Reactivity of Permethylzirconocene and Permethyltitanocene toward Disubstituted 1,3-Butadiynes: η4- vs η2-Complexation or C-C Coupling with the Permethyltitanocene
Paul-Michael Pellny; Frank G. Kirchbauer; Vladimir V. Burlakov; Wolfgang Baumann; Anke Spannenberg; Uwe Rosenthal; Journal of the American Chemical Society 121 (1999) 8313–8323; doi:10.1021/ja991046z

data_4116515
_publ_section_title
;
 Reactivity of Permethylzirconocene and Permethyltitanocene toward
 Disubstituted 1,3-Butadiynes: \h4- vs \h2-Complexation or C-C Coupling
 with the Permethyltitanocene
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8313
_journal_page_last               8323
_journal_paper_doi               10.1021/ja991046z
_journal_volume                  121
_journal_year                    1999
_chemical_formula_sum            'C30 H48 Si2 Ti'
_chemical_formula_weight         512.76
_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
_cell_angle_alpha                76.36(3)
_cell_angle_beta                 67.09(3)
_cell_angle_gamma                74.46(3)
_cell_formula_units_Z            2
_cell_length_a                   11.237(2)
_cell_length_b                   11.534(2)
_cell_length_c                   13.691(3)
_cell_measurement_reflns_used    5000
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      20
_cell_measurement_theta_min      4
_cell_volume                     1557.3(6)
_computing_cell_refinement       STOE-CELL
_computing_data_collection       STOE-EXPOSE
_computing_data_reduction        STOE-INTEGRATE
_computing_molecular_graphics    XP
_computing_publication_material  SHELXL-93
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measurement_device       STOE-IPDS
_diffrn_measurement_method       'laser scanned imaging plate'
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0476
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            4643
_diffrn_reflns_theta_max         24.27
_diffrn_reflns_theta_min         1.85
_diffrn_standards_interval_time  360
_diffrn_standards_number         50-200
_exptl_absorpt_coefficient_mu    0.367
_exptl_absorpt_correction_type   no
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.093
_exptl_crystal_description       prism
_exptl_crystal_F_000             556
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.350
_refine_diff_density_min         -0.314
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   0.999
_refine_ls_goodness_of_fit_obs   1.067
_refine_ls_matrix_type           full
_refine_ls_number_parameters     298
_refine_ls_number_reflns         4643
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.999
_refine_ls_restrained_S_obs      1.067
_refine_ls_R_factor_all          0.0564
_refine_ls_R_factor_obs          0.0442
_refine_ls_shift/esd_max         -0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0944P)^2^+0.0247P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1355
_refine_ls_wR_factor_obs         0.1280
_reflns_number_observed          3685
_reflns_number_total             4643
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ja991046z_3.cif
_cod_data_source_block           203
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0944P)^2^+0.0247P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0944P)^2^+0.0247P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        1557.3(5)
_cod_database_code               4116515