Entanglement of spin transition and structural adaptability: manipulating the slow spin equilibrium by the guest-mediated fine-tuning of elastic frustration.
Chai, Yuqiao; Yang, Yu-Ting; Xue, Jin-Peng; Chemical science 16 (2025) 15555–15563; doi:10.1039/d5sc01202c

data_1575144
_publ_section_title
;
 Entanglement of spin transition and structural adaptability: manipulating
 the slow spin equilibrium by the guest-mediated fine-tuning of elastic
 frustration.
;
_journal_issue                   34
_journal_name_full               'Chemical science'
_journal_page_first              15555
_journal_page_last               15563
_journal_paper_doi               10.1039/d5sc01202c
_journal_volume                  16
_journal_year                    2025
_chemical_formula_moiety
'C26 H20 Fe N12 Pd, 3(H2 O), C H4 O, 0.5(C H O)'
_chemical_formula_sum            'C27.5 H30.5 Fe N12 O4.5 Pd'
_chemical_formula_weight         763.39
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     iterative
_audit_creation_date             2024-05-22
_audit_creation_method
;
Olex2 1.5
(compiled 2023.08.24 svn.re1ec1418 for OlexSys, GUI svn.r6817)
;
_audit_update_record
;
2024-05-23 deposited with the CCDC.	2025-07-21 downloaded from the CCDC.
;
_cell_angle_alpha                104.60(3)
_cell_angle_beta                 99.89(3)
_cell_angle_gamma                90.32(3)
_cell_formula_units_Z            2
_cell_length_a                   7.2810(15)
_cell_length_b                   14.499(3)
_cell_length_c                   15.355(3)
_cell_measurement_reflns_used    10670
_cell_measurement_temperature    130
_cell_measurement_theta_max      26.00
_cell_measurement_theta_min      3.14
_cell_volume                     1543.3(6)
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2016/6 (Sheldrick, 2015)'
_computing_structure_solution    'olex2.solve 1.5 (Bourhis et al., 2015)'
_diffrn_ambient_temperature      130
_diffrn_measured_fraction_theta_full 0.902
_diffrn_measured_fraction_theta_max 0.902
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0599
_diffrn_reflns_av_unetI/netI     0.0658
_diffrn_reflns_Laue_measured_fraction_full 0.902
_diffrn_reflns_Laue_measured_fraction_max 0.902
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            9249
_diffrn_reflns_point_group_measured_fraction_full 0.902
_diffrn_reflns_point_group_measured_fraction_max 0.902
_diffrn_reflns_theta_full        25.022
_diffrn_reflns_theta_max         25.022
_diffrn_reflns_theta_min         1.453
_exptl_absorpt_coefficient_mu    1.110
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'clear dark red'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   dark
_exptl_crystal_colour_primary    red
_exptl_crystal_density_diffrn    1.643
_exptl_crystal_description       plate
_exptl_crystal_F_000             775
_refine_diff_density_max         2.339
_refine_diff_density_min         -2.047
_refine_diff_density_rms         0.167
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     424
_refine_ls_number_reflns         4930
_refine_ls_number_restraints     403
_refine_ls_restrained_S_all      1.002
_refine_ls_R_factor_all          0.0811
_refine_ls_R_factor_gt           0.0745
_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^)+(0.1612P)^2^+2.1842P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2042
_refine_ls_wR_factor_ref         0.2148
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4293
_reflns_number_total             4930
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5sc01202c2.cif
_cod_data_source_block           130k
_cod_depositor_comments
'Adding full bibliography for 1575144--1575149.cif.'
_cod_original_formula_sum        'C27.50 H30.50 Fe N12 O4.50 Pd'
_cod_database_code               1575144
_shelx_shelxl_version_number     2016/6
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H) groups, All O(H,H) groups
2. Restrained distances
 O4-C27
 1.4 with sigma of 0.02
3. Uiso/Uaniso restraints and constraints
C1 \\sim C2 \\sim C3 \\sim C4 \\sim C5 \\sim C6 \\sim C7 \\sim C8 \\sim C9
\\sim C10 \\sim C11 \\sim C12 \\sim C13 \\sim C14 \\sim C15 \\sim C16 \\sim C17
\\sim C18 \\sim C19 \\sim C20 \\sim C21 \\sim C22 \\sim C23 \\sim C24 \\sim C25
\\sim C26 \\sim C27 \\sim C28: within 3.8A with sigma of 0.01 and sigma for
terminal atoms of 0.02 within 3.8A
Uanis(O4) \\sim Ueq, Uanis(C27) \\sim Ueq: with sigma of 0.01 and sigma for
terminal atoms of 0.02
Uanis(O5) \\sim Ueq, Uanis(C28) \\sim Ueq: with sigma of 0.01 and sigma for
terminal atoms of 0.02
Uanis(C28) \\sim Ueq, Uanis(C27) \\sim Ueq: with sigma of 0.01 and sigma for
terminal atoms of 0.02
4. Others
 Fixed Sof: O5(0.5) H5A(0.5)
5.a Riding coordinates:
 O1(H1A,H1B), C27(H27A,H27B,H27C), O4(H4A), O5(H5A), O2(H2A,H2B), O3(H3A,H3B)
5.b Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C3(H3), C4(H4), C5(H5), C7(H7), C8(H8), C9(H9), C10(H10),
 C11(H11), C16(H16), C17(H17), C18(H18), C19(H19), C20(H20), C22(H22), C23(H23),
  C24(H24), C25(H25), C26(H26)
;
_shelx_res_checksum              6095
_olex2_submission_special_instructions 'No special instructions were received'