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_1575145
_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, C H4 O, 3(H2 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             2024-05-23
_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                104.57(3)
_cell_angle_beta                 99.87(3)
_cell_angle_gamma                90.32(3)
_cell_formula_units_Z            2
_cell_length_a                   7.2600(15)
_cell_length_b                   14.476(3)
_cell_length_c                   15.344(3)
_cell_measurement_reflns_used    5538
_cell_measurement_temperature    85
_cell_measurement_theta_max      26.00
_cell_measurement_theta_min      3.14
_cell_volume                     1535.6(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      85
_diffrn_measured_fraction_theta_full 0.661
_diffrn_measured_fraction_theta_max 0.661
_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  0.1123
_diffrn_reflns_av_unetI/netI     0.1053
_diffrn_reflns_Laue_measured_fraction_full 0.661
_diffrn_reflns_Laue_measured_fraction_max 0.661
_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            5359
_diffrn_reflns_point_group_measured_fraction_full 0.661
_diffrn_reflns_point_group_measured_fraction_max 0.661
_diffrn_reflns_theta_full        25.027
_diffrn_reflns_theta_max         25.027
_diffrn_reflns_theta_min         1.455
_exptl_absorpt_coefficient_mu    1.116
_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    1.651
_exptl_crystal_description       plate
_exptl_crystal_F_000             775
_refine_diff_density_max         4.466
_refine_diff_density_min         -1.919
_refine_diff_density_rms         0.272
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.370
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     400
_refine_ls_number_reflns         3590
_refine_ls_number_restraints     375
_refine_ls_restrained_S_all      1.321
_refine_ls_R_factor_all          0.1558
_refine_ls_R_factor_gt           0.1307
_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^)+(0.2000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3327
_refine_ls_wR_factor_ref         0.3547
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2605
_reflns_number_total             3590
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5sc01202c2.cif
_cod_data_source_block           85k
_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               1575145
_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
 O5-C28
 1.35 with sigma of 0.02
 O4-C27
 1.3 with sigma of 0.02
3. Rigid bond restraints
 O5, C28
 with sigma for 1-2 distances of 0.01 and sigma for 1-3 distances of 0.02
4. Uiso/Uaniso restraints and constraints
C1 \\sim C7 \\sim C8 \\sim C9 \\sim C10 \\sim C11 \\sim C12 \\sim C13 \\sim C14
\\sim C15 \\sim C16 \\sim C19 \\sim C20 \\sim C21 \\sim C18 \\sim C17 \\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
N1 \\sim N2 \\sim N3 \\sim N4 \\sim N5 \\sim N6 \\sim N7 \\sim N8 \\sim N9
\\sim N10 \\sim N11 \\sim N12: within 3.8A with sigma of 0.01 and sigma for
terminal atoms of 0.02 within 3.8A
O1 \\sim O4 \\sim O5 \\sim O2 \\sim O3: within 3.8A with sigma of 0.01 and
sigma for terminal atoms of 0.02 within 3.8A
C28 \\sim C27: within 2A with sigma of 0.01 and sigma for terminal atoms of
0.02 within 2A
Uanis(C8) \\sim Ueq: with sigma of 0.01 and sigma for terminal atoms of 0.02
5. Others
 Fixed Sof: O5(0.5) H5A(0.5)
6.a Riding coordinates:
 C27(H27A,H27B,H27C), O1(H1A,H1B), O4(H4A), O5(H5A), O2(H2A,H2B), O3(H3A,H3B)
6.b Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C3(H3), C2(H2), C1(H1), C7(H7), C8(H8), C9(H9), C10(H10),
 C11(H11), C16(H16), C19(H19), C20(H20), C18(H18), C17(H17), C22(H22), C23(H23),
  C24(H24), C25(H25), C26(H26)
6.c Fitted hexagon refined as free rotating group:
 C4(C5,C6,C3,C2,C1), C16(C19,C20,C21,C18,C17)
;
_shelx_res_checksum              48482
_olex2_submission_special_instructions 'No special instructions were received'