POP-Pincer Osmium-Polyhydrides: Head-to-Head (Z)-Dimerization of Terminal Alkynes
Joaquín Alós; Tamara Bolaño; Miguel A. Esteruelas; Montserrat Oliván; Enrique Oñate; Marta Valencia; Inorganic Chemistry 52 (2013) 6199–6213; doi:10.1021/ic400730a

data_4334978
_publ_contact_author
;
  Dr. Enrique O\~nate 
  Departamento de Qu\'imica Inorg\'anica - ISQCH
  Facultad de Ciencias
  Universidad de Zaragoza - CSIC
  50009 Zaragoza, Spain
;
_publ_contact_author_email       enriqueo@unizar.es
_publ_section_title
;
 POP-Pincer Osmium-Polyhydrides: Head-to-Head (Z)-Dimerization of Terminal
 Alkynes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              6199
_journal_page_last               6213
_journal_paper_doi               10.1021/ic400730a
_journal_volume                  52
_journal_year                    2013
_chemical_formula_sum            'C27 H44 O Os P2'
_chemical_formula_weight         636.76
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            32
_cell_length_a                   22.5833(14)
_cell_length_b                   21.4733(14)
_cell_length_c                   45.431(3)
_cell_measurement_reflns_used    9190
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27
_cell_measurement_theta_min      2
_cell_volume                     22031(2)
_computing_cell_refinement       'SAINT+ v. 6.02 (Bruker AXS, 1999)'
_computing_data_collection       'SMART v. 5.625 (Bruker AXS, 2000)'
_computing_data_reduction        'SAINT+ v. 6.02 (Bruker AXS, 1999)'
_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 0.996
_diffrn_measured_fraction_theta_max 0.944
_diffrn_measurement_device_type  'Bruker SMART APEX CCD system'
_diffrn_measurement_method       '\w rotations with narrow frames'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1007
_diffrn_reflns_av_sigmaI/netI    0.0708
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       61
_diffrn_reflns_limit_l_min       -60
_diffrn_reflns_number            195878
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         28.63
_diffrn_reflns_theta_min         1.59
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    4.763
_exptl_absorpt_correction_T_max  0.862
_exptl_absorpt_correction_T_min  0.527
_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.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.536
_exptl_crystal_description       'irregular block'
_exptl_crystal_F_000             10240
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.06
_refine_diff_density_max         2.340
_refine_diff_density_min         -1.860
_refine_diff_density_rms         0.172
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1206
_refine_ls_number_reflns         26702
_refine_ls_number_restraints     20
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.0920
_refine_ls_R_factor_gt           0.0377
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0196P)^2^+53.1236P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0611
_refine_ls_wR_factor_ref         0.0750
_reflns_number_gt                17287
_reflns_number_total             26702
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic400730a_si_002_4.cif
_cod_data_source_block           enrique56as
_cod_database_code               4334978