Click-Reagent Version of Sonogashira Coupling Protocol to Conjugated Fluorescent Alkynes with No or Reduced Homocoupling
Subhendu Sekhar Bag; Rajen Kundu; Manas Das; Journal of Organic Chemistry 76 (2011) 2332–2337; doi:10.1021/jo200005n

data_4026170
_publ_section_title
;
 Click-Reagent Version of Sonogashira Coupling Protocol to Conjugated
 Fluorescent Alkynes with No or Reduced Homocoupling
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              2332
_journal_page_last               2337
_journal_paper_doi               10.1021/jo200005n
_journal_volume                  76
_journal_year                    2011
_chemical_formula_moiety         'C26 H19 N'
_chemical_formula_sum            'C26 H19 N'
_chemical_formula_weight         345.42
_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                 99.560(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.5572(4)
_cell_length_b                   7.3756(4)
_cell_length_c                   29.6144(14)
_cell_measurement_reflns_used    2624
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      2.41
_cell_volume                     1843.14(16)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.0
_diffrn_measured_fraction_theta_max 1.0
_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  0.0768
_diffrn_reflns_av_sigmaI/netI    0.0852
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       39
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            18863
_diffrn_reflns_theta_full        28.30
_diffrn_reflns_theta_max         28.30
_diffrn_reflns_theta_min         1.39
_exptl_absorpt_coefficient_mu    0.072
_exptl_absorpt_correction_T_max  0.9920
_exptl_absorpt_correction_T_min  0.9881
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.245
_exptl_crystal_description       plates
_exptl_crystal_F_000             728
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.205
_refine_diff_density_min         -0.171
_refine_diff_density_rms         0.052
_refine_ls_extinction_coef       0.0130(4)
_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   1.061
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     247
_refine_ls_number_reflns         4580
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.061
_refine_ls_R_factor_all          0.1205
_refine_ls_R_factor_gt           0.0432
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0070P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0735
_refine_ls_wR_factor_ref         0.0791
_reflns_number_gt                2740
_reflns_number_total             4580
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo200005n_si_003.cif
_cod_data_source_block           rk-100-a
_cod_original_sg_symbol_H-M      'P 1 21/c 1 '
_cod_database_code               4026170