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_4105906
_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_sum            'C33 H42 N2 Si2 Zr'
_chemical_formula_weight         614.09
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           56
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ab 2ac'
_symmetry_space_group_name_H-M   'P c c n'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   16.8952(6)
_cell_length_b                   31.7271(9)
_cell_length_c                   11.7933(3)
_cell_measurement_reflns_used    5858
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      27.20
_cell_measurement_theta_min      2.14
_cell_volume                     6321.6(3)
_computing_cell_refinement       X-AREA
_computing_data_collection       'X-AREA (Stoe & Cie, 2005)'
_computing_data_reduction        X-AREA
_computing_molecular_graphics    'XP in SHELXTL'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'STOE IPDS II'
_diffrn_measurement_method       \w
_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  0.0330
_diffrn_reflns_av_sigmaI/netI    0.0390
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       39
_diffrn_reflns_limit_k_min       -39
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            32846
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.20
_exptl_absorpt_coefficient_mu    0.447
_exptl_absorpt_correction_T_max  0.9507
_exptl_absorpt_correction_T_min  0.8404
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'X-SHAPE and X-RED32 (Stoe & Cie, 2005)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.290
_exptl_crystal_description       prism
_exptl_crystal_F_000             2576
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.249
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.040
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.825
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     351
_refine_ls_number_reflns         6193
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      0.825
_refine_ls_R_factor_all          0.0484
_refine_ls_R_factor_gt           0.0255
_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^)+(0.0293P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0506
_refine_ls_wR_factor_ref         0.0535
_reflns_number_gt                4174
_reflns_number_total             6193
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja111479j_si_003.cif
_cod_data_source_block           ks1112
_cod_database_code               4105906