Chelate-Controlled Synthesis of Racemic ansa-Zirconocenes
Matthew D. LoCoco; Xingwang Zhang; Richard F. Jordan; Journal of the American Chemical Society 126 (2004) 15231–15244; doi:10.1021/ja046629+

data_4113194
_publ_section_title
;
 Chelate-Controlled Synthesis of Racemic ansa-Zirconocenes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15231
_journal_page_last               15244
_journal_paper_doi               10.1021/ja046629+
_journal_volume                  126
_journal_year                    2004
_chemical_formula_moiety         'C35 H34 N2 Si Zr, C7 H8'
_chemical_formula_sum            'C42 H42 N2 Si Zr'
_chemical_formula_weight         694.09
_chemical_name_common            rac-[Me2Si(indenyl)2]Zr{PhN(CH2)3NPh}
_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                 109.265(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.972(2)
_cell_length_b                   19.648(4)
_cell_length_c                   15.091(3)
_cell_measurement_reflns_used    32208
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.03
_cell_measurement_theta_min      1.77
_cell_volume                     3351.0(11)
_computing_cell_refinement       'SAINT (Bruker AXS)'
_computing_data_collection       'SMART 5.624 (Bruker AXS)'
_computing_data_reduction        'SAINT (Bruker AXS)'
_computing_molecular_graphics    'shelxtl 5.1 (Bruker AXS)'
_computing_publication_material  'shelxtl 5.1 (Bruker AXS)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker 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  0.0351
_diffrn_reflns_av_sigmaI/netI    0.0349
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            32208
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.77
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.397
_exptl_absorpt_correction_T_max  0.960
_exptl_absorpt_correction_T_min  0.860
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS, SHELXTL (version 5.1) program library 
(G. Sheldrick, Bruker Analytical X-ray Systems, Madison, WI)
;
_exptl_crystal_colour            Red
_exptl_crystal_density_diffrn    1.376
_exptl_crystal_description       Fragment
_exptl_crystal_F_000             1448
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.311
_refine_diff_density_min         -0.499
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.101
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     418
_refine_ls_number_reflns         5926
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.101
_refine_ls_R_factor_all          0.0464
_refine_ls_R_factor_gt           0.0408
_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^+3.4497P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0923
_refine_ls_wR_factor_ref         0.0954
_reflns_number_gt                5420
_reflns_number_total             5926
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0466292Bsi20040908_121000.cif
_cod_data_source_block           matt10s
_cod_original_cell_volume        3351.2(11)
_cod_database_code               4113194