A comparison between (a/n-NHC)PdX2(pyridine) and (a/n-NHC)2PdX2 (X = I, Cl) type complexes of abnormal fused-bicyclic imidazo[1,2-a]pyridine based N-heterocyclic carbene (a-NHC) and of normal imidazole based N-heterocyclic carbene (n-NHC) ligands in the Suzuki-Miyaura coupling reactions
Modak, Sudipta; Borah, Suchibrata; Prakasham, A.P.; Shaikh, Mobin M.; Butcher, Raymond J.; Gangwar, Manoj; Ghosh, Prasenjit; Inorganica Chimica Acta 498 (2019) 119090–; doi:10.1016/j.ica.2019.119090

data_1565731
_publ_section_title
;
 A comparison between (a/n-NHC)PdX2(pyridine) and (a/n-NHC)2PdX2
 (X&#x202F;=&#x202F;I, Cl) type complexes of abnormal fused-bicyclic
 imidazo[1,2-a]pyridine based N-heterocyclic carbene (a-NHC) and of normal
 imidazole based N-heterocyclic carbene (n-NHC) ligands in the
 Suzuki-Miyaura coupling reactions
;
_journal_name_full               'Inorganica Chimica Acta'
_journal_page_first              119090
_journal_paper_doi               10.1016/j.ica.2019.119090
_journal_volume                  498
_journal_year                    2019
_chemical_formula_moiety
;
C32 H30 F2 I2 N4 Pd, 3(C H Cl3)
;
_chemical_formula_sum            'C35 H33 Cl9 F2 I2 N4 Pd'
_chemical_formula_weight         1226.90
_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
_audit_creation_method           SHELXL-2018/3
_cell_angle_alpha                90
_cell_angle_beta                 107.1254(14)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.98592(15)
_cell_length_b                   23.4174(3)
_cell_length_c                   16.3999(2)
_cell_measurement_reflns_used    56403
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.1860
_cell_measurement_theta_min      1.9520
_cell_volume                     4399.02(10)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.927
_diffrn_measurement_device_type  'Rigaku Saturn 724 CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0878
_diffrn_reflns_av_unetI/netI     0.0378
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.927
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            92207
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.927
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         31.189
_diffrn_reflns_theta_min         2.060
_diffrn_source                   'fine-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    2.412
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.73239
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            orange-yellow
_exptl_crystal_density_diffrn    1.853
_exptl_crystal_description       prism
_exptl_crystal_F_000             2376
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.06
_refine_diff_density_max         3.760
_refine_diff_density_min         -3.067
_refine_diff_density_rms         0.157
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     595
_refine_ls_number_reflns         13216
_refine_ls_number_restraints     379
_refine_ls_restrained_S_all      1.147
_refine_ls_R_factor_all          0.0563
_refine_ls_R_factor_gt           0.0475
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0322P)^2^+26.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1046
_refine_ls_wR_factor_ref         0.1079
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                11666
_reflns_number_total             13216
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ICA-2019-498-119090.cif
_cod_data_source_block           4
_cod_original_cell_volume        4399.01(11)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1565731
_shelx_shelxl_version_number     2018/3