A μ(1,1)- or μ(1,3)-carboxylate bridge makes the difference in the magnetic properties of dinuclear Mn(II) compounds.
Gómez, Verónica; Corbella, Montserrat; Font-Bardia, Mercé; Calvet, Teresa; Dalton transactions (Cambridge, England : 2003) 39 (2010) 11664–11674; doi:10.1039/c0dt00902d

data_7026913
_publ_section_title
;
 A \m(1,1)- or \m(1,3)-carboxylate bridge makes the difference in the
 magnetic properties of dinuclear Mn(II) compounds.
;
_journal_issue                   48
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              11664
_journal_page_last               11674
_journal_paper_doi               10.1039/c0dt00902d
_journal_volume                  39
_journal_year                    2010
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C62 H40 Cl2 Mn2 N8 O4, 6(C2 H3 N, 2(Cl O4)'
_chemical_formula_sum            'C74 H58 Cl4 Mn2 N14 O12'
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_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
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_cell_angle_beta                 106.457(2)
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_cell_length_b                   13.0026(3)
_cell_length_c                   13.3200(3)
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_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.36
_cell_measurement_theta_min      2.36
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_computing_cell_refinement       'APPEX2 (BRUKER AXS, 2005)'
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_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
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_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'BRUKER APPEX-II CCD'
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_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
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_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.7107
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_diffrn_reflns_av_unetI/netI     0.0334
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       14
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_exptl_crystal_colour            Yellow
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_exptl_crystal_description       prism
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     481
_refine_ls_number_reflns         7427
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.098
_refine_ls_R_factor_all          0.0468
_refine_ls_R_factor_gt           0.0352
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_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0600P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_reflns_number_gt                5910
_reflns_number_total             7427
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0dt00902d.txt
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_cod_database_code               7026913