A Digermyne with a Ge-Ge Single Bond That Activates Dihydrogen in the Solid State
Jiaye Li; Christian Schenk; Catharina Goedecke; Gernot Frenking; Cameron Jones; Journal of the American Chemical Society 133 (2011) 18622–18625; doi:10.1021/ja209215a

data_4107154
_publ_section_title
;
 A Digermyne with a Ge-Ge Single Bond That Activates Dihydrogen in the
 Solid State
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              18622
_journal_page_last               18625
_journal_paper_doi               10.1021/ja209215a
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'C72 H72 Ge2 N2 Si2'
_chemical_formula_weight         1166.68
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 117.76(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   28.449(6)
_cell_length_b                   9.7420(19)
_cell_length_c                   24.138(5)
_cell_measurement_temperature    100(2)
_cell_volume                     5920(3)
_computing_cell_refinement       'XDS (Kabsch, 1993)'
_computing_data_collection       'Blu-Ice (McPhillips, 2002)'
_computing_data_reduction        'XDS (Kabsch, 1993)'
_computing_molecular_graphics    X-Seed
_computing_publication_material  CifTAB
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'ADSC Quantum 210r'
_diffrn_radiation_source         'Australian Synchrotron'
_diffrn_radiation_type           Synchrotron
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0288
_diffrn_reflns_av_sigmaI/netI    0.0145
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       -36
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            44472
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    1.101
_exptl_absorpt_correction_T_max  0.9783
_exptl_absorpt_correction_T_min  0.9573
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   XDS
_exptl_crystal_colour            orange-pink
_exptl_crystal_density_diffrn    1.309
_exptl_crystal_description       block
_exptl_crystal_F_000             2440
_exptl_crystal_size_max          0.04
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.318
_refine_diff_density_min         -1.432
_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     356
_refine_ls_number_reflns         6430
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0464
_refine_ls_R_factor_gt           0.0444
_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^)+(0.0411P)^2^+25.1743P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1056
_refine_ls_wR_factor_ref         0.1069
_reflns_number_gt                6110
_reflns_number_total             6430
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja209215a_si_002.cif
_cod_data_source_block           compound2
_cod_original_cell_volume        5920(2)
_cod_database_code               4107154