Tuning ligand field strength with pendent Lewis acids: access to high spin iron hydrides
Kiernicki, John J.; Shanahan, James P.; Zeller, Matthias; Szymczak, Nathaniel K.; Chemical Science  (2019) –; doi:10.1039/C9SC00561G

data_1550973
_publ_section_title
;
 Tuning ligand field strength with pendent Lewis acids: access to high
 spin iron hydrides
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/C9SC00561G
_journal_year                    2019
_chemical_formula_moiety         'C41 H65 B2 Fe N5 O2, C5 H12'
_chemical_formula_sum            'C46 H77 B2 Fe N5 O2'
_chemical_formula_weight         809.59
_chemical_properties_physical    Air-sensitive,Moisture-sensitive,Hygroscopic
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2018-12-10 deposited with the CCDC.    2019-04-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 94.835(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.8891(4)
_cell_length_b                   17.2913(6)
_cell_length_c                   19.1228(7)
_cell_measurement_reflns_used    9916
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      79.7659
_cell_measurement_theta_min      5.4079
_cell_volume                     4576.2(3)
_computing_cell_refinement       'SAINT V8.37A (Bruker, 2016)'
_computing_data_collection       'Apex3 v2016.9-0 (Bruker, 2016)'
_computing_data_reduction        'SAINT V8.37A (Bruker, 2016)'
_computing_structure_refinement
;  
SHELXL-2016/6 (Sheldrick, 2015, 2016), 
SHELXLE Rev714 (H\"ubschle et al., 2011)
;
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.964
_diffrn_measurement_device_type  'Bruker AXS D8 Quest CMOS diffractometer'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  'laterally graded multilayer (Goebel) mirror'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0601
_diffrn_reflns_av_unetI/netI     0.0603
_diffrn_reflns_Laue_measured_fraction_full 0.989
_diffrn_reflns_Laue_measured_fraction_max 0.964
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            32363
_diffrn_reflns_point_group_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 0.964
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         80.350
_diffrn_reflns_theta_min         5.619
_diffrn_source                   'I-mu-S microsource X-ray tube'
_exptl_absorpt_coefficient_mu    2.949
_exptl_absorpt_correction_T_max  0.7543
_exptl_absorpt_correction_T_min  0.5243
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D.,
 J. Appl. Cryst. 48 (2015) 3-10
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.175
_exptl_crystal_description       block
_exptl_crystal_F_000             1760
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent'
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.230
_exptl_crystal_size_min          0.170
_refine_diff_density_max         0.349
_refine_diff_density_min         -0.435
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     772
_refine_ls_number_reflns         9656
_refine_ls_number_restraints     929
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0600
_refine_ls_R_factor_gt           0.0484
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0743P)^2^+0.2651P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1252
_refine_ls_wR_factor_ref         0.1322
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7951
_reflns_number_total             9656
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9sc00561g2.cif
_cod_data_source_block           JK238_0m_fullDisorder
_cod_database_code               1550973
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.526
_shelx_estimated_absorpt_t_max   0.634
_shelx_res_checksum              53497