Ultra-low temperature structure determination of a Mn12 single-molecule magnet and the interplay between lattice solvent and structural disorder
Farrell, Andrew R.; Coome, Jonathan A.; Probert, Michael R.; Goeta, Andrès E.; Howard, Judith A. K.; Lemée-Cailleau, Marie-Hélène; Parsons, Simon; Murrie, Mark; CrystEngComm 15 (2013) 3423–; doi:10.1039/c3ce00042g

data_7210674
_publ_section_title
;
 Ultra-low temperature structure determination of a Mn12 single-molecule
 magnet and the interplay between lattice solvent and structural disorder
;
_journal_issue                   17
_journal_name_full               CrystEngComm
_journal_page_first              3423
_journal_paper_doi               10.1039/c3ce00042g
_journal_volume                  15
_journal_year                    2013
_chemical_compound_source        AF18
_chemical_formula_moiety         '[Mn12O12(O2CCH3)16(H2O)4].2CH3CH2OH.4H2O'
_chemical_formula_sum            'C36 H72 Mn12 O56'
_chemical_formula_weight         2060.22
_space_group_IT_number           82
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'I -4'
_symmetry_space_group_name_H-M   'I -4'
_atom_sites_solution_hydrogens   other
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             12-11-07
_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                   17.1875(2)
_cell_length_b                   17.1875(2)
_cell_length_c                   12.1717(2)
_cell_measurement_reflns_used    9945
_cell_measurement_temperature    2(2)
_cell_measurement_theta_max      30
_cell_measurement_theta_min      2
_cell_volume                     3595.64(8)
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      2(2)
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 8.333
_diffrn_detector_type            'Bruker APEXII area detector'
_diffrn_measured_fraction_theta_full 0.909
_diffrn_measured_fraction_theta_max 0.909
_diffrn_measurement_device       'XIPHOS four-circle diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f scans'
_diffrn_measurement_specimen_support '0.5mm graphite fibre'
_diffrn_radiation_collimation    focused
_diffrn_radiation_monochromator  'multilayer optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_xray_symbol    K-L~3~
_diffrn_reflns_av_R_equivalents  0.0287
_diffrn_reflns_av_sigmaI/netI    0.0287
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            24483
_diffrn_reflns_theta_full        30.70
_diffrn_reflns_theta_max         30.70
_diffrn_reflns_theta_min         1.68
_diffrn_source                   'Bruker TXS with Helios Optics'
_diffrn_source_current           108.0
_diffrn_source_power             5.4
_diffrn_source_target            Mo
_diffrn_source_type              'Rotating Anode'
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    2.143
_exptl_absorpt_correction_T_max  0.4512
_exptl_absorpt_correction_T_min  0.3771
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS 2008/1 was used for absorption correction.
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.903
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2072
_exptl_crystal_recrystallization_method
;
KMnO4 + Mn(OAc)2.4H2O in AcOH
Crystals formed in sealed vessel at RT.
;
_exptl_crystal_size_max          1.0
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.826
_refine_diff_density_min         -0.674
_refine_diff_density_rms         0.109
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.546(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.077
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     231
_refine_ls_number_reflns         4861
_refine_ls_number_restraints     92
_refine_ls_restrained_S_all      1.086
_refine_ls_R_factor_all          0.0408
_refine_ls_R_factor_gt           0.0366
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0480P)^2^+8.6125P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0888
_refine_ls_wR_factor_ref         0.0907
_reflns_number_gt                4586
_reflns_number_total             4861
_reflns_threshold_expression     >2sigma(I)
_oxford_structure_analysis_title 'Mn12 in I-4'
_cod_data_source_file            c3ce00042g.txt
_cod_data_source_block           Mn12XN2K
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      I-4
_cod_database_code               7210674