Selenium-Containing N-Heterocyclic Carbenes and Their First Palladium(II) Complexes: Synthesis, Structure, and Pendent Alkyl Chain Length Dependent Catalytic Activity for Suzuki‒Miyaura Coupling
Sharma, Kamal Nayan; Joshi, Hemant; Sharma, Alpesh K.; Prakash, Om; Singh, Ajai K.; Organometallics 32 (2013) 2443–; doi:10.1021/om400148c

data_4080632
_publ_section_title
;
 Selenium-Containing N-Heterocyclic Carbenes and Their First Palladium(II)
 Complexes: Synthesis, Structure, and Pendent Alkyl Chain Length Dependent
 Catalytic Activity for Suzuki--Miyaura Coupling
;
_journal_issue                   8
_journal_name_full               Organometallics
_journal_page_first              2443
_journal_paper_doi               10.1021/om400148c
_journal_volume                  32
_journal_year                    2013
_chemical_formula_moiety         'C19 H28 Cl2 N2 Pd Se'
_chemical_formula_sum            'C19 H28 Cl2 N2 Pd Se'
_chemical_formula_weight         540.69
_chemical_name_systematic
; 
 ? 
;
_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                 106.613(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.530(6)
_cell_length_b                   8.252(2)
_cell_length_c                   14.644(4)
_cell_measurement_reflns_used    5864
_cell_measurement_temperature    195(2)
_cell_measurement_theta_max      23.67
_cell_measurement_theta_min      2.25
_cell_volume                     2145.7(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      195(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0822
_diffrn_reflns_av_sigmaI/netI    0.1048
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            9909
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.29
_exptl_absorpt_coefficient_mu    2.815
_exptl_absorpt_correction_T_max  0.737
_exptl_absorpt_correction_T_min  0.419
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.674
_exptl_crystal_density_meas      1.674
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1080.0
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.450
_refine_diff_density_min         -0.472
_refine_diff_density_rms         0.090
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     230
_refine_ls_number_reflns         3748
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.1158
_refine_ls_R_factor_gt           0.0832
_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^)+(0.0514P)^2^+39.8816P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1690
_refine_ls_wR_factor_ref         0.1840
_reflns_number_gt                2775
_reflns_number_total             3748
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400148c_si_002.cif
_cod_data_source_block           complex2m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        2145.8(11)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4080632