Alkaline Earth Metal‒Carbene Complexes with the Versatile Tridentate 2,6-Bis(3-mesitylimidazol-2-ylidene)pyridine Ligand
Koch, Alexander; Krieck, Sven; Görls, Helmar; Westerhausen, Matthias; Organometallics 36 (2017) 994–; doi:10.1021/acs.organomet.6b00914

data_4087078
_publ_section_title
;
 Alkaline Earth Metal--Carbene Complexes with the Versatile Tridentate
 2,6-Bis(3-mesitylimidazol-2-ylidene)pyridine Ligand
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              994
_journal_paper_doi               10.1021/acs.organomet.6b00914
_journal_volume                  36
_journal_year                    2017
_chemical_formula_moiety         'C33 H37 Ca I2 N5 O'
_chemical_formula_sum            'C33 H37 Ca I2 N5 O'
_chemical_formula_weight         813.56
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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
_cell_angle_beta                 101.671(1)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.9346(2)
_cell_length_b                   15.5692(3)
_cell_length_c                   20.4237(4)
_cell_measurement_reflns_used    24867
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      27.10
_cell_measurement_theta_min      1.97
_cell_volume                     3405.11(11)
_computing_cell_refinement       DENZO
_computing_data_collection       COLLECT
_computing_data_reduction        DENZO
_computing_molecular_graphics    SHELXTL/PC
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      133(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'phi- + omega-scan'
_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  0.0416
_diffrn_reflns_av_sigmaI/netI    0.0312
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            24867
_diffrn_reflns_theta_full        27.10
_diffrn_reflns_theta_max         27.10
_diffrn_reflns_theta_min         1.97
_exptl_absorpt_coefficient_mu    2.030
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6360
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker-AXS, 2002'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.587
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1616
_exptl_crystal_size_max          0.134
_exptl_crystal_size_mid          0.088
_exptl_crystal_size_min          0.084
_refine_diff_density_max         0.436
_refine_diff_density_min         -0.682
_refine_diff_density_rms         0.092
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.153
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     385
_refine_ls_number_reflns         7490
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.153
_refine_ls_R_factor_all          0.0473
_refine_ls_R_factor_gt           0.0359
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0196P)^2^+6.8380P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0719
_refine_ls_wR_factor_ref         0.0759
_reflns_number_gt                6356
_reflns_number_total             7490
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om6b00914_si_001.cif
_cod_data_source_block           FO6003
_cod_depositor_comments
'Adding full bibliography for 4087076--4087082.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4087078