Activating a high-spin iron(II) complex to thermal spin-crossover with an inert non-isomorphous molecular dopant.
Halcrow, Malcolm A.; Vasili, Hari Babu; Pask, Christopher M.; Kulak, Alexander N.; Cespedes, Oscar; Dalton transactions (Cambridge, England : 2003) 53 (2024) 6983–6992; doi:10.1039/d4dt00443d

data_7715540
_publ_section_title
;
 Activating a high-spin iron(II) complex to thermal spin-crossover with an
 inert non-isomorphous molecular dopant.
;
_journal_issue                   16
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6983
_journal_page_last               6992
_journal_paper_doi               10.1039/d4dt00443d
_journal_volume                  53
_journal_year                    2024
_chemical_absolute_configuration ab
_chemical_formula_moiety         'C22 H18 Fe0.5 N10 Ni0.5, 2(Cl O4)'
_chemical_formula_sum            'C22 H18 Cl2 Fe0.5 N10 Ni0.5 O8'
_chemical_formula_weight         678.64
_chemical_name_systematic
'Bis[2,6-di(pyrazol-1-yl)pyridine]iron(II) bis[2,6-di(pyrazol-1-yl)pyridine]-nickel(II) ditetrafluoroborate 0.50:0.50 solid solution'
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2024-02-12
_audit_creation_method
;
Olex2 1.5
(compiled 2021.07.19 svn.r715e62df for OlexSys, GUI svn.r6383)
;
_audit_update_record
;
2024-02-13 deposited with the CCDC.	2024-03-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 98.181(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.4913(4)
_cell_length_b                   8.5507(4)
_cell_length_c                   18.7250(8)
_cell_measurement_reflns_used    5859
_cell_measurement_temperature    100.01(10)
_cell_measurement_theta_max      29.1750
_cell_measurement_theta_min      2.1950
_cell_volume                     1345.72(11)
_computing_cell_refinement       'CrysAlisPro 1.171.41.93a (Rigaku OD, 2020)'
_computing_data_collection       'CrysAlisPro 1.171.41.93a (Rigaku OD, 2020)'
_computing_data_reduction        'CrysAlisPro 1.171.41.93a (Rigaku OD, 2020)'
_computing_molecular_graphics    'XSEED (Barbour, 2020)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELX-TL (Sheldrick, 2015)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      100.01(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 5.3095
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.846
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w    -58.00  16.00   1.00   30.00    --    9.61 -30.00-142.00   74
  2  \w     -5.00  83.00   1.00   30.00    --    9.61  30.00  18.00   88
  3  \w     -9.00  46.00   1.00   30.00    --    9.61 -99.00-180.00   55
  4  \w    -37.00  18.00   1.00   30.00    --  -10.00  77.00-150.00   55
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at home/near, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0251087000
_diffrn_orient_matrix_UB_12      0.0138596000
_diffrn_orient_matrix_UB_13      -0.0372222000
_diffrn_orient_matrix_UB_21      0.0736569000
_diffrn_orient_matrix_UB_22      -0.0291257000
_diffrn_orient_matrix_UB_23      -0.0080426000
_diffrn_orient_matrix_UB_31      -0.0326502000
_diffrn_orient_matrix_UB_32      -0.0764056000
_diffrn_orient_matrix_UB_33      -0.0036495000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0321
_diffrn_reflns_av_unetI/netI     0.0545
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.846
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            11197
_diffrn_reflns_point_group_measured_fraction_full 0.941
_diffrn_reflns_point_group_measured_fraction_max 0.771
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         29.895
_diffrn_reflns_theta_min         2.198
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.908
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.790
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.42.81a (Rigaku Oxford Diffraction, 2023)
Numerical absorption correction based on gaussian integration over
a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            brown
_exptl_crystal_colour_primary    brown
_exptl_crystal_density_diffrn    1.675
_exptl_crystal_description       plate
_exptl_crystal_F_000             690
_exptl_crystal_preparation       'Magnetic properties'
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: acetonitrile/diethyl ether'
_exptl_crystal_size_max          0.125
_exptl_crystal_size_mid          0.118
_exptl_crystal_size_min          0.041
_refine_diff_density_max         0.632
_refine_diff_density_min         -0.530
_refine_diff_density_rms         0.070
_refine_ls_abs_structure_details
;
 Flack x determined using 2061 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.017(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     388
_refine_ls_number_reflns         5975
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0433
_refine_ls_R_factor_gt           0.0377
_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^)+(0.0184P)^2^+0.9072P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0712
_refine_ls_wR_factor_ref         0.0739
_reflns_Friedel_coverage         0.714
_reflns_Friedel_fraction_full    0.874
_reflns_Friedel_fraction_max     0.685
_reflns_number_gt                5496
_reflns_number_total             5975
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4dt00443d2.cif
_cod_data_source_block           mh722
_cod_depositor_comments
'Adding full bibliography for 7715536--7715541.cif.'
_cod_original_formula_sum        'C22 H18 Cl2 Fe0.50 N10 Ni0.50 O8'
_cod_database_code               7715540
_shelx_shelxl_version_number     2018/3
_chemical_oxdiff_formula         C22H18Cl2Fe0.5N10Ni0.5O8
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2. Uiso/Uaniso restraints and constraints
Uanis(Fe1) = Uanis(Ni1)
3. Others
 X(Fe1)=X(Ni1)=FVAR(1)
 Y(Fe1)=Y(Ni1)=FVAR(2)
 Z(Fe1)=Z(Ni1)=FVAR(3)
 Fixed Sof: Fe1(0.5) Ni1(0.5)
4.a Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C6(H6), C10(H10), C11(H11), C12(H12), C15(H15), C16(H16),
 C17(H17), C20(H20), C21(H21), C22(H22), C26(H26), C27(H27), C28(H28), C31(H31),
  C32(H32), C33(H33)
;
_shelx_res_checksum              10865
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.723
_oxdiff_exptl_absorpt_empirical_full_min 0.665