Slow Relaxation in a One-Dimensional Rational Assembly of Antiferromagnetically Coupled [Mn4] Single-Molecule Magnets
Lollita Lecren; Olivier Roubeau; Claude Coulon; Yang-Guang Li; Xavier F. Le Goff; Wolfgang Wernsdorfer; Hitoshi Miyasaka; Rodolphe Clérac; Journal of the American Chemical Society 127 (2005) 17353–17363; doi:10.1021/ja0551685

data_4112086
_publ_section_title
;
 Slow Relaxation in a One-Dimensional Rational Assembly of
 Antiferromagnetically Coupled [Mn4] Single-Molecule Magnets
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              17353
_journal_page_last               17363
_journal_paper_doi               10.1021/ja0551685
_journal_volume                  127
_journal_year                    2005
_chemical_formula_moiety         'C18 H18 Mn2 N6 O3, Cl O4'
_chemical_formula_sum            'C18 H18 Cl Mn2 N6 O7'
_chemical_formula_weight         575.71
_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                 102.79(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.530(2)
_cell_length_b                   16.060(3)
_cell_length_c                   13.260(3)
_cell_measurement_temperature    150(1)
_cell_volume                     2186.8(8)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(1)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius KappaCCD diffractometer'
_diffrn_measurement_method       CCD
_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  0.1542
_diffrn_reflns_av_sigmaI/netI    0.1133
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            33778
_diffrn_reflns_theta_full        27.41
_diffrn_reflns_theta_max         27.41
_diffrn_reflns_theta_min         2.02
_diffrn_standards_decay_%        none
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.332
_exptl_absorpt_correction_T_max  0.766
_exptl_absorpt_correction_T_min  0.677
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   '(blessing, 1995, 1997)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.749
_exptl_crystal_description       plate
_exptl_crystal_F_000             1164
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.717
_refine_diff_density_min         -1.268
_refine_diff_density_rms         0.296
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     325
_refine_ls_number_reflns         4963
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.1346
_refine_ls_R_factor_gt           0.0540
_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^)+(0.0892P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1242
_refine_ls_wR_factor_ref         0.1814
_reflns_number_gt                2781
_reflns_number_total             4963
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0551685si20050729_013013.cif
_cod_data_source_block           n33
_cod_database_code               4112086