Versatility in the binding of 2-pyrazinecarboxylate with iron. Synthesis, structure and magnetic properties of iron(II) and iron(III) complexes.
Tanase, Stefania; Marqués Gallego, Patricia; Bouwman, Elisabeth; Long, Gary J.; Rebbouh, Leila; Grandjean, Fernande; de Gelder, René; Mutikainen, Ilpo; Turpeinen, Urho; Reedijk, Jan; Dalton transactions (Cambridge, England : 2003)  (2006) 1675–1684; doi:10.1039/b512048a

data_7006558
_publ_section_title
;
 Versatility in the binding of 2-pyrazinecarboxylate with iron.
 Synthesis, structure and magnetic properties of iron(II) and iron(III)
 complexes.
;
_journal_issue                   13
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1675
_journal_page_last               1684
_journal_paper_doi               10.1039/b512048a
_journal_year                    2006
_chemical_formula_sum            'C25 H21 Fe N7 O4'
_chemical_formula_weight         539.34
_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                 118.93(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.239(2)
_cell_length_b                   28.497(2)
_cell_length_c                   10.402(4)
_cell_measurement_reflns_used    35346
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.53
_cell_measurement_theta_min      3.10
_cell_volume                     2396.9(12)
_computing_cell_refinement       'COLLECT (Nonius, 2002)'
_computing_data_collection       'COLLECT (Nonius, 2002)'
_computing_data_reduction        'COLLECT (Nonius, 2002)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1990)'
_computing_publication_material  'SHELXTL (Sheldrick, 1990)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_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  0.0638
_diffrn_reflns_av_sigmaI/netI    0.0483
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       36
_diffrn_reflns_limit_k_min       -36
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            35346
_diffrn_reflns_theta_full        27.53
_diffrn_reflns_theta_max         27.53
_diffrn_reflns_theta_min         3.10
_exptl_absorpt_coefficient_mu    0.677
_exptl_absorpt_correction_T_max  0.9478
_exptl_absorpt_correction_T_min  0.8765
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.495
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             1112
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.417
_refine_diff_density_min         -0.465
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     334
_refine_ls_number_reflns         5486
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0646
_refine_ls_R_factor_gt           0.0387
_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^)+(0.0376P)^2^+1.2197P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0847
_refine_ls_wR_factor_ref         0.0941
_reflns_number_gt                4072
_reflns_number_total             5486
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b512048a.txt
_cod_data_source_block           pm15
_cod_original_cell_volume        2396.9(11)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7006558