Neutral "Cp-Free" Silyl-Lanthanide(II) Complexes: Synthesis, Structure, and Bonding Analysis.
Zitz, Rainer; Hlina, Johann; Gatterer, Karl; Marschner, Christoph; Szilvási, Tibor; Baumgartner, Judith; Inorganic chemistry 54 (2015) 7065–7072; doi:10.1021/acs.inorgchem.5b01072

data_4343530
_publ_section_title
;
 Neutral &quot;Cp-Free&quot; Silyl-Lanthanide(II) Complexes: Synthesis,
 Structure, and Bonding Analysis.
;
_journal_issue                   14
_journal_name_full               'Inorganic chemistry'
_journal_page_first              7065
_journal_page_last               7072
_journal_paper_doi               10.1021/acs.inorgchem.5b01072
_journal_volume                  54
_journal_year                    2015
_chemical_formula_sum            'C30 H78 Eu O3 Si8'
_chemical_formula_weight         863.60
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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            4
_cell_length_a                   18.784(6)
_cell_length_b                   15.153(5)
_cell_length_c                   17.125(6)
_cell_measurement_reflns_used    23597
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      52.577
_cell_measurement_theta_min      4.748
_cell_volume                     4874(3)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'SMART APEX''
_diffrn_measurement_method       '\w scans'
_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  0.0393
_diffrn_reflns_av_sigmaI/netI    0.0367
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            32044
_diffrn_reflns_theta_full        26.35
_diffrn_reflns_theta_max         26.35
_diffrn_reflns_theta_min         1.73
_exptl_absorpt_coefficient_mu    1.508
_exptl_absorpt_correction_T_max  0.7837
_exptl_absorpt_correction_T_min  0.6776
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.177
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             1828
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.17
_platon_squeeze_details
;
;
_refine_diff_density_max         1.762
_refine_diff_density_min         -2.586
_refine_diff_density_rms         0.100
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.499(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     398
_refine_ls_number_reflns         9584
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0332
_refine_ls_R_factor_gt           0.0322
_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^)+(0.0561P)^2^+1.0153P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0800
_refine_ls_wR_factor_ref         0.0807
_reflns_number_gt                9243
_reflns_number_total             9584
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5b01072_si_002.cif
_cod_data_source_block           4b_1152j
_cod_depositor_comments
'Adding full bibliography for 4343526--4343531.cif.'
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               4343530