Significant Enhancement of Energy Barriers in Dinuclear Dysprosium Single-Molecule Magnets Through Electron-Withdrawing Effects
Fatemah Habib; Gabriel Brunet; Veacheslav Vieru; Ilia Korobkov; Liviu F. Chibotaru; Muralee Murugesu; Journal of the American Chemical Society 135 (2013) 13242–13245; doi:10.1021/ja404846s

data_4120763
_publ_section_title
;
 Significant Enhancement of Energy Barriers in Dinuclear Dysprosium
 Single-Molecule Magnets Through Electron-Withdrawing Effects
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13242
_journal_page_last               13245
_journal_paper_doi               10.1021/ja404846s
_journal_volume                  135
_journal_year                    2013
_chemical_formula_sum            'C25 H24 Dy F6 N3 O6'
_chemical_formula_weight         738.97
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 99.6190(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.3340(4)
_cell_length_b                   10.6933(4)
_cell_length_c                   20.2703(7)
_cell_measurement_reflns_used    9910
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      28.27
_cell_measurement_theta_min      2.54
_cell_volume                     2635.89(16)
_computing_cell_refinement       'APEX II, Bruker (2009)'
_computing_data_collection       'APEX II, Bruker (2009)'
_computing_data_reduction        'XPREP, Bruker (2009)'
_computing_molecular_graphics    'SHELXTL, Bruker (2004)'
_computing_publication_material  'SHELXTL, Bruker (2004)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0232
_diffrn_reflns_av_sigmaI/netI    0.0169
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            42015
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    2.924
_exptl_absorpt_correction_T_max  0.8215
_exptl_absorpt_correction_T_min  0.6520
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker (2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.862
_exptl_crystal_density_meas      ?
_exptl_crystal_description       block
_exptl_crystal_F_000             1452
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.07
_refine_diff_density_max         1.156
_refine_diff_density_min         -0.581
_refine_diff_density_rms         0.083
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.009
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     370
_refine_ls_number_reflns         6498
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.009
_refine_ls_R_factor_all          0.0271
_refine_ls_R_factor_gt           0.0227
_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^)+(0.0314P)^2^+2.7048P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0533
_refine_ls_wR_factor_ref         0.0552
_reflns_number_gt                5923
_reflns_number_total             6498
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja404846s_Hfac.cif
_cod_data_source_block           mm224
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'n/a' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_database_code               4120763