One- and Two-Step Spin-Crossover Behavior of [FeII(isoxazole)6]2+ and the Structure and Magnetic Properties of Triangular [FeIII3O(OAc)6(isoxazole)3][ClO4]
Wendy Hibbs; Petra J. van Koningsbruggen; Atta M. Arif; William W. Shum; Joel S. Miller; Inorganic Chemistry 42 (2003) 5645–5653; doi:10.1021/ic034226p

data_4314163
_publ_section_title
;
 One- and Two-Step Spin-Crossover Behavior of [FeII(isoxazole)6]2+ and the
 Structure and Magnetic Properties of Triangular
 [FeIII3O(OAc)6(isoxazole)3][ClO4]
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5645
_journal_page_last               5653
_journal_paper_doi               10.1021/ic034226p
_journal_volume                  42
_journal_year                    2003
_chemical_formula_sum            'C18 H18 Cl2 Fe N6 O14'
_chemical_formula_weight         669.14
_space_group_IT_number           147
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-P 3'
_symmetry_space_group_name_H-M   'P -3'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            3
_cell_length_a                   17.5829(3)
_cell_length_b                   17.5829(3)
_cell_length_c                   7.8043(2)
_cell_measurement_temperature    295(1)
_cell_volume                     2089.52(7)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'Nonius Collect'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    'WinGx, Ortep3'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR97
_diffrn_ambient_temperature      295(1)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Nonius KappaCCD Diffractometer'
_diffrn_measurement_method       'Phi plus Omega scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0363
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            4841
_diffrn_reflns_theta_full        32.02
_diffrn_reflns_theta_max         32.02
_diffrn_reflns_theta_min         2.61
_exptl_absorpt_coefficient_mu    0.809
_exptl_absorpt_correction_type   SCALEPACK
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.595
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1020
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.685
_refine_diff_density_min         -0.373
_refine_diff_density_rms         0.082
_refine_ls_extinction_coef       0.011(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     187
_refine_ls_number_reflns         4841
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.1463
_refine_ls_R_factor_gt           0.0886
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1678P)^2^+0.9060P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2555
_refine_ls_wR_factor_ref         0.3080
_reflns_number_gt                2636
_reflns_number_total             4841
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic034226p_s4.cif
_cod_data_source_block           '[FeII(oxazole)6][ClO4]2'
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_cell_volume        2089.51(7)
_cod_database_code               4314163