(Phenoxyimidazolyl-salicylaldimine)iron complexes: synthesis, properties and iron catalysed ethylene reactions.
Yankey, Margaret; Obuah, Collins; Guzei, Ilia A.; Osei-Twum, Emmanuel; Hearne, Giovanni; Darkwa, James; Dalton transactions (Cambridge, England : 2003) 43 (2014) 13913–13923; doi:10.1039/c4dt01886a

data_7031768
_publ_section_title
;
 (Phenoxyimidazolyl-salicylaldimine)iron complexes: synthesis, properties
 and iron catalysed ethylene reactions.
;
_journal_issue                   37
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              13913
_journal_page_last               13923
_journal_paper_doi               10.1039/c4dt01886a
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety         'C20 H28 Br2 Fe N3 O'
_chemical_formula_sum            'C20 H28 Br2 Fe N3 O'
_chemical_formula_weight         542.12
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2014-01-15
_audit_creation_method
;
  Olex2 1.2
  (compiled Dec  5 2012 16:20:19, GUI svn.r4385)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.931(2)
_cell_length_b                   14.457(4)
_cell_length_c                   20.040(7)
_cell_measurement_temperature    296(2)
_cell_volume                     2297.8(12)
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement
;
SHELXL, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_computing_structure_solution
;
XS, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_diffrn_ambient_temperature      296.15
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.993
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0315
_diffrn_reflns_av_unetI/netI     0.0161
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            48840
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         26.439
_diffrn_reflns_theta_min         1.737
_exptl_absorpt_coefficient_mu    4.148
_exptl_crystal_density_diffrn    1.567
_exptl_crystal_F_000             1092
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.832
_refine_diff_density_min         -0.604
_refine_diff_density_rms         0.052
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.000(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     251
_refine_ls_number_reflns         4685
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0273
_refine_ls_R_factor_gt           0.0247
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(Fo^2^)+(0.0310P)^2^+1.2590P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0618
_refine_ls_wR_factor_ref         0.0630
_reflns_Friedel_coverage         0.756
_reflns_Friedel_fraction_full    0.998
_reflns_Friedel_fraction_max     0.996
_reflns_number_gt                4413
_reflns_number_total             4685
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c4dt01886a2.cif
_cod_data_source_block           darkwa140
_cod_depositor_comments
'Adding full bibliography for 7031766--7031768.cif.'
_cod_database_code               7031768
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  {H16A,H16B} of C16, {H17A,H17B} of C17, H3 of N3, H20 of C20, H19 of C19,
  H3A of C3, H5 of C5, H7 of C7
 At 1.5 times of:
  {H15A,H15B,H15C} of C15, {H14A,H14B,H14C} of C14, {H13A,H13B,H13C} of C13,
  {H9A,H9B,H9C} of C9, {H10A,H10B,H10C} of C10, {H11A,H11B,H11C} of C11
2.a Secondary CH2 refined with riding coordinates:
 C16(H16A,H16B), C17(H17A,H17B)
2.b Aromatic/amide H refined with riding coordinates:
 C3(H3A), C5(H5), C7(H7), C19(H19), C20(H20), N3(H3)
2.c Idealised Me refined as rotating group:
 C9(H9A,H9B,H9C), C10(H10A,H10B,H10C), C11(H11A,H11B,H11C), C13(H13A,H13B,
 H13C), C14(H14A,H14B,H14C), C15(H15A,H15B,H15C)
;
_shelx_estimated_absorpt_t_max   0.575
_shelx_estimated_absorpt_t_min   0.436
_shelxl_version_number           2013-2