Synthesis, Characterization, and Thermal Rearrangement of Zirconium Tetraazadienyl and Pentaazadienyl Complexes
Gehrmann, Thorsten; Lloret Fillol, Julio; Wadepohl, Hubert; Gade, Lutz H.; Organometallics 31 (2012) 4504–; doi:10.1021/om300291b

data_4078521
_publ_section_title
;
 Synthesis, Characterization, and Thermal Rearrangement of Zirconium
 Tetraazadienyl and Pentaazadienyl Complexes
;
_journal_issue                   12
_journal_name_full               Organometallics
_journal_page_first              4504
_journal_paper_doi               10.1021/om300291b
_journal_volume                  31
_journal_year                    2012
_chemical_formula_sum            'C53.5 H78 N8 Si2 Zr'
_chemical_formula_weight         980.64
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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_block_code                ga_tg10
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 97.041(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.1836(19)
_cell_length_b                   26.096(4)
_cell_length_c                   16.732(3)
_cell_measurement_temperature    100(2)
_cell_volume                     5279.7(15)
_computing_cell_refinement       'SAINT (Bruker AXS, 1997-2008)'
_computing_data_collection       'SMART (Bruker AXS, 1997-2003)'
_computing_data_reduction        'SAINT (Bruker AXS, 1997-2008)'
_computing_molecular_graphics    'PLATON (Spek, 1980-2008)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector (Bruker AXS Smart 1000)'
_diffrn_measurement_method       '\f- and \w-scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0782
_diffrn_reflns_av_sigmaI/netI    0.0463
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            114872
_diffrn_reflns_theta_full        28.70
_diffrn_reflns_theta_max         28.70
_diffrn_reflns_theta_min         1.86
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.296
_exptl_absorpt_correction_T_max  0.7458
_exptl_absorpt_correction_T_min  0.6850
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements (Blessing 1995)
SADABS (Sheldrick & Bruker AXS, 2004-2008)
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2092
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.053
_refine_diff_density_min         -0.717
_refine_diff_density_rms         0.086
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     645
_refine_ls_number_reflns         13644
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0791
_refine_ls_R_factor_gt           0.0452
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0388P)^2^+9.1032P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0997
_refine_ls_wR_factor_ref         0.1203
_reflns_number_gt                9902
_reflns_number_total             13644
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300291b_si_002.cif
_cod_data_source_block           complex_11
_cod_original_cell_volume        5279.8(14)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_original_formula_sum        'C53.50 H78 N8 Si2 Zr'
_cod_database_code               4078521
_audit_block_refno               790