Trigonal Bipyramidal Geometry and Tridentate Coordination Mode of the Tripod in FeCl2 Complexes with Tris(2-pyridylmethyl)amine Derivatives Bis-α-Substituted with Bulky Groups. Structures and Spectroscopic Comparative Studies
Dominique Mandon; Ahmed Machkour; Sandrine Goetz; Richard Welter; Inorganic Chemistry 41 (2002) 5364–5372; doi:10.1021/ic011104t

data_4318659
_publ_section_title
;
 Trigonal Bipyramidal Geometry and Tridentate Coordination Mode of the
 Tripod in FeCl2 Complexes with Tris(2-pyridylmethyl)amine Derivatives
 Bis-\a-Substituted with Bulky Groups. Structures and Spectroscopic
 Comparative Studies
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5364
_journal_page_last               5372
_journal_paper_doi               10.1021/ic011104t
_journal_volume                  41
_journal_year                    2002
_chemical_formula_sum            'C18 H17 Br Cl2 Fe N4'
_chemical_formula_weight         496.02
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 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                90.0000(10)
_cell_angle_beta                 104.284(2)
_cell_angle_gamma                90.0000(10)
_cell_formula_units_Z            4
_cell_length_a                   9.3793(3)
_cell_length_b                   15.4229(6)
_cell_length_c                   14.3681(6)
_cell_measurement_reflns_used    4596
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      30.034
_cell_measurement_theta_min      0.998
_cell_volume                     2014.18(13)
_computing_cell_refinement       'Denzo (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo (Nonius B.V., 1998)'
_computing_molecular_graphics    'ATOMS (Dowty, 1999)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    Direct_methods_(SIR,_Burla_et_al.,_1989)
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       '\p scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0621
_diffrn_reflns_av_sigmaI/netI    0.0756
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            6290
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.60
_exptl_absorpt_coefficient_mu    3.007
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.636
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             992
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.727
_refine_diff_density_min         -0.701
_refine_diff_density_rms         0.090
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.007(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         3808
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0516
_refine_ls_R_factor_gt           0.0428
_refine_ls_shift/su_max          0.029
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0402P)^2^+0.8880P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0989
_refine_ls_wR_factor_ref         0.1038
_reflns_number_gt                3339
_reflns_number_total             3808
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic011104t_s3.cif
_cod_data_source_block           L2Fe(II)Cl2
_cod_original_sg_symbol_H-M      'C c'
_cod_database_code               4318659