A single-molecule magnet assembly exhibiting a dielectric transition at 470 K
Wang, Yu-Xia; Shi, Wei; Li, Han; Song, You; Fang, Liang; Lan, Yanhua; Powell, Annie K.; Wernsdorfer, Wolfgang; Ungur, Liviu; Chibotaru, Liviu F.; Shen, Mingrong; Cheng, Peng; Chemical Science 3 (2012) 3366–; doi:10.1039/c2sc21023a

data_1556365
_publ_section_title
;
 A single-molecule magnet assembly exhibiting a dielectric transition at
 470 K
;
_journal_issue                   12
_journal_name_full               'Chemical Science'
_journal_page_first              3366
_journal_paper_doi               10.1039/c2sc21023a
_journal_volume                  3
_journal_year                    2012
_chemical_formula_sum            'C22 H50 Dy3 N8 O21'
_chemical_formula_weight         1250.20
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P n a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   28.1795(7)
_cell_length_b                   14.8684(4)
_cell_length_c                   8.9668(2)
_cell_measurement_reflns_used    5040
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      28.9742
_cell_measurement_theta_min      2.3740
_cell_volume                     3756.95(16)
_computing_cell_refinement
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CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.66 (release 28-04-2010 CrysAlis171 .NET)
(compiled Apr 28 2010,14:27:37)
;
_computing_data_collection
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CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.66 (release 28-04-2010 CrysAlis171 .NET)
(compiled Apr 28 2010,14:27:37)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.66 (release 28-04-2010 CrysAlis171 .NET)
(compiled Apr 28 2010,14:27:37)
;
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 16.2116
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'SuperNova, Single source at offset), Eos'
_diffrn_measurement_method       '\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  0.0225
_diffrn_reflns_av_sigmaI/netI    0.0350
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            9052
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.56
_exptl_absorpt_coefficient_mu    5.997
_exptl_absorpt_correction_T_max  0.3811
_exptl_absorpt_correction_T_min  0.1540
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.66 (release 28-04-2010 CrysAlis171 .NET)
(compiled Apr 28 2010,14:27:37)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.210
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2416
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         2.275
_refine_diff_density_min         -1.743
_refine_diff_density_rms         0.206
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.007(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     498
_refine_ls_number_reflns         5216
_refine_ls_number_restraints     349
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0412
_refine_ls_R_factor_gt           0.0404
_refine_ls_shift/su_max          0.196
_refine_ls_shift/su_mean         0.004
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0645P)^2^+24.5323P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0987
_refine_ls_wR_factor_ref         0.0993
_reflns_number_gt                5122
_reflns_number_total             5216
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2sc21023a.txt
_cod_data_source_block           p110519a
_cod_original_cell_volume        3756.93(16)
_cod_database_code               1556365