2-Azetidinones as Precursors of Pincer Ligands: Preparation, Structure, and Spectroscopic Properties of CC'N-Osmium Complexes.
Casarrubios, Luis; Esteruelas, Miguel A.; Larramona, Carmen; Muntaner, Jaime G.; Oñate, Enrique; Sierra, Miguel A.; Inorganic chemistry 54 (2015) 10998–11006; doi:10.1021/acs.inorgchem.5b02138

data_4346784
_publ_section_title
;
 2-Azetidinones as Precursors of Pincer Ligands: Preparation, Structure,
 and Spectroscopic Properties of CC'N-Osmium Complexes.
;
_journal_issue                   22
_journal_name_full               'Inorganic chemistry'
_journal_page_first              10998
_journal_page_last               11006
_journal_paper_doi               10.1021/acs.inorgchem.5b02138
_journal_volume                  54
_journal_year                    2015
_chemical_formula_sum            'C35 H62 B F4 N O2 Os P2'
_chemical_formula_weight         867.81
_space_group_IT_number           11
_space_group_name_Hall           '-P 2yb'
_space_group_name_H-M_alt        'P 1 21/m 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/m 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                 104.647(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.6959(12)
_cell_length_b                   12.9629(17)
_cell_length_c                   17.039(2)
_cell_measurement_reflns_used    6120
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28
_cell_measurement_theta_min      2
_cell_volume                     1858.3(4)
_computing_cell_refinement       'SAINT+ v. 7.56a (Bruker AXS, 2008)'
_computing_data_collection       'apex2 v. 7.0 (Bruker AXS, 2009)'
_computing_data_reduction        'SAINT+ v. 7.56a (Bruker AXS, 2008)'
_computing_molecular_graphics    'XP, SHELXTL v. 6.14 (Bruker, 2000)'
_computing_publication_material  'XCIF, SHELXTL v. 6.14 (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 8.33
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.936
_diffrn_measurement_device_type  'Bruker 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  0.0433
_diffrn_reflns_av_sigmaI/netI    0.0415
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            19216
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         29.55
_diffrn_reflns_theta_min         1.24
_exptl_absorpt_coefficient_mu    3.569
_exptl_absorpt_correction_T_max  0.862
_exptl_absorpt_correction_T_min  0.685
_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. 7.56a (2008).
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.551
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular block'
_exptl_crystal_F_000             884
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.818
_refine_diff_density_min         -0.983
_refine_diff_density_rms         0.136
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     240
_refine_ls_number_reflns         5054
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0366
_refine_ls_R_factor_gt           0.0312
_refine_ls_shift/su_max          0.026
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0399P)^2^+1.1496P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0738
_refine_ls_wR_factor_ref         0.0763
_reflns_number_gt                4553
_reflns_number_total             5054
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5b02138_si_001.cif
_cod_data_source_block           5-enriquen62p21m
_cod_original_sg_symbol_H-M      P21/m
_cod_database_code               4346784