Symmetric and asymmetric ligands for Fe<sup>III</sup> spin crossover - the influence of the <i>C</i><sub>2</sub> axis.
Kelly, Conor T.; Cuza, Emmelyne; Pasquetti, Eoin; Quinn, Niall; Griffin, Michael; Nockemann, Peter; Müller-Bunz, Helge; Bruno-Colmenarez, Julia; Felton, Solveig; Lada, Zoi G.; Morgan, Grace G.; Dalton transactions (Cambridge, England : 2003) 54 (2025) 14522–14532; doi:10.1039/d5dt01833a

data_7719393
_publ_section_title
;
 Symmetric and asymmetric ligands for Fe<sup>III</sup> spin crossover -
 the influence of the <i>C</i><sub>2</sub> axis.
;
_journal_issue                   38
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              14522
_journal_page_last               14532
_journal_paper_doi               10.1039/d5dt01833a
_journal_volume                  54
_journal_year                    2025
_chemical_formula_moiety         'C21 H24 Br2 Fe N4 O2, B F4'
_chemical_formula_sum            'C21 H24 B Br2 F4 Fe N4 O2'
_chemical_formula_weight         666.92
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2025-03-17
_audit_creation_method
;
Olex2 1.5
(compiled 2025.03.06 svn.red2d20d0 for OlexSys, GUI svn.r7188)
;
_audit_update_record
;
2025-06-04 deposited with the CCDC.	2025-09-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90.270(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.0400(10)
_cell_length_b                   17.585(2)
_cell_length_c                   15.0840(10)
_cell_measurement_reflns_used    4434
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.3615
_cell_measurement_theta_min      3.4687
_cell_volume                     2397.9(4)
_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.34.36 (release 02-08-2010 CrysAlis171 .NET) 
(compiled Aug  2 2010,13:00:58) 
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.34.36 (release 02-08-2010 CrysAlis171 .NET) 
(compiled Aug  2 2010,13:00:58) 
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.34.36 (release 02-08-2010 CrysAlis171 .NET) 
(compiled Aug  2 2010,13:00:58) 
;
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2019/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.15
_diffrn_detector_area_resol_mean 10.3196
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.974
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0639
_diffrn_reflns_av_unetI/netI     0.0830
_diffrn_reflns_Laue_measured_fraction_full 0.985
_diffrn_reflns_Laue_measured_fraction_max 0.974
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            11073
_diffrn_reflns_point_group_measured_fraction_full 0.985
_diffrn_reflns_point_group_measured_fraction_max 0.974
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.419
_diffrn_reflns_theta_min         3.499
_exptl_absorpt_coefficient_mu    4.021
_exptl_absorpt_correction_T_max  0.696
_exptl_absorpt_correction_T_min  0.610
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.34.36 (release 02-08-2010 CrysAlis171 .NET) 
(compiled Aug  2 2010,13:00:58) 
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
;
_exptl_crystal_colour            black
_exptl_crystal_colour_primary    black
_exptl_crystal_density_diffrn    1.847
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1324
_exptl_crystal_size_max          0.1629
_exptl_crystal_size_mid          0.1505
_exptl_crystal_size_min          0.118
_refine_diff_density_max         2.449
_refine_diff_density_min         -1.365
_refine_diff_density_rms         0.195
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     316
_refine_ls_number_reflns         4792
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0779
_refine_ls_R_factor_gt           0.0628
_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^)+(0.0935P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1557
_refine_ls_wR_factor_ref         0.1707
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3853
_reflns_number_total             4792
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5dt01833a2.cif
_cod_data_source_block           1-4b_mor489
_cod_depositor_comments
'Adding full bibliography for 7719387--7719420.cif.'
_cod_database_code               7719393
_shelx_shelxl_version_number     2019/3
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups
2.a Ternary CH refined with riding coordinates:
 N2(H2A), N3(H3A)
2.b Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B), C9(H9A,H9B), C10(H10A,H10B), C11(H11A,H11B), C12(H12A,H12B),
 C13(H13A,H13B), C14(H14A,H14B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C5(H5), C7(H7), C15(H15), C17(H17), C19(H19), C20(H20)
;
_shelx_res_checksum              70047
_olex2_submission_special_instructions 'No special instructions were received'