A Case for Asymmetric Hydrozirconation
Yonghui Zhang; Richard J. Keaton; Lawrence R. Sita; Journal of the American Chemical Society 125 (2003) 8746–8747; doi:10.1021/ja0349453

data_4113944
_publ_section_title
;
 A Case for Asymmetric Hydrozirconation
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8746
_journal_page_last               8747
_journal_paper_doi               10.1021/ja0349453
_journal_volume                  125
_journal_year                    2003
_chemical_formula_sum            'C26 H43 Cl N2 Si Zr'
_chemical_formula_weight         538.38
_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                 98.4410(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.1335(3)
_cell_length_b                   16.8281(5)
_cell_length_c                   16.7150(5)
_cell_measurement_reflns_used    9724
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.49
_cell_measurement_theta_min      2.37
_cell_volume                     2819.49(15)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0208
_diffrn_reflns_av_sigmaI/netI    0.0113
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            45518
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.36
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.542
_exptl_absorpt_correction_T_max  0.8358
_exptl_absorpt_correction_T_min  0.7770
_exptl_absorpt_correction_type   'empirical, SADABS'
_exptl_crystal_colour            Red
_exptl_crystal_density_diffrn    1.268
_exptl_crystal_density_meas      0
_exptl_crystal_description       Block
_exptl_crystal_F_000             1136
_exptl_crystal_size_max          0.49
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.34
_refine_diff_density_max         0.519
_refine_diff_density_min         -0.301
_refine_diff_density_rms         0.044
_refine_ls_extinction_coef       0.00013(18)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     451
_refine_ls_number_reflns         6470
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0267
_refine_ls_R_factor_gt           0.0230
_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^)+(0.0309P)^2^+1.0167P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0599
_refine_ls_wR_factor_ref         0.0624
_reflns_number_gt                5887
_reflns_number_total             6470
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0349453si20030301_054857_3.cif
_cod_data_source_block           cmpd5.
_cod_database_code               4113944