Unexpected Spin-Crossover and a Low-Pressure Phase Change in an Iron(II)/Dipyrazolylpyridine Complex Exhibiting a High-Spin Jahn-Teller Distortion.
Kershaw Cook, Laurence J.; Thorp-Greenwood, Flora L; Comyn, Tim P.; Cespedes, Oscar; Chastanet, Guillaume; Halcrow, Malcolm A.; Inorganic chemistry 54 (2015) 6319–6330; doi:10.1021/acs.inorgchem.5b00614

data_4343275
_publ_section_title
;
 Unexpected Spin-Crossover and a Low-Pressure Phase Change in an
 Iron(II)/Dipyrazolylpyridine Complex Exhibiting a High-Spin Jahn-Teller
 Distortion.
;
_journal_issue                   13
_journal_name_full               'Inorganic chemistry'
_journal_page_first              6319
_journal_page_last               6330
_journal_paper_doi               10.1021/acs.inorgchem.5b00614
_journal_volume                  54
_journal_year                    2015
_chemical_formula_moiety         'C24 H22 Fe N14, 2[B F4], 4[C H3 N O2]'
_chemical_formula_sum            'C28 H34 B2 F8 Fe N14 O8'
_chemical_formula_weight         924.16
_chemical_name_systematic
; 
Bis-[4-methyl-2,6-di{pyrazol-1-yl}pyridine]iron(II) ditetrafluoroborate
tetrakis-nitromethane solvate
;
_space_group_IT_number           120
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'I -4 -2c'
_symmetry_space_group_name_H-M   'I -4 c 2'
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.2226(3)
_cell_length_b                   16.2226(3)
_cell_length_c                   14.8493(5)
_cell_measurement_reflns_used    4087
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.03
_cell_measurement_theta_min      2.51
_cell_volume                     3907.93(17)
_computing_cell_refinement       'CrysAlisPro, Agilent Technologies'
_computing_data_collection       'CrysAlisPro, Agilent Technologies'
_computing_data_reduction        'CrysAlisPro, Agilent Technologies'
_computing_molecular_graphics    'XSEED (Barbour, 2001)'
_computing_publication_material  'local program'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 5.3095
_diffrn_measured_fraction_theta_full 0.926
_diffrn_measured_fraction_theta_max 0.926
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'SuperNova (Mo) X-ray Source'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0537
_diffrn_reflns_av_sigmaI/netI    0.0519
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            10584
_diffrn_reflns_theta_full        29.76
_diffrn_reflns_theta_max         29.76
_diffrn_reflns_theta_min         1.78
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.491
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.693
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro, Agilent Technologies,
Version 1.171.36.24 (release 03-12-2012 CrysAlis171 .NET)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.571
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1888
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.517
_refine_diff_density_min         -0.685
_refine_diff_density_rms         0.134
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.159
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     181
_refine_ls_number_reflns         2478
_refine_ls_number_restraints     22
_refine_ls_restrained_S_all      1.157
_refine_ls_R_factor_all          0.0884
_refine_ls_R_factor_gt           0.0814
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0259P)^2^+58.7892P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1915
_refine_ls_wR_factor_ref         0.1951
_reflns_number_gt                2234
_reflns_number_total             2478
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5b00614_si_002.cif
_cod_data_source_block           lkc203
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 

 Adding full bibliography for 4343275--4343279.cif.
;
_cod_database_code               4343275