New mixed-valence MnII2MnIII2 clusters exhibiting an unprecedented MnII/III oxidation state distribution in their magnetically coupled cores.
Wittick, Lisa M.; Jones, Leigh F.; Jensen, Paul; Moubaraki, Boujemaa; Spiccia, Leone; Berry, Kevin J.; Murray, Keith S.; Dalton transactions (Cambridge, England : 2003)  (2006) 1534–1543; doi:10.1039/b511817d

data_7006537
_publ_section_title
;
 New mixed-valence MnII2MnIII2 clusters exhibiting an unprecedented
 MnII/III oxidation state distribution in their magnetically coupled
 cores.
;
_journal_issue                   12
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1534
_journal_page_last               1543
_journal_paper_doi               10.1039/b511817d
_journal_year                    2006
_chemical_formula_moiety         '[Mn4(teaH2)2(teaH)2(Me3CCO2)2](Me3CCO2)2'
_chemical_formula_sum            'C44 H82 Mn4 N4 O20'
_chemical_formula_weight         1206.90
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                82.44(3)
_cell_angle_beta                 84.43(3)
_cell_angle_gamma                63.95(3)
_cell_formula_units_Z            1
_cell_length_a                   10.577(2)
_cell_length_b                   11.019(2)
_cell_length_c                   13.590(3)
_cell_measurement_temperature    123(2)
_cell_volume                     1409.2(6)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 19997)'
_computing_molecular_graphics    XSeed
_computing_publication_material  XSeed
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  'horizonally mounted graphite crystal'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0306
_diffrn_reflns_av_sigmaI/netI    0.0338
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            26375
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         28.24
_diffrn_reflns_theta_min         3.49
_exptl_absorpt_coefficient_mu    0.948
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.801
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red/brown
_exptl_crystal_density_diffrn    1.422
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular block'
_exptl_crystal_F_000             634
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.637
_refine_diff_density_min         -0.458
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     366
_refine_ls_number_reflns         6835
_refine_ls_number_restraints     9
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0548
_refine_ls_R_factor_gt           0.0423
_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^)+(0.0349P)^2^+1.8736P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0904
_refine_ls_wR_factor_ref         0.0954
_reflns_number_gt                5820
_reflns_number_total             6835
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b511817d.txt
_cod_data_source_block           1)
_cod_original_cell_volume        1409.3(5)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7006537