Reactivity Consequences of Steric Reduction in Cyclopentadienyl Chromium β-Diketiminate Complexes
MacLeod, K. Cory; Conway, Julia L.; Tang, Liming; Smith, Joshua J.; Corcoran, Liam D.; Ballem, Katherine H. D.; Patrick, Brian O.; Smith, Kevin M.; Organometallics 28 (2009) 6798–; doi:10.1021/om900788c

data_4070402
_publ_section_title
;
 Reactivity Consequences of Steric Reduction in Cyclopentadienyl Chromium
 \b-Diketiminate Complexes
;
_journal_issue                   23
_journal_name_full               Organometallics
_journal_page_first              6798
_journal_paper_doi               10.1021/om900788c
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C26 H30 Cr I N2'
_chemical_formula_weight         549.42
_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                 97.115(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.2236(4)
_cell_length_b                   22.7100(10)
_cell_length_c                   12.8442(7)
_cell_measurement_reflns_used    14457
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.30
_cell_measurement_theta_min      2.57
_cell_volume                     2380.3(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.856
_diffrn_measured_fraction_theta_max 0.856
_diffrn_measurement_device_type  'Rigaku/ADSC CCD'
_diffrn_measurement_method       'area detector'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0155
_diffrn_reflns_av_sigmaI/netI    0.0180
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            8674
_diffrn_reflns_theta_full        27.55
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         2.65
_exptl_absorpt_coefficient_mu    1.793
_exptl_absorpt_correction_T_max  0.699
_exptl_absorpt_correction_T_min  0.463
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.533
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1108
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.640
_refine_diff_density_min         -0.422
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.187
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     297
_refine_ls_number_reflns         4706
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.187
_refine_ls_R_factor_all          0.0372
_refine_ls_R_factor_gt           0.0309
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0270P)^2^+3.4212P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0725
_refine_ls_wR_factor_ref         0.0748
_reflns_number_gt                4150
_reflns_number_total             4706
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900788c_si_001.cif
_cod_data_source_block           2b
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4070402