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_4303991
_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            'C23 H44 Ge O5 P2 Si4 W'
_chemical_formula_weight         831.32
_chemical_name_systematic
; 
 ? 
;
_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           SHELXL-97
_cell_angle_alpha                99.46(3)
_cell_angle_beta                 100.06(3)
_cell_angle_gamma                100.66(3)
_cell_formula_units_Z            2
_cell_length_a                   9.836(2)
_cell_length_b                   11.780(2)
_cell_length_c                   16.021(3)
_cell_measurement_temperature    150(2)
_cell_volume                     1758.7(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0224
_diffrn_reflns_av_sigmaI/netI    0.0362
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            15783
_diffrn_reflns_theta_full        28.00
_diffrn_reflns_theta_max         28.00
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    4.377
_exptl_absorpt_correction_T_max  0.559
_exptl_absorpt_correction_T_min  0.386
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sortav (Blessing, 1995)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.570
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             828
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.572
_refine_diff_density_min         -1.282
_refine_diff_density_rms         0.095
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     339
_refine_ls_number_reflns         8421
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0257
_refine_ls_R_factor_gt           0.0233
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0101P)^2^+1.9207P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0502
_refine_ls_wR_factor_ref         0.0513
_reflns_number_gt                7942
_reflns_number_total             8421
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic700926u-file001_4.cif
_cod_data_source_block           compound14
_cod_original_cell_volume        1758.9(6)
_cod_database_code               4303991