Unprecedented trinuclear FeII triazole-based complex exhibiting a concerted and complete sharp spin transition above room temperature
Pittala, Narsimhulu; Thétiot, Franck; Charles, Catherine; Triki, Smail; Boukheddaden, Kamel; Chastanet, Guillaume; Marchivie, Mathieu; Chem. Commun.  (2017) –; doi:10.1039/C7CC04112H

data_7120361
_publ_section_title
;
 Unprecedented trinuclear FeII triazole-based complex exhibiting a
 concerted and complete sharp spin transition above room temperature
;
_journal_name_full               'Chem. Commun.'
_journal_paper_doi               10.1039/C7CC04112H
_journal_year                    2017
_chemical_formula_moiety         'C108 H84 Fe3 N42 S6'
_chemical_formula_sum            'C108 H84 Fe3 N42 S6'
_chemical_formula_weight         2330.08
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      trigonal
_space_group_IT_number           148
_space_group_name_Hall           '-R 3'
_space_group_name_H-M_alt        'R -3'
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2017-06-28
_audit_creation_method
;
Olex2 1.2
(compiled Mar 28 2017 19:26:29 for OlexSys, GUI svn.r5337)
;
_audit_update_record
;
2017-06-28 deposited with the CCDC.
2017-06-30 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            3
_cell_length_a                   25.473(4)
_cell_length_b                   25.473(4)
_cell_length_c                   14.735(2)
_cell_measurement_reflns_used    829
_cell_measurement_temperature    279.16
_cell_measurement_theta_max      19.58
_cell_measurement_theta_min      2.77
_cell_volume                     8280(2)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      279.16
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.904
_diffrn_measured_fraction_theta_max 0.904
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0862
_diffrn_reflns_av_unetI/netI     0.2386
_diffrn_reflns_Laue_measured_fraction_full 0.904
_diffrn_reflns_Laue_measured_fraction_max 0.904
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            6216
_diffrn_reflns_point_group_measured_fraction_full 0.904
_diffrn_reflns_point_group_measured_fraction_max 0.904
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.242
_diffrn_reflns_theta_min         2.807
_exptl_absorpt_coefficient_mu    0.572
_exptl_absorpt_correction_T_max  0.7453
_exptl_absorpt_correction_T_min  0.6637
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2012/1 (Bruker,2012) was used for absorption correction.
wR2(int) was 0.0899 before and 0.0555 after correction.
The Ratio of minimum to maximum transmission is 0.8905.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            red
_exptl_crystal_colour_primary    red
_exptl_crystal_density_diffrn    1.402
_exptl_crystal_description       needle
_exptl_crystal_F_000             3600
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.825
_refine_diff_density_min         -0.640
_refine_diff_density_rms         0.084
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.932
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     241
_refine_ls_number_reflns         3021
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.932
_refine_ls_R_factor_all          0.2325
_refine_ls_R_factor_gt           0.0580
_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^)+(0.0794P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1255
_refine_ls_wR_factor_ref         0.1958
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1142
_reflns_number_total             3021
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7cc04112h2.cif
_cod_data_source_block           280K
_cod_original_cell_volume        8280(3)
_cod_database_code               7120361
_shelxl_version_number           2013-4
_shelx_estimated_absorpt_t_max   0.989
_shelx_estimated_absorpt_t_min   0.894
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C3(H3A,H3B), C17(H17A,H17B)
2.b Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C5(H5), C6(H6), C7(H7), C8(H8), C9(H9)
2.c Idealised Me refined as rotating group:
 C18(H18A,H18B,H18C)
;