1,2-Bis(ferrocenyl)digermene: A d−π Electron System Containing a Ge═Ge Unit
Sasamori, Takahiro; Miyamoto, Hisashi; Sakai, Heisuke; Furukawa, Yukio; Tokitoh, Norihiro; Organometallics 31 (2012) 3904–; doi:10.1021/om300064q

data_4083243
_publ_section_title
;
 1,2-Bis(ferrocenyl)digermene: A d&#x2212;\p Electron System Containing a
 Ge&#x2550;Ge Unit
;
_journal_issue                   10
_journal_name_full               Organometallics
_journal_page_first              3904
_journal_paper_doi               10.1021/om300064q
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C50 H64 Fe2 Ge2'
_chemical_formula_sum            'C50 H64 Fe2 Ge2'
_chemical_formula_weight         921.89
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                68.8974(10)
_cell_angle_beta                 72.1442(13)
_cell_angle_gamma                67.528(3)
_cell_formula_units_Z            1
_cell_length_a                   9.5444(3)
_cell_length_b                   10.8780(2)
_cell_length_c                   13.1100(3)
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      25.5
_cell_measurement_theta_min      2.64
_cell_volume                     1150.66(5)
_computing_cell_refinement       HKL2000
_computing_data_collection       CrystalClear
_computing_data_reduction        HKL2000
_computing_molecular_graphics
'Yadokari-XG 2009 (Wakita Nemoto et al., 2009)'
_computing_publication_material
'Yadokari-XG 2009 (Wakita,Nemoto et al., 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      103(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'Rigaku VariMax Saturn'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'rotating-anode X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0277
_diffrn_reflns_av_sigmaI/netI    0.0321
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            9782
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.64
_exptl_absorpt_coefficient_mu    1.943
_exptl_absorpt_correction_T_max  0.9881
_exptl_absorpt_correction_T_min  0.9649
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.330
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             480
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.894
_refine_diff_density_min         -0.568
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    fixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     250
_refine_ls_number_reflns         4191
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0371
_refine_ls_R_factor_gt           0.0342
_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^)+(0.0365P)^2^+1.3312P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0849
_refine_ls_wR_factor_ref         0.0872
_reflns_number_gt                3893
_reflns_number_total             4191
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            compound2.cif
_cod_data_source_block           gefc
_cod_database_code               4083243