Transition-Metal Complexes Containing Alkynylsilyl Functionalized η6-Arene Ligands
Hoffmann, Florian; Wagler, Jörg; Roewer, Gerhard; Organometallics 32 (2013) 4531–; doi:10.1021/om400378s

data_4081251
_publ_section_title
;
 Transition-Metal Complexes Containing Alkynylsilyl Functionalized
 \h6-Arene Ligands
;
_journal_issue                   16
_journal_name_full               Organometallics
_journal_page_first              4531
_journal_paper_doi               10.1021/om400378s
_journal_volume                  32
_journal_year                    2013
_chemical_formula_moiety         'C32 H32 Cr Si2'
_chemical_formula_sum            'C32 H32 Cr Si2'
_chemical_formula_weight         524.76
_chemical_melting_point          406
_chemical_name_common
;
bis[(phenylethynyldimethylsilyl)benzene]chromium
;
_chemical_name_systematic
; 
 bis[dimethyl(eta6-phenyl)phenylethinylsilane]chromium(0) 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 94.8300(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.3269(3)
_cell_length_b                   18.2355(6)
_cell_length_c                   8.9612(3)
_cell_measurement_temperature    93(2)
_cell_volume                     1355.88(8)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'ORTEP32 (Farugia)'
_computing_publication_material  'Ciftab (Sheldrick)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      93(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and 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  0.0297
_diffrn_reflns_av_sigmaI/netI    0.0326
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            16664
_diffrn_reflns_theta_full        32.99
_diffrn_reflns_theta_max         32.99
_diffrn_reflns_theta_min         2.70
_exptl_absorpt_coefficient_mu    0.529
_exptl_absorpt_correction_T_max  0.9490
_exptl_absorpt_correction_T_min  0.8280
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.285
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       piece
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.537
_refine_diff_density_min         -0.420
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     160
_refine_ls_number_reflns         5098
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0507
_refine_ls_R_factor_gt           0.0337
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0455P)^2^+0.3184P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0843
_refine_ls_wR_factor_ref         0.0902
_reflns_number_gt                4041
_reflns_number_total             5098
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400378s_si_002.cif
_cod_data_source_block           fh09(compound10)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_Hall     -P2ybc
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4081251