Preparation of Oligogermanes via the Hydrogermolysis Reaction
Subashi, Esla; Rheingold, Arnold L.; Weinert, Charles S.; Organometallics 25 (2006) 3211–; doi:10.1021/om060115x

data_4075198
_publ_section_title
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 Preparation of Oligogermanes via the Hydrogermolysis Reaction
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_journal_issue                   13
_journal_name_full               Organometallics
_journal_page_first              3211
_journal_paper_doi               10.1021/om060115x
_journal_volume                  25
_journal_year                    2006
_chemical_formula_sum            'C24 H27 Ge2'
_chemical_formula_weight         460.64
_chemical_name_systematic
; 

 NOTE: This is compund 2

;
_space_group_IT_number           148
_symmetry_cell_setting           rhombohedral
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_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                120.00
_cell_formula_units_Z            6
_cell_length_a                   15.5325(13)
_cell_length_b                   15.5325(13)
_cell_length_c                   16.275(3)
_cell_measurement_reflns_used    5404
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      28.03
_cell_measurement_theta_min      2.62
_cell_volume                     3400.4(7)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      213(2)
_diffrn_measured_fraction_theta_full 0.963
_diffrn_measured_fraction_theta_max 0.963
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0327
_diffrn_reflns_av_sigmaI/netI    0.0235
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            8422
_diffrn_reflns_theta_full        28.14
_diffrn_reflns_theta_max         28.14
_diffrn_reflns_theta_min         2.62
_exptl_absorpt_coefficient_mu    2.656
_exptl_absorpt_correction_T_max  0.7771
_exptl_absorpt_correction_T_min  0.5029
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.350
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1410
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.642
_refine_diff_density_min         -0.193
_refine_diff_density_rms         0.085
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.227
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     79
_refine_ls_number_reflns         1790
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.227
_refine_ls_R_factor_all          0.0377
_refine_ls_R_factor_gt           0.0333
_refine_ls_shift/su_max          0.266
_refine_ls_shift/su_mean         0.055
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0560P)^2^+0.2500P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0932
_refine_ls_wR_factor_ref         0.0955
_reflns_number_gt                1574
_reflns_number_total             1790
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om060115xsi20060203_074012.cif
_cod_data_source_block           wein20
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Rhombohedral' changed to
'rhombohedral' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      R-3
_cod_database_code               4075198