On the Bonding in N-Heterocyclic Carbene Complexes of Germanium(II)
Ruddy, Adam J.; Rupar, Paul A.; Bladek, Kamila J.; Allan, Christopher J.; Avery, Jessica C.; Baines, Kim M.; Organometallics 29 (2010) 1362–; doi:10.1021/om900977g

data_4067487
_publ_section_title
;
 On the Bonding in N-Heterocyclic Carbene Complexes of Germanium(II)
;
_journal_issue                   6
_journal_name_full               Organometallics
_journal_page_first              1362
_journal_paper_doi               10.1021/om900977g
_journal_volume                  29
_journal_year                    2010
_chemical_formula_sum            'C25 H34 Ge N2'
_chemical_formula_weight         435.13
_chemical_properties_physical    air-sensitive
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      61
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   14.350(3)
_cell_length_b                   16.739(3)
_cell_length_c                   19.434(4)
_cell_measurement_temperature    150(2)
_cell_volume                     4668.1(16)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1997-2001)'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    'SHELXTL/PC (Sheldrick, 2001)'
_computing_publication_material  SHELXTL/PC
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Nonius Kappa-CCD'
_diffrn_measurement_method       '\f scans, and \w scans with \k offsets'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0709
_diffrn_reflns_av_sigmaI/netI    0.0628
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            17476
_diffrn_reflns_theta_full        27.55
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         2.14
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    1.324
_exptl_absorpt_correction_T_max  0.8519
_exptl_absorpt_correction_T_min  0.5573
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO-SMN (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.238
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1840
_exptl_crystal_recrystallization_method benzene/pentane
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.493
_refine_diff_density_min         -0.753
_refine_diff_density_rms         0.086
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     263
_refine_ls_number_reflns         5345
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0984
_refine_ls_R_factor_gt           0.0503
_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^)+(0.0722P)^2^+0.6433P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1169
_refine_ls_wR_factor_ref         0.1367
_reflns_number_gt                3422
_reflns_number_total             5345
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900977g_si_001.cif
_cod_data_source_block           compound12
_cod_original_cell_volume        4668.3(16)
_cod_database_code               4067487