Octa- and Nonamethylfluorenyl Complexes of Zirconium(IV): Reactive Hydride Derivatives and Reversible Hydrogen Migration between the Metal and the Fluorenyl Ligand
Bazinet, Patrick; Tilley, T. Don; Organometallics 28 (2009) 2285–; doi:10.1021/om900047x

data_4069138
_publ_section_title
;
 Octa- and Nonamethylfluorenyl Complexes of Zirconium(IV): Reactive
 Hydride Derivatives and Reversible Hydrogen Migration between the Metal
 and the Fluorenyl Ligand
;
_journal_issue                   7
_journal_name_full               Organometallics
_journal_page_first              2285
_journal_paper_doi               10.1021/om900047x
_journal_volume                  28
_journal_year                    2009
_chemical_formula_moiety         'C36 H54 Si2 Zr'
_chemical_formula_sum            'C36 H54 Si2 Zr'
_chemical_formula_weight         634.19
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 102.110(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.7773(14)
_cell_length_b                   20.796(3)
_cell_length_c                   15.510(2)
_cell_measurement_reflns_used    1190
_cell_measurement_temperature    156(2)
_cell_measurement_theta_max      18.66
_cell_measurement_theta_min      2.326
_cell_volume                     3398.8(8)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  POV-Ray
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      156(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0788
_diffrn_reflns_av_sigmaI/netI    0.1060
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            16859
_diffrn_reflns_theta_full        24.72
_diffrn_reflns_theta_max         24.72
_diffrn_reflns_theta_min         2.33
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.416
_exptl_absorpt_correction_T_max  0.941
_exptl_absorpt_correction_T_min  0.860
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'sadabs, 2004'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.239
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1352
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.602
_refine_diff_density_min         -0.493
_refine_diff_density_rms         0.096
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.019
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     352
_refine_ls_number_reflns         5773
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.0982
_refine_ls_R_factor_gt           0.0575
_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^)+(0.0537P)^2^+4.7874P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1297
_refine_ls_wR_factor_ref         0.1448
_reflns_number_gt                3927
_reflns_number_total             5773
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900047x_si_004.cif
_cod_data_source_block           pat3
_cod_original_cell_volume        3398.8(9)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4069138