Photomagnetic properties of iron(II) spin crossover complexes of 2,6-dipyrazolylpyridine and 2,6-dipyrazolylpyrazine ligands.
Carbonera, Chiara; Sánchez Costa, José; Money, Victoria A.; Elhaïk, Jérôme; Howard, Judith A. K.; Halcrow, Malcolm A.; Létard, Jean-François; Dalton transactions (Cambridge, England : 2003)  (2006) 3058–3066; doi:10.1039/b601366j

data_7007192
_publ_section_title
;
 Photomagnetic properties of iron(II) spin crossover complexes of
 2,6-dipyrazolylpyridine and 2,6-dipyrazolylpyrazine ligands.
;
_journal_issue                   25
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3058
_journal_page_last               3066
_journal_paper_doi               10.1039/b601366j
_journal_year                    2006
_chemical_formula_moiety         'C26 H26 Fe N10, 2(Cl O4)'
_chemical_formula_sum            'C26 H26 Cl2 Fe N10 O8'
_chemical_formula_weight         733.32
_chemical_name_common
;Bis(2,6-bis(4-methylpyrazol-1-yl)pyridine)iron(ii)
diperchlorate (compound 6)
;
_chemical_name_systematic
;
Bis[2,6-bis(4-methylpyrazol-1-yl)pyridine]iron(II) diperchlorate
(compound 6)
;
_space_group_IT_number           114
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P -4 2n'
_symmetry_space_group_name_H-M   'P -4 21 c'
_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            2
_cell_length_a                   9.5865(14)
_cell_length_b                   9.5865(14)
_cell_length_c                   17.933(4)
_cell_measurement_reflns_used    4264
_cell_measurement_temperature    250(2)
_cell_measurement_theta_max      23.244
_cell_measurement_theta_min      2.2715
_cell_volume                     1648.1(5)
_computing_cell_refinement       'SMART version 5.060 (Bruker, 1999)'
_computing_data_collection       'SMART version 5.060 (Bruker, 1999)'
_computing_data_reduction        'SAINT version 6.02A (Bruker, 2001)'
_computing_molecular_graphics    'SHELXTL version 5.10 (Bruker, 1997)'
_computing_publication_material  'SHELXTL version 5.10 (Bruker, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      250(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART 1000'
_diffrn_measurement_method       /w
_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  0.0756
_diffrn_reflns_av_sigmaI/netI    0.0535
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            11139
_diffrn_reflns_theta_full        27.42
_diffrn_reflns_theta_max         27.42
_diffrn_reflns_theta_min         2.27
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.682
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.707251
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (G.M.Sheldrick, 1998)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.478
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.000
_refine_diff_density_min         -0.379
_refine_diff_density_rms         0.082
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.0(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     115
_refine_ls_number_reflns         1893
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.1149
_refine_ls_R_factor_gt           0.0708
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1273P)^2^+0.5847P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1831
_refine_ls_wR_factor_ref         0.2192
_reflns_number_gt                1217
_reflns_number_total             1893
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b601366j.txt
_cod_data_source_block           sad_4
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
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-421c
_cod_database_code               7007192