Unusual Reactivity of Methylphosphaalkyne (P\τbCMe) toward Digermenes and Distannenes: Stepwise Formations of Bridged 2,3,5,6-Tetraphospha-1,4-dimethylidenecyclohexanes
Cameron Jones; Christian Schulten; Andreas Stasch; Inorganic Chemistry 47 (2008) 1273–1278; doi:10.1021/ic700926u

data_4303989
_publ_section_title
;
Unusual Reactivity of Methylphosphaalkyne (P\\tbCMe) toward Digermenes and
Distannenes: Stepwise Formations of Bridged
2,3,5,6-Tetraphospha-1,4-dimethylidenecyclohexanes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              1273
_journal_page_last               1278
_journal_paper_doi               10.1021/ic700926u
_journal_volume                  47
_journal_year                    2008
_chemical_formula_sum            'C36 H88 P4 Si8 Sn2'
_chemical_formula_weight         1107.04
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 96.38(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.726(3)
_cell_length_b                   16.959(3)
_cell_length_c                   11.860(2)
_cell_measurement_temperature    150(2)
_cell_volume                     2743.7(9)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0610
_diffrn_reflns_av_sigmaI/netI    0.0935
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            8895
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.96
_exptl_absorpt_coefficient_mu    1.225
_exptl_absorpt_correction_T_max  0.975
_exptl_absorpt_correction_T_min  0.858
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sortav (Blessing, 1995)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.340
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1152
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.652
_refine_diff_density_min         -0.447
_refine_diff_density_rms         0.107
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     239
_refine_ls_number_reflns         4766
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0872
_refine_ls_R_factor_gt           0.0506
_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^)+(0.0194P)^2^+1.9288P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0796
_refine_ls_wR_factor_ref         0.0879
_reflns_number_gt                3384
_reflns_number_total             4766
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic700926u-file001_2.cif
_cod_data_source_block           compound8
_cod_original_cell_volume        2743.5(9)
_cod_database_code               4303989