Reactions of Group 4 Metallocene Alkyne Complexes with Carbodiimides: Experimental and Theoretical Studies of the Structure and Bonding of Five-Membered Hetero-Metallacycloallenes
Katharina Kaleta; Martin Ruhmann; Oliver Theilmann; Torsten Beweries; Subhendu Roy; Perdita Arndt; Alexander Villinger; Eluvathingal D. Jemmis; Axel Schulz; Uwe Rosenthal; Journal of the American Chemical Society 133 (2011) 5463–5473; doi:10.1021/ja111479j

data_4105905
_publ_section_title
;
 Reactions of Group 4 Metallocene Alkyne Complexes with Carbodiimides:
 Experimental and Theoretical Studies of the Structure and Bonding of
 Five-Membered Hetero-Metallacycloallenes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              5463
_journal_page_last               5473
_journal_paper_doi               10.1021/ja111479j
_journal_volume                  133
_journal_year                    2011
_chemical_formula_moiety         'C31 H50 N2 Si2 Zr'
_chemical_formula_sum            'C31 H50 N2 Si2 Zr'
_chemical_formula_weight         598.13
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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_author_name               'Villinger, A.'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                78.8080(10)
_cell_angle_beta                 85.7410(10)
_cell_angle_gamma                69.6270(10)
_cell_formula_units_Z            2
_cell_length_a                   10.4688(3)
_cell_length_b                   12.2660(4)
_cell_length_c                   13.3377(4)
_cell_measurement_reflns_used    7969
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      65.045
_cell_measurement_theta_min      5.047
_cell_volume                     1574.99(8)
_computing_cell_refinement       'Bruker Apex V7.51A'
_computing_data_collection       'Bruker Apex V7.51A'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'ORTEP-3v2.01 (Farrugia, 1997)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.964
_diffrn_measured_fraction_theta_max 0.964
_diffrn_measurement_device_type  'Bruker-Nonius Apex X8-CCD-diffractometer'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0189
_diffrn_reflns_av_sigmaI/netI    0.0315
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            15193
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.52
_exptl_absorpt_coefficient_mu    0.447
_exptl_absorpt_correction_T_max  0.9081
_exptl_absorpt_correction_T_min  0.8558
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2004)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.261
_exptl_crystal_description       block
_exptl_crystal_F_000             636
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.454
_refine_diff_density_min         -0.353
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     331
_refine_ls_number_reflns         8865
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0344
_refine_ls_R_factor_gt           0.0278
_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^)+(0.0395P)^2^+0.2574P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0705
_refine_ls_wR_factor_ref         0.0731
_reflns_number_gt                7836
_reflns_number_total             8865
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            ja111479j_si_002.cif
_cod_data_source_block           av_ot18
_cod_database_code               4105905