Heterocyclic amine directed synthesis of metal(II)-oxalates: investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2.
Keene, Tony D.; Zimmermann, Iwan; Neels, Antonia; Sereda, Olha; Hauser, Jürg; Bonin, Michel; Hursthouse, Michael B.; Price, Daniel J.; Decurtins, Silvio; Dalton transactions (Cambridge, England : 2003) 39 (2010) 4937–4950; doi:10.1039/b927522c

data_7025380
_publ_section_title
;
 Heterocyclic amine directed synthesis of metal(II)-oxalates:
 investigating the magnetic properties of two complete series of chains
 with S = 5/2 to S = 1/2.
;
_journal_issue                   20
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4937
_journal_page_last               4950
_journal_paper_doi               10.1039/b927522c
_journal_volume                  39
_journal_year                    2010
_chemical_formula_moiety         'C48 H36 Fe3 N12 O12'
_chemical_formula_sum            'C48 H36 Fe3 N12 O12'
_chemical_formula_weight         1140.44
_chemical_melting_point          ?
_chemical_name_common
;
Iron(II) bis-benzimidazole oxalate
;
_chemical_name_systematic
;
catena-[(\m~2~oxalato)-bis(benzimidazole)-iron(II)]
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 94.530(12)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.945(2)
_cell_length_b                   12.3461(9)
_cell_length_c                   18.550(2)
_cell_measurement_reflns_used    6413
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      29.37
_cell_measurement_theta_min      1.91
_cell_volume                     4781.8(8)
_computing_cell_refinement       'CELL (Stoe IPDS Software, 2000)'
_computing_data_collection       'EXPOSE (Stoe IPDS Software, 2000)'
_computing_data_reduction        'INTEGRATE (Stoe IPDS Software, 2000)'
_computing_molecular_graphics    'Diamond 2 (Brandenberg, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_detector_area_resol_mean 0.81\%A
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'STOE IPDS'
_diffrn_measurement_method       'phi oscillation'
_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  0.0607
_diffrn_reflns_av_sigmaI/netI    0.0817
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            18399
_diffrn_reflns_theta_full        26.09
_diffrn_reflns_theta_max         26.09
_diffrn_reflns_theta_min         1.95
_exptl_absorpt_coefficient_mu    0.976
_exptl_absorpt_correction_T_max  0.5647
_exptl_absorpt_correction_T_min  0.5417
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[c.f. R.H. Blessing, Acta Cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.584
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2328
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.35
_refine_diff_density_max         1.572
_refine_diff_density_min         -0.344
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.856
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     339
_refine_ls_number_reflns         4673
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.856
_refine_ls_R_factor_all          0.1150
_refine_ls_R_factor_gt           0.0462
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0674P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1139
_refine_ls_wR_factor_ref         0.1294
_reflns_number_gt                2131
_reflns_number_total             4673
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b927522c.txt
_cod_data_source_block           compound2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'n/a' was changed to '?' - the value
is undefined or not given.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        4781.9(8)
_cod_original_sg_symbol_H-M      'C 2 /c'
_cod_database_code               7025380