyclic carbene
 complexes
;
_journal_issue                   19
_journal_name_full               'Chemical Communications'
_journal_page_first              2160
_journal_page_last               2161
_journal_paper_doi               10.1039/b405459h
_journal_year                    2004
_chemical_formula_moiety         'C15 H31 B N2 '
_chemical_formula_sum            'C15 H31 B N2'
_chemical_formula_weight         250.23
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      62
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_audit_creation_date             'Thu Feb 19 20:15:17 2004'
_audit_creation_method           'by teXsan'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.033(8)
_cell_length_b                   9.904(8)
_cell_length_c                   10.58(1)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    223.2
_cell_measurement_theta_max      14.9
_cell_measurement_theta_min      12.8
_cell_volume                     1680(2)
_computing_cell_refinement       'MSC/AFC Diffractometer Control'
_computing_data_collection       'MSC/AFC Diffractometer Control'
_computing_data_reduction        'teXsan Ver. 1.11'
_computing_publication_material  'teXsan Ver. 1.11'
_computing_structure_refinement  'teXsan Ver. 1.10'
_computing_structure_solution    SIR92
_diffrn_measured_fraction_theta_full 0.9989
_diffrn_measured_fraction_theta_max 0.9989
_diffrn_measurement_device_type  'Rigaku AFC7R'
_diffrn_measurement_method       \w-2\q
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.066
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            2788
_diffrn_reflns_theta_full        26.25
_diffrn_reflns_theta_max         26.25
_diffrn_standards_decay_%        2.85
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.056
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    0.989
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.250
_exptl_crystal_size_min          0.080
_refine_diff_density_max         0.20
_refine_diff_density_min         -0.42
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.653
_refine_ls_number_parameters     140
_refine_ls_number_reflns         1754
_refine_ls_R_factor_gt           0.0823
_refine_ls_shift/su_max          0.0215
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^) + (0.05000(Max(Fo^2^,0) + 2Fc^2^)/3)^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.2122
_reflns_number_gt                901
_reflns_number_total             1791
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            b405459hsup1.cif
_cod_data_source_block           YAMA2a_IiPrBEt3
_cod_original_sg_symbol_H-M      Pnma
_cod_original_formula_sum        'C15 H31 B N2 '
_cod_database_code               7111321