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_7719418
_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         'C29 H30 Fe N4 O2, Cl O4, C2 H3 N, 0.33[H2O]'
_chemical_formula_sum            'C31 H33.66 Cl Fe N5 O6.33'
_chemical_formula_weight         668.87
_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   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2025-06-25
_audit_creation_method
;
Olex2 1.5
(compiled 2025.05.31 svn.r86d253d1 for OlexSys, GUI svn.r7254)
;
_audit_update_record
;
2025-06-26 deposited with the CCDC.	2025-09-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 101.141(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.6500(11)
_cell_length_b                   18.5302(19)
_cell_length_c                   15.3084(15)
_cell_measurement_reflns_used    9319
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.83
_cell_measurement_theta_min      2.24
_cell_volume                     2964.1(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0440
_diffrn_reflns_av_unetI/netI     0.0263
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            45343
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.998
_diffrn_reflns_theta_min         1.745
_exptl_absorpt_coefficient_mu    0.654
_exptl_absorpt_correction_T_max  0.9375
_exptl_absorpt_correction_T_min  0.8850
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            black
_exptl_crystal_colour_primary    black
_exptl_crystal_density_diffrn    1.499
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             1393
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.1
_refine_diff_density_max         1.051
_refine_diff_density_min         -0.530
_refine_diff_density_rms         0.079
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.083
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     434
_refine_ls_number_reflns         5817
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.0609
_refine_ls_R_factor_gt           0.0541
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0643P)^2^+4.2801P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1320
_refine_ls_wR_factor_ref         0.1363
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5174
_reflns_number_total             5817
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5dt01833a2.cif
_cod_data_source_block           2-11_mor50
_cod_depositor_comments
'Adding full bibliography for 7719387--7719420.cif.'
_cod_database_code               7719418
_shelx_shelxl_version_number     2019/3
_shelx_estimated_absorpt_t_max   0.937
_shelx_estimated_absorpt_t_min   0.780
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Others
 Sof(Cl2)=Sof(O5B)=Sof(O6B)=1-FVAR(1)
 Sof(Cl1)=Sof(O5A)=Sof(O6A)=FVAR(1)
3.a Secondary CH2 refined with riding coordinates:
 C12(H12A,H12B), C13(H13A,H13B), C14(H14A,H14B), C15(H15A,H15B), C16(H16A,
 H16B), C17(H17A,H17B), C18(H18A,H18B)
3.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C5(H5), C6(H6), C7(H7), C8(H8), C11(H11), C19(H19), C22(H22),
 C23(H23), C24(H24), C25(H25), C26(H26), C27(H27)
3.c Idealised Me refined as rotating group:
 C31(H31A,H31B,H31C)
;
_smtbx_masks_special_details
;
A solvent mask was calculated and 12 electrons were 
found in a volume of 112\%A^3^ in 2 voids per unit cell. 
This is consistent with the presence of 
0.33[H2O] per Asymmetric Unit 
which account for 13 electrons 
per unit cell.
;
_smtbx_masks_void_probe_radius   1.0
_smtbx_masks_void_truncation_radius 1.2
_shelx_res_checksum              83976
_shelx_fab_checksum              83242
_olex2_submission_special_instructions 'No special instructions were received'