Soft Heteroleptic N-Heterocyclic Carbene Palladium(II) Species for Efficient Catalytic Routes to Alkynones via Carbonylative Sonogashira Coupling
Mansour, Waseem; Suleiman, Rami; Fettouhi, Mohammed; El Ali, Bassam; ACS Omega  (2020) –; doi:10.1021/acsomega.0c02413

data_4517965
_publ_section_title
;
 Soft Heteroleptic N-Heterocyclic Carbene Palladium(II) Species for
 Efficient Catalytic Routes to Alkynones via Carbonylative Sonogashira
 Coupling
;
_journal_name_full               'ACS Omega'
_journal_paper_doi               10.1021/acsomega.0c02413
_journal_year                    2020
_chemical_formula_moiety         'C20 H27 N2, Br'
_chemical_formula_sum            'C20 H27 Br N2'
_chemical_formula_weight         375.34
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2016/6
_cell_angle_alpha                90
_cell_angle_beta                 104.481(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.3429(8)
_cell_length_b                   16.4241(13)
_cell_length_c                   10.7998(8)
_cell_measurement_reflns_used    9960
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.483
_cell_measurement_theta_min      2.309
_cell_volume                     1776.3(2)
_computing_cell_refinement       'SAINT V8.38A (Bruker, 2017)'
_computing_data_collection       'Apex3 v2017.3-0 (Bruker, 2017)'
_computing_data_reduction        'SAINT V8.38A (Bruker, 2017)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker AXS D8 Quest diffractometer'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1216
_diffrn_reflns_av_unetI/netI     0.0572
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            69444
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.345
_diffrn_reflns_theta_min         2.382
_diffrn_source                   'Microfocus sealed tube'
_exptl_absorpt_coefficient_mu    2.316
_exptl_absorpt_correction_T_max  0.934
_exptl_absorpt_correction_T_min  0.608
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS. Ver. 2014/5. (Krause et al., 2015)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.404
_exptl_crystal_description       block
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.077
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.326
_refine_diff_density_min         -0.456
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         4412
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.1028
_refine_ls_R_factor_gt           0.0492
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0267P)^2^+1.9140P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0876
_refine_ls_wR_factor_ref         0.1046
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2815
_reflns_number_total             4412
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ao0c02413_si_003.cif
_cod_data_source_block           AD_0m_a
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4517965
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.723
_shelx_estimated_absorpt_t_max   0.934
_shelx_res_checksum              7113
_shelx_hkl_checksum              71554