Specific insertion reactions of a germylene, stannylene and plumbylene into the unique P–P bond of the hexaphospha-pentaprismane cage, P6C4tBu4: Crystal and molecular structures of P6C4tBu4ER2 (E = Ge, Sn, R = N(SiMe3)2; E = Pb, R = (C6H3(NMe2)2 -2,6)
Al-Ktaifani, Mahmoud M.; Hitchcock, Peter B.; Lappert, Michael F.; Nixon, John F.; Uiterweerd, Philip; Dalton Transactions  (2008) 2825–2831; doi:10.1039/b800458g

data_7003834
_publ_section_title
;
 Specific insertion reactions of a germylene, stannylene and plumbylene
 into the unique P--P bond of the hexaphospha-pentaprismane cage,
 P6C4tBu4: Crystal and molecular structures of P6C4tBu4ER2 (E = Ge, Sn,
 R = N(SiMe3)2; E = Pb, R = (C6H3(NMe2)2 -2,6)
;
_journal_issue                   21
_journal_name_full               'Dalton Transactions'
_journal_page_first              2825
_journal_page_last               2831
_journal_paper_doi               10.1039/b800458g
_journal_year                    2008
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C32 H72 Ge N2 P6 Si4'
_chemical_formula_sum            'C32 H72 Ge N2 P6 Si4'
_chemical_formula_weight         855.69
_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_conform_dict_location     ftp://ftp.iucr.org/cifdics/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.1
_audit_creation_date             2001-03-09T09:53:23-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                82.831(2)
_cell_angle_beta                 69.414(2)
_cell_angle_gamma                65.093(2)
_cell_formula_units_Z            6
_cell_length_a                   18.0331(4)
_cell_length_b                   18.1166(5)
_cell_length_c                   24.3208(7)
_cell_measurement_reflns_used    29464
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.028
_cell_measurement_theta_min      3.705
_cell_measurement_wavelength     0.71073
_cell_volume                     6743.9(3)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0634
_diffrn_reflns_av_unetI/netI     0.0966
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            46958
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         3.71
_exptl_absorpt_coefficient_mu    1.026
_exptl_absorpt_correction_T_max  0.931
_exptl_absorpt_correction_T_min  0.838
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.264
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2736
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.421
_refine_diff_density_min         -0.428
_refine_diff_density_rms         0.092
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1222
_refine_ls_number_reflns         23675
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.0919
_refine_ls_R_factor_gt           0.0519
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0221P)^2^+12.4804P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0926
_refine_ls_wR_factor_ref         0.1072
_reflns_number_gt                16354
_reflns_number_total             23675
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b800458g.txt
_cod_data_source_block           feb3601
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7003834