A mononuclear iron(II) complex constructed using a complementary ligand pair exhibits intrinsic luminescence-spin-crossover coupling.
Chen, Du-Yong; Yi, Cheng; Li, Xin-Feng; Zhou, Ren-He; Zhang, Li-Yan; Cai, Rui; Meng, Yin-Shan; Liu, Tao; Dalton transactions (Cambridge, England : 2003) 54 (2025) 2908–2915; doi:10.1039/d4dt03177f

data_7717754
_publ_section_title
;
 A mononuclear iron(II) complex constructed using a complementary ligand
 pair exhibits intrinsic luminescence-spin-crossover coupling.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2908
_journal_page_last               2915
_journal_paper_doi               10.1039/d4dt03177f
_journal_volume                  54
_journal_year                    2025
_chemical_formula_moiety         'C49 H40 Co N8 O6, H2 O, 2(B F4)'
_chemical_formula_sum            'C49 H42 B2 Co F8 N8 O7'
_chemical_formula_weight         1087.45
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2024-10-31
_audit_creation_method
;
Olex2 1.5
(compiled 2023.08.24 svn.re1ec1418 for OlexSys, GUI svn.r6928)
;
_audit_update_record
;
2024-11-04 deposited with the CCDC.	2025-01-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   16.209(3)
_cell_length_b                   20.762(5)
_cell_length_c                   28.579(6)
_cell_measurement_reflns_used    9543
_cell_measurement_temperature    299.70
_cell_measurement_theta_max      26.23
_cell_measurement_theta_min      2.43
_cell_volume                     9618(4)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      299.70
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0461
_diffrn_reflns_av_unetI/netI     0.0289
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            73346
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.393
_diffrn_reflns_theta_min         1.425
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.450
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.6718
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0624 before and 0.0517 after correction.
The Ratio of minimum to maximum transmission is 0.9013.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear dark brown'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   dark
_exptl_crystal_colour_primary    brown
_exptl_crystal_density_diffrn    1.502
_exptl_crystal_description       block
_exptl_crystal_F_000             4456
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.5
_exptl_crystal_size_min          0.4
_refine_diff_density_max         0.434
_refine_diff_density_min         -0.370
_refine_diff_density_rms         0.097
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     688
_refine_ls_number_reflns         9791
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0582
_refine_ls_R_factor_gt           0.0441
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0789P)^2^+3.8120P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1271
_refine_ls_wR_factor_ref         0.1441
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7931
_reflns_number_total             9791
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4dt03177f2.cif
_cod_data_source_block           1_CCDC2
_cod_depositor_comments
'Adding full bibliography for 7717751--7717754.cif.'
_cod_database_code               7717754
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.841
_shelx_estimated_absorpt_t_min   0.806
_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
2.a Free rotating group:
 O5(H5A)
2.b Aromatic/amide H refined with riding coordinates:
 C00X(H00X), C00Y(H00Y), C011(H011), C013(H013), C014(H014), C017(H017),
 C018(H018), C019(H019), C01B(H01B), C01C(H01C), C01D(H01D), C01G(H01G),
 C01H(H01H), C01J(H01J), C01K(H01K), C01L(H01L), C01M(H01M), C01N(H01N),
 C01O(H01O), C01P(H01P), C01Q(H01Q), C01R(H01R), C01S(H01S), C01T(H01T),
 C01X(H01X), C020(H020), C021(H021)
2.c Idealised Me refined as rotating group:
 C01U(H01A,H01E,H01F), C01Z(H01I,H01U,H01V), C022(H02A,H02B,H02C), C023(H02D,
 H02E,H02F)
2.d Idealised tetrahedral OH refined as rotating group:
 O00H(H00H)
;
_olex2_submission_special_instructions 'No special instructions were received'