A structural, magnetic and Mössbauer spectroscopic study of an unusual angular Jahn-Teller distortion in a series of high-spin iron(II) complexes.
Elhaik, Jerome; Evans, David J.; Kilner, Colin A.; Halcrow, Malcolm A.; Dalton transactions (Cambridge, England : 2003)  (2005) 1693–1700; doi:10.1039/b502175h

data_7008370
_publ_section_title
;
 A structural, magnetic and M\"ossbauer spectroscopic study of an
 unusual angular Jahn-Teller distortion in a series of high-spin
 iron(II) complexes.
;
_journal_issue                   9
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1693
_journal_page_last               1700
_journal_paper_doi               10.1039/b502175h
_journal_year                    2005
_chemical_formula_moiety         'C26 H26 Fe N10 O4, 2[B F4]'
_chemical_formula_sum            'C26 H26 B2 F8 Fe N10 O4'
_chemical_formula_weight         772.04
_chemical_name_systematic
;
Bis[2,6-bis{3-(hydroxymethyl)pyrazol-1-yl}pyridine]iron(II)
ditetrafluoroborate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 109.2730(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.0482(3)
_cell_length_b                   9.9323(1)
_cell_length_c                   16.4584(2)
_cell_measurement_reflns_used    27162
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.49
_cell_measurement_theta_min      2.32
_cell_volume                     3093.60(7)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1999)'
_computing_data_reduction        'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEX (McArdle, 1995)'
_computing_publication_material  'local program'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type
'Nonius KappaCCD area detector diffractometer'
_diffrn_measurement_method       '\w and \f scans'
_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  0.0464
_diffrn_reflns_av_sigmaI/netI    0.0380
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            27162
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.32
_exptl_absorpt_coefficient_mu    0.589
_exptl_absorpt_correction_T_max  0.862
_exptl_absorpt_correction_T_min  0.723
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Using multiple and symmetry-related data measurements via the program SORTAV
See R.H. Blessing, Acta Cryst (1995), A51, 33-38
;
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.658
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1568
_exptl_crystal_size_max          0.59
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.26
_refine_diff_density_max         0.971
_refine_diff_density_min         -0.717
_refine_diff_density_rms         0.143
_refine_ls_extinction_coef       0.020(3)
_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   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     534
_refine_ls_number_reflns         7049
_refine_ls_number_restraints     76
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0812
_refine_ls_R_factor_gt           0.0685
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1244P)^2^+3.3066P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1929
_refine_ls_wR_factor_ref         0.2054
_reflns_number_gt                5930
_reflns_number_total             7049
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b502175h.txt
_cod_data_source_block           je36
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7008370