An Intramolecularly Base-Stabilized Diphosphagermylene and Two Unusual Germanium(II) Ate Complexes: A Structural, NMR, and DFT Study
Izod, Keith; McFarlane, William; Allen, Ben; Clegg, William; Harrington, Ross W.; Organometallics 24 (2005) 2157–2167; doi:10.1021/om0501125

data_1100900
_publ_section_title
;
 An Intramolecularly Base-Stabilized Diphosphagermylene and Two Unusual
 Germanium(II) Ate Complexes: A Structural, NMR, and DFT Study
;
_journal_coden_ASTM              ORGND7
_journal_issue                   9
_journal_name_full               Organometallics
_journal_page_first              2157
_journal_page_last               2167
_journal_paper_doi               10.1021/om0501125
_journal_volume                  24
_journal_year                    2005
_chemical_formula_moiety         'C44 H92 Ge I2 Li2 N2 O3 P2 Si4'
_chemical_formula_sum            'C44 H92 Ge I2 Li2 N2 O3 P2 Si4'
_chemical_formula_weight         1211.77
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   48.748(3)
_cell_length_b                   11.2312(6)
_cell_length_c                   11.1410(6)
_cell_measurement_reflns_used    17640
_cell_measurement_temperature    160(2)
_cell_measurement_theta_max      28.41
_cell_measurement_theta_min      2.20
_cell_volume                     6099.7(6)
_diffrn_ambient_temperature      160(2)
_diffrn_detector_area_resol_mean ?
_diffrn_measurement_device_type  'Bruker SMART 1K CCD diffractometer'
_diffrn_measurement_method       'thin-slice \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0481
_diffrn_reflns_av_sigmaI/netI    0.0533
_diffrn_reflns_limit_h_max       65
_diffrn_reflns_limit_h_min       -64
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            49557
_diffrn_reflns_theta_max         28.48
_diffrn_reflns_theta_min         1.67
_diffrn_standards_decay_%        ?
_diffrn_standards_interval_count ?
_diffrn_standards_interval_time  ?
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.679
_exptl_absorpt_correction_T_max  0.730
_exptl_absorpt_correction_T_min  0.680
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.320
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2496
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.052(11)
_refine_ls_extinction_coef       0.00012(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.106
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     561
_refine_ls_number_reflns         14270
_refine_ls_number_restraints     39
_refine_ls_restrained_S_all      1.104
_refine_ls_R_factor_all          0.0581
_refine_ls_R_factor_gt           0.0476
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0329P)^2^+9.7031P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0965
_refine_ls_wR_factor_ref         0.0998
_reflns_number_gt                12469
_reflns_number_total             14270
_reflns_threshold_expression     I>2\s(I)
_cod_database_code               1100900