Selectivity of Allenylidene versus Butadienyl Protonation in an Osmium−Bisphosphine System
Bolaño, Tamara; Collado, Alba; Esteruelas, Miguel A.; Oñate, Enrique; Organometallics 28 (2009) 2107–; doi:10.1021/om900059g

data_4069164
_publ_section_title
;
 Selectivity of Allenylidene versus Butadienyl Protonation in an
 Osmium&#x2212;Bisphosphine System
;
_journal_issue                   7
_journal_name_full               Organometallics
_journal_page_first              2107
_journal_paper_doi               10.1021/om900059g
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C75 H82.5 B F24 O2.75 Os P2'
_chemical_formula_weight         1746.86
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 94.223(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.411(4)
_cell_length_b                   27.576(8)
_cell_length_c                   19.601(6)
_cell_measurement_reflns_used    895
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28
_cell_measurement_theta_min      2
_cell_volume                     7768(4)
_computing_cell_refinement       'SAINT+ v. 6.1 (Bruker AXS, 2000)'
_computing_data_collection       'SMART v. 5.625 (Bruker AXS, 2000)'
_computing_data_reduction        'SAINT+ v. 6.1 (Bruker AXS, 2000)'
_computing_molecular_graphics    'XP, SHELXTL v. 6.1 (Bruker, 2000)'
_computing_publication_material  'XCIF, SHELXTL v. 6.1 (Bruker, 2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.26
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker SMART APEX CCD system'
_diffrn_measurement_method       '\w rotations with narrow frames'
_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  0.0723
_diffrn_reflns_av_sigmaI/netI    0.1093
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       -33
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            45438
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.70
_diffrn_standards_decay_%        'no decay'
_exptl_absorpt_coefficient_mu    1.785
_exptl_absorpt_correction_T_max  0.965
_exptl_absorpt_correction_T_min  0.702
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Absorption correction performed with SADABS program. This is based on the
method of Blessing: Blessing, R. H., Acta Crystallogr., Sect. A 1995, 51, 33.

SADABS: Area-Detector Absorption Correction. Bruker-AXS 
within SAINT+ package, v. 6.1 (2000).
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.494
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       neddle
_exptl_crystal_F_000             3526
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.297
_refine_diff_density_min         -1.163
_refine_diff_density_rms         0.130
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     972
_refine_ls_number_reflns         17701
_refine_ls_number_restraints     62
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.1115
_refine_ls_R_factor_gt           0.0586
_refine_ls_shift/su_max          0.035
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0585P)^2^+2.1634P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1228
_refine_ls_wR_factor_ref         0.1402
_reflns_number_gt                11162
_reflns_number_total             17701
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900059g_si_001.cif
_cod_data_source_block           mae360bs
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_original_formula_sum        'C75 H82.50 B F24 O2.75 Os P2'
_cod_database_code               4069164