Spin-crossover compounds based on iron(ii) complexes of 2,6-bis(pyrazol-1-yl)pyridine (bpp) functionalized with carboxylic acid and ethyl carboxylic acid.
García-López, Víctor; Palacios-Corella, Mario; Abhervé, Alexandre; Pellicer-Carreño, Isaac; Desplanches, Cédric; Clemente-León, Miguel; Coronado, Eugenio; Dalton transactions (Cambridge, England : 2003) 47 (2018) 16958–16968; doi:10.1039/c8dt03511c

data_7047963
_publ_section_title
;
 Spin-crossover compounds based on iron(ii) complexes of
 2,6-bis(pyrazol-1-yl)pyridine (bpp) functionalized with carboxylic acid
 and ethyl carboxylic acid.
;
_journal_issue                   47
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              16958
_journal_page_last               16968
_journal_paper_doi               10.1039/c8dt03511c
_journal_volume                  47
_journal_year                    2018
_chemical_formula_sum            'C27 H24 F12 Fe N10 O5 Sb2'
_chemical_formula_weight         1095.91
_space_group_crystal_system      tetragonal
_space_group_IT_number           110
_space_group_name_Hall           'I 4bw -2c'
_space_group_name_H-M_alt        'I 41 c d'
_symmetry_space_group_name_Hall  'I 4bw -2c'
_symmetry_space_group_name_H-M   'I 41 c d'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2018-10-01 deposited with the CCDC.
2018-11-06 downloaded from the CCDC.
;
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_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
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_cell_length_b                   23.6034(15)
_cell_length_c                   14.9526(17)
_cell_measurement_reflns_used    1704
_cell_measurement_temperature    300(2)
_cell_measurement_theta_max      17.1230
_cell_measurement_theta_min      3.3930
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_computing_cell_refinement       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
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_computing_publication_material  'WinGX (L. J. Farrugia, 2012)'
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_computing_structure_solution    'SIR97 (A. Altomare et al., 1999)'
_diffrn_ambient_environment      air
_diffrn_ambient_temperature      299.9(3)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 16.0267
_diffrn_detector_type            Sapphire3
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'four-circle diffractometer'
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_diffrn_reflns_av_R_equivalents  0.1398
_diffrn_reflns_av_unetI/netI     0.1275
_diffrn_reflns_Laue_measured_fraction_full 0.997
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_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19539
_diffrn_reflns_point_group_measured_fraction_full 0.998
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_diffrn_reflns_theta_max         27.604
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_diffrn_source                   'micro-focus sealed X-ray tube'
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_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.46 (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.748
_exptl_crystal_description       needle
_exptl_crystal_F_000             4256
_exptl_crystal_size_max          0.160
_exptl_crystal_size_mid          0.040
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.418
_refine_diff_density_min         -0.320
_refine_diff_density_rms         0.082
_refine_ls_abs_structure_details
;
 Flack x determined using 640 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons and Flack (2004), Acta Cryst. A60, s61).
;
_refine_ls_abs_structure_Flack   -0.05(4)
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         4802
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.957
_refine_ls_R_factor_all          0.1756
_refine_ls_R_factor_gt           0.0679
_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^)+(0.0588P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1328
_refine_ls_wR_factor_ref         0.1825
_reflns_Friedel_coverage         0.915
_reflns_Friedel_fraction_full    0.998
_reflns_Friedel_fraction_max     0.987
_reflns_number_gt                2000
_reflns_number_total             4802
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt03511c2.cif
_cod_data_source_block           shelx_CCDC2
_cod_depositor_comments
'Adding full bibliography for 7047960--7047970.cif.'
_cod_original_cell_volume        8330.4(14)
_cod_database_code               7047963
_shelx_estimated_absorpt_t_min   0.769
_shelx_estimated_absorpt_t_max   0.966
_shelxl_version_number           2013-4
_shelx_res_checksum              12336