Group 4 Metallocene Complexes of Tris(trimethylsilyl)silylacetylene and Related Alkynes
Zirngast, Michaela; Marschner, Christoph; Baumgartner, Judith; Organometallics 27 (2008) 2570–; doi:10.1021/om800038h

data_4071212
_publ_section_title
;
 Group 4 Metallocene Complexes of Tris(trimethylsilyl)silylacetylene and
 Related Alkynes
;
_journal_issue                   11
_journal_name_full               Organometallics
_journal_page_first              2570
_journal_paper_doi               10.1021/om800038h
_journal_volume                  27
_journal_year                    2008
_chemical_formula_sum            'C54 H84 Si8 Zr2'
_chemical_formula_weight         1140.37
_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                 105.34(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   16.088(3)
_cell_length_b                   10.731(2)
_cell_length_c                   17.823(4)
_cell_measurement_reflns_used    11128
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26
_cell_measurement_theta_min      2
_cell_volume                     2967.3(11)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'SMART APEX'
_diffrn_measurement_method       '\w 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  0.0583
_diffrn_reflns_av_sigmaI/netI    0.0402
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            23040
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         1.52
_exptl_absorpt_coefficient_mu    0.545
_exptl_absorpt_correction_T_max  0.9227
_exptl_absorpt_correction_T_min  0.8535
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   XPREP
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.276
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1200
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.845
_refine_diff_density_min         -0.492
_refine_diff_density_rms         0.091
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.232
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     302
_refine_ls_number_reflns         6050
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.232
_refine_ls_R_factor_all          0.0541
_refine_ls_R_factor_gt           0.0496
_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^)+(0.0339P)^2^+4.3288P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1065
_refine_ls_wR_factor_ref         0.1084
_reflns_number_gt                5706
_reflns_number_total             6050
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om800038h-file001.cif
_cod_data_source_block           7_513j
_cod_original_cell_volume        2967.4(10)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4071212