Bis(tetrelocenes) - fusing tetrelocenes into close proximity.
Bischoff, Inga-Alexandra; Morgenstern, Bernd; Zimmer, Michael; Koldemir, Aylin; Pöttgen, Rainer; Schäfer, André; Dalton transactions (Cambridge, England : 2003)  (2023) –; doi:10.1039/d3dt02664g

data_7714519
_publ_section_title
;
 Bis(tetrelocenes) - fusing tetrelocenes into close proximity.
;
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_paper_doi               10.1039/d3dt02664g
_journal_year                    2023
_chemical_formula_moiety         '2(C16 H22 Ge Si)'
_chemical_formula_sum            'C32 H44 Ge2 Si2'
_chemical_formula_weight         630.03
_chemical_properties_physical    Air-sensitive,Moisture-sensitive,Hygroscopic
_space_group_crystal_system      monoclinic
_space_group_IT_number           5
_space_group_name_Hall           'C 2y'
_space_group_name_H-M_alt        'C 1 2 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2019/1
_audit_update_record
;
2023-09-14 deposited with the CCDC.	2023-10-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 130.200(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   17.5006(7)
_cell_length_b                   8.6628(3)
_cell_length_c                   13.3527(6)
_cell_measurement_reflns_used    9935
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      32.04
_cell_measurement_theta_min      2.81
_cell_volume                     1546.17(12)
_computing_cell_refinement       'SAINT V8.40A (Bruker Nano, Inc., 2019)'
_computing_data_collection       'APEX 3 (Bruker Nano, Inc., 2019)'
_computing_data_reduction        'SAINT V8.40A (Bruker Nano, Inc., 2019)'
_computing_molecular_graphics    'Diamond, (Brandenburg, K. 2018)'
_computing_publication_material  'SHELXL-2019/1 (Sheldrick, 2019)'
_computing_structure_refinement
;
SHELXL-2019/1 (Sheldrick, 2019)                                              
SHELXLe Rev 1000 (Huebschle et al., 2011)
;
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      133(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker AXS D8 Venture, Photon II'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0249
_diffrn_reflns_av_unetI/netI     0.0273
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            36114
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         32.052
_diffrn_reflns_theta_min         1.997
_diffrn_source                   'INCOATEC I\^A?S microfocus sealed tube'
_exptl_absorpt_coefficient_mu    2.041
_exptl_absorpt_correction_T_max  0.7463
_exptl_absorpt_correction_T_min  0.6492
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D.,
 J. Appl. Cryst. 48 (2015) 3-10
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.353
_exptl_crystal_density_meas      ?
_exptl_crystal_description       cuboid
_exptl_crystal_F_000             656
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: hexane / tetrahydrofurane'
_exptl_crystal_size_max          0.306
_exptl_crystal_size_mid          0.163
_exptl_crystal_size_min          0.128
_refine_diff_density_max         0.279
_refine_diff_density_min         -0.209
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details
;
 Flack x determined using 2428 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.0102(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.081
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     169
_refine_ls_number_reflns         5375
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.081
_refine_ls_R_factor_all          0.0143
_refine_ls_R_factor_gt           0.0139
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0127P)^2^+0.1612P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0371
_refine_ls_wR_factor_ref         0.0372
_reflns_Friedel_coverage         0.885
_reflns_Friedel_fraction_full    0.990
_reflns_Friedel_fraction_max     0.992
_reflns_number_gt                5284
_reflns_number_total             5375
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3dt02664g3.cif
_cod_data_source_block           4472_a
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 8170 2020-07-09 18:12:32Z antanas 
;
_cod_original_cell_volume        1546.17(11)
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               7714519
_shelx_shelxl_version_number     2019/1
_shelx_estimated_absorpt_t_min   0.574
_shelx_estimated_absorpt_t_max   0.780
_shelx_res_checksum              31558