A Cyclopentadienide Analogue Containing Divalent Germanium and a Heavy Cyclobutadiene-like Dianion with an Unusual Ge4 Core
Wenyuan Wang; Shenglai Yao; Christoph van Wüllen; Matthias Driess; Journal of the American Chemical Society 130 (2008) 9640–9641; doi:10.1021/ja802502b

data_4108118
_publ_contact_author_address
;Technische Universitaet Berlin
Institute of Chemistry: Metalorganics and Inorganic Materials 
Sekretariat C2  Strasse des 17. Juni 135
10623 Berlin Germany
;
_publ_contact_author_email       matthias.driess@tu-berlin.de
_publ_contact_author_fax         +49(0)30-314-29732
_publ_contact_author_name        'Matthias Driess'
_publ_contact_author_phone       +49(0)30-314-29731
_publ_section_title
;
 A Cyclopentadienide Analogue Containing Divalent Germanium and a Heavy
 Cyclobutadiene-like Dianion with an Unusual Ge4 Core
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9640
_journal_page_last               9641
_journal_paper_doi               10.1021/ja802502b
_journal_volume                  130
_journal_year                    2008
_chemical_formula_sum            'C41 H59 Ge N3'
_chemical_formula_weight         666.50
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_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
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.5 (release 08-05-2007 CrysAlis171 .NET)
(compiled May  8 2007,13:10:02)
;
_cell_angle_alpha                100.360(5)
_cell_angle_beta                 101.854(5)
_cell_angle_gamma                98.627(5)
_cell_formula_units_Z            2
_cell_length_a                   9.1129(6)
_cell_length_b                   11.3531(7)
_cell_length_c                   19.0282(10)
_cell_measurement_reflns_used    3594
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.6852
_cell_measurement_theta_min      2.9577
_cell_volume                     1859.2(2)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.5 (release 08-05-2007 CrysAlis171 .NET)
(compiled May  8 2007,13:10:02)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.32.5 (release 08-05-2007 CrysAlis171 .NET)
(compiled May  8 2007,13:10:02)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.5 (release 08-05-2007 CrysAlis171 .NET)
(compiled May  8 2007,13:10:02)
;
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur S Sapphire'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0560
_diffrn_reflns_av_sigmaI/netI    0.1969
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            14570
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.97
_exptl_absorpt_coefficient_mu    0.855
_exptl_absorpt_correction_T_max  0.943
_exptl_absorpt_correction_T_min  0.777
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.5 (release 08-05-2007 CrysAlis171 .NET)
(compiled May  8 2007,13:10:02)
empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.191
_exptl_crystal_description       rod
_exptl_crystal_F_000             716
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.577
_refine_diff_density_min         -0.317
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.785
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     420
_refine_ls_number_reflns         6543
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.785
_refine_ls_R_factor_all          0.0853
_refine_ls_R_factor_gt           0.0399
_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^)+(0.0108P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0513
_refine_ls_wR_factor_ref         0.0566
_reflns_number_gt                3440
_reflns_number_total             6543
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja802502b-file002.cif
_cod_data_source_block           compound3
_cod_original_cell_volume        1859.18(19)
_cod_database_code               4108118