General Preparation of (N3N)ZrX (N3N = N(CH2CH2NSiMe3)33−) Complexes from a Hydride Surrogate
Roering, Andrew J.; Maddox, Annalese F.; Elrod, L. Taylor; Chan, Stephanie M.; Ghebreab, Michael B.; Donovan, Kyle L.; Davidson, Jillian J.; Hughes, Russell P.; Shalumova, Tamila; MacMillan, Samantha N.; Tanski, Joseph M.; Waterman, Rory; Organometallics 28 (2009) 573–; doi:10.1021/om8008684

data_4068469
_publ_section_title
;
 General Preparation of (N3N)ZrX (N3N = N(CH2CH2NSiMe3)33&#x2212;)
 Complexes from a Hydride Surrogate
;
_journal_issue                   2
_journal_name_full               Organometallics
_journal_page_first              573
_journal_paper_doi               10.1021/om8008684
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C19 H49 N5 Si3 Zr'
_chemical_formula_weight         523.12
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           159
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'P 3 -2c'
_symmetry_space_group_name_H-M   'P 3 1 c'
_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                120.00
_cell_formula_units_Z            2
_cell_length_a                   11.9522(6)
_cell_length_b                   11.9522(6)
_cell_length_c                   11.6463(5)
_cell_measurement_temperature    125(2)
_cell_volume                     1440.84(12)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      125(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0207
_diffrn_reflns_av_sigmaI/netI    0.0127
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            18203
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         1.97
_exptl_absorpt_coefficient_mu    0.520
_exptl_absorpt_correction_T_max  0.9261
_exptl_absorpt_correction_T_min  0.8596
_exptl_absorpt_correction_type   empirical
_exptl_crystal_density_diffrn    1.206
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             560
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.197
_refine_diff_density_min         -0.188
_refine_diff_density_rms         0.032
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     113
_refine_ls_number_reflns         2393
_refine_ls_number_restraints     36
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0150
_refine_ls_R_factor_gt           0.0144
_refine_ls_shift/su_max          0.016
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0205P)^2^+0.2106P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0381
_refine_ls_wR_factor_ref         0.0386
_reflns_number_gt                2339
_reflns_number_total             2393
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om8008684_si_002.cif
_cod_data_source_block           (N3N)ZrNHtBu
_cod_original_cell_volume        1440.83(12)
_cod_original_sg_symbol_H-M      P31c
_cod_database_code               4068469