α-Cleavage of Phenyl Groups from GePh3Ligands in Iridium Carbonyl Cluster Complexes. A Mechanism and Its Role in the Synthesis of Bridging Germylene Ligands
Adams, Richard D.; Fang, Fang; Zhang, Qiang; Hall, Michael B.; Trufan, Eszter; Organometallics 31 (2012) 2621–; doi:10.1021/om2007002

data_4077845
_publ_section_title
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 \a-Cleavage of Phenyl Groups from GePh3Ligands in Iridium Carbonyl
 Cluster Complexes. A Mechanism and Its Role in the Synthesis of Bridging
 Germylene Ligands
;
_journal_issue                   7
_journal_name_full               Organometallics
_journal_page_first              2621
_journal_paper_doi               10.1021/om2007002
_journal_volume                  31
_journal_year                    2012
_chemical_formula_sum            'C78 H55 Ge4 Ir3 O6'
_chemical_formula_weight         1955.18
_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                68.9680(10)
_cell_angle_beta                 77.5880(10)
_cell_angle_gamma                76.8700(10)
_cell_formula_units_Z            2
_cell_length_a                   13.9649(4)
_cell_length_b                   15.3595(4)
_cell_length_c                   18.6179(5)
_cell_measurement_reflns_used    5558
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      28.16
_cell_measurement_theta_min      2.25
_cell_volume                     3590.63(17)
_computing_cell_refinement       'SAINT+  V6.45 (Bruker, 2003)'
_computing_data_collection       'SMART V5.632 (Bruker, 2005)'
_computing_data_reduction        'SAINT+  V6.45'
_computing_molecular_graphics    'SHELXTL V6.1 (Sheldrick, 2000)'
_computing_publication_material  'SHELXTL V6.1'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       'omega scans'
_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  0.0618
_diffrn_reflns_av_sigmaI/netI    0.0692
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            44982
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.18
_diffrn_standards_decay_%        <1
_exptl_absorpt_coefficient_mu    7.238
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.734
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS, Bruker, 1997)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.808
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1860
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.953
_refine_diff_density_min         -0.966
_refine_diff_density_rms         0.284
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     790
_refine_ls_number_reflns         12693
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.082
_refine_ls_R_factor_all          0.0739
_refine_ls_R_factor_gt           0.0476
_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^)+(0.0429P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0980
_refine_ls_wR_factor_ref         0.1205
_reflns_number_gt                9484
_reflns_number_total             12693
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om2007002_si_002.cif
_cod_data_source_block           3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4077845