Unusual Electronic Features and Reactivity of the Dipyridylazaallyl Ligand: Characterizations of (smif)2M [M = Fe, Co, Co+, Ni; smif = {(2-py)CH}2N] and [(TMS)2NFe]2(smif)2
Brenda A. Frazier; Peter T. Wolczanski; Emil B. Lobkovsky; Thomas R. Cundari; Journal of the American Chemical Society 131 (2009) 3428–3429; doi:10.1021/ja8089747

data_4104015
_publ_section_title
;
 Unusual Electronic Features and Reactivity of the Dipyridylazaallyl
 Ligand: Characterizations of (smif)2M [M = Fe, Co, Co+, Ni; smif =
 {(2-py)CH}2N] and [(TMS)2NFe]2(smif)2
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              3428
_journal_page_last               3429
_journal_paper_doi               10.1021/ja8089747
_journal_volume                  131
_journal_year                    2009
_chemical_formula_moiety         'C24 H20 Fe N6'
_chemical_formula_sum            'C24 H20 Fe N6'
_chemical_formula_weight         448.31
_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   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 113.809(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.7442(4)
_cell_length_b                   27.4138(14)
_cell_length_c                   9.2149(4)
_cell_measurement_reflns_used    4857
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.54
_cell_measurement_theta_min      2.53
_cell_volume                     2020.93(17)
_computing_cell_refinement       'Bruker SAINT+'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT+'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker X8 APEX II diffractometer'
_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  0.0497
_diffrn_reflns_av_sigmaI/netI    0.0437
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       36
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            25212
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.53
_exptl_absorpt_coefficient_mu    0.771
_exptl_absorpt_correction_T_max  0.8610
_exptl_absorpt_correction_T_min  0.7229
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.473
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.374
_refine_diff_density_min         -0.470
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     360
_refine_ls_number_reflns         5007
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0586
_refine_ls_R_factor_gt           0.0424
_refine_ls_shift/su_max          0.010
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0422P)^2^+0.9777P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0932
_refine_ls_wR_factor_ref         0.1001
_reflns_number_gt                3994
_reflns_number_total             5007
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja8089747_si_001.cif
_cod_data_source_block           bf9
_cod_original_cell_volume        2020.93(16)
_cod_database_code               4104015