1,3,5-Triaryl 2-pyridylidene: base-promoted generation and complexation
Kazuhiro Hata; Yasutomo Segawa; Kenichiro Itami; Chem.Commun. 48 (2012) 6642–; doi:10.1039/c2cc33184e

data_7107929
_publ_section_title
;
 1,3,5-Triaryl 2-pyridylidene: base-promoted generation and complexation
;
_journal_name_full               Chem.Commun.
_journal_page_first              6642
_journal_paper_doi               10.1039/c2cc33184e
_journal_volume                  48
_journal_year                    2012
_chemical_formula_sum            'C21 H21 N'
_chemical_formula_weight         287.39
_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                 101.272(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.283(3)
_cell_length_b                   8.3330(14)
_cell_length_c                   15.160(3)
_cell_measurement_reflns_used    4295
_cell_measurement_temperature    123.1500
_cell_measurement_theta_max      27.4899
_cell_measurement_theta_min      3.0758
_cell_volume                     1645.7(6)
_computing_cell_refinement       'RIGAKU CrystalClear'
_computing_data_collection       'RIGAKU CrystalClear'
_computing_data_reduction        'RIGAKU CrystalClear'
_computing_molecular_graphics    ORTEP-III
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR-97
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type
;
Saturn70 CCD (4x4 bin mode) with MicroMax-007
;
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0288
_diffrn_reflns_av_sigmaI/netI    0.0268
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            10602
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.08
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.160
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.154
_refine_diff_density_min         -0.167
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         2878
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0495
_refine_ls_R_factor_gt           0.0414
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0532P)^2^+0.4341P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0988
_refine_ls_wR_factor_ref         0.1040
_reflns_number_gt                2441
_reflns_number_total             2878
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc33184e.txt
_cod_data_source_block           compound1
_cod_original_cell_volume        1645.6(5)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7107929