Copper Catalysis for Selective Heterocoupling of Terminal Alkynes.
Su, Lebin; Dong, Jianyu; Liu, Long; Sun, Mengli; Qiu, Renhua; Zhou, Yongbo; Yin, Shuang-Feng; Journal of the American Chemical Society 138 (2016) 12348–12351; doi:10.1021/jacs.6b07984

data_4130941
_publ_section_title
;
 Copper Catalysis for Selective Heterocoupling of Terminal Alkynes.
;
_journal_issue                   38
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12348
_journal_page_last               12351
_journal_paper_doi               10.1021/jacs.6b07984
_journal_volume                  138
_journal_year                    2016
_chemical_formula_sum            'C7 H18 Cl4 Cu N2'
_chemical_formula_weight         335.57
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P n a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.2729(5)
_cell_length_b                   7.7016(2)
_cell_length_c                   12.3179(4)
_cell_measurement_reflns_used    4691
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.0592
_cell_measurement_theta_min      2.9994
_cell_volume                     1354.03(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0319
_diffrn_reflns_av_sigmaI/netI    0.0310
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            7990
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         3.01
_exptl_absorpt_coefficient_mu    2.370
_exptl_absorpt_correction_T_max  0.4825
_exptl_absorpt_correction_T_min  0.4152
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.646
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             684
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.36
_refine_diff_density_max         0.300
_refine_diff_density_min         -0.355
_refine_diff_density_rms         0.067
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.014(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     131
_refine_ls_number_reflns         2313
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0244
_refine_ls_R_factor_gt           0.0225
_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^)+(0.0302P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0538
_refine_ls_wR_factor_ref         0.0550
_reflns_number_gt                2221
_reflns_number_total             2313
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja6b07984_si_002.cif
_cod_data_source_block           140710_zyb14070901_170k
_cod_original_sg_symbol_H-M      Pna21
_cod_database_code               4130941