Experimental Modeling of Selective Alkene Oligomerization: Evidence for Facile Metallacyclopentane Dehydrogenation Mediated by a Transannular β-Hydrogen Agostic Interaction
Epshteyn, Albert; Trunkely, Emily F.; Kissounko, Denis A.; Fettinger, James C.; Sita, Lawrence R.; Organometallics 28 (2009) 2520–; doi:10.1021/om900132u

data_4069303
_publ_section_title
;
 Experimental Modeling of Selective Alkene Oligomerization: Evidence for
 Facile Metallacyclopentane Dehydrogenation Mediated by a Transannular
 \b-Hydrogen Agostic Interaction
;
_journal_issue                   8
_journal_name_full               Organometallics
_journal_page_first              2520
_journal_paper_doi               10.1021/om900132u
_journal_volume                  28
_journal_year                    2009
_chemical_formula_moiety         'C29 H44 N2 Zr'
_chemical_formula_sum            'C29 H44 N2 Zr'
_chemical_formula_weight         511.88
_chemical_name_systematic
;

 ?

;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                70.643(4)
_cell_angle_beta                 89.476(4)
_cell_angle_gamma                75.705(4)
_cell_formula_units_Z            8
_cell_length_a                   17.206(4)
_cell_length_b                   17.927(4)
_cell_length_c                   19.373(4)
_cell_measurement_reflns_used    6313
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.06
_cell_measurement_theta_min      2.35
_cell_volume                     5446(2)
_computing_cell_refinement       'SAINT (7.16b) (Bruker, 2004)'
_computing_data_collection       'SMART (Version 5.054) (Bruker, 2002)'
_computing_data_reduction        'SAINT (7.16b) (Bruker, 2004)'
_computing_molecular_graphics    'SHELXTL 5.1, XP (Sheldrick, 1994)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.946
_diffrn_measured_fraction_theta_max 0.946
_diffrn_measurement_device_type  'Bruker SMART APEXII'
_diffrn_measurement_method       '\w and \f'
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0544
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            19333
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.25
_diffrn_reflns_theta_min         1.23
_exptl_absorpt_coefficient_mu    0.422
_exptl_absorpt_correction_T_max  0.9784
_exptl_absorpt_correction_T_min  0.8811
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'TWINABS V1.05 (Sheldrick, 2003(priv comm)'
_exptl_crystal_colour            Purple
_exptl_crystal_density_diffrn    1.249
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             2176
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.05
_refine_diff_density_max         2.346
_refine_diff_density_min         -1.629
_refine_diff_density_rms         0.153
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1167
_refine_ls_number_reflns         19349
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.1094
_refine_ls_R_factor_gt           0.0717
_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^)+(0.1125P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1801
_refine_ls_wR_factor_ref         0.1961
_reflns_number_gt                12579
_reflns_number_total             19349
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900132u_si_004.cif
_cod_data_source_block           cmpd5
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        5445.9(19)
_cod_database_code               4069303