A Family of Co(II)Co(III)3 Single-Ion Magnets with Zero-Field Slow Magnetic Relaxation: Fine Tuning of Energy Barrier by Remote Substituent and Counter Cation.
Zhu, Yuan-Yuan; Zhang, Yi-Quan; Yin, Ting-Ting; Gao, Chen; Wang, Bing-Wu; Gao, Song; Inorganic chemistry 54 (2015) 5475–5486; doi:10.1021/acs.inorgchem.5b00526

data_4343020
_publ_section_title
;
 A Family of Co(II)Co(III)3 Single-Ion Magnets with Zero-Field Slow
 Magnetic Relaxation: Fine Tuning of Energy Barrier by Remote Substituent
 and Counter Cation.
;
_journal_issue                   11
_journal_name_full               'Inorganic chemistry'
_journal_page_first              5475
_journal_page_last               5486
_journal_paper_doi               10.1021/acs.inorgchem.5b00526
_journal_volume                  54
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_moiety         C117H131Br6Co4N14O18
_chemical_formula_sum            'C117 H131 Br6 Co4 N14 O18'
_chemical_formula_weight         2736.54
_chemical_name_common            Co4-Br-DBU(R)
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 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                   12.780(3)
_cell_length_b                   19.188(4)
_cell_length_c                   47.313(10)
_cell_measurement_reflns_used    30950
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.38
_cell_measurement_theta_min      0.86
_cell_volume                     11602(4)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics
;
 Mercury: visualization and analysis of crystal structures, C. F. Macrae,
 P. R. Edgington, P. McCabe, E. Pidcock, G. P. Shields, R. Taylor,
 M. Towler and J. van de Streek, J. Appl. Cryst., 39, 453-457, 2006.
;
_computing_publication_material  'SHELX-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELX-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELX-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Saturn724+ CCD'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_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  0.0763
_diffrn_reflns_av_sigmaI/netI    0.0926
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       58
_diffrn_reflns_limit_l_min       -48
_diffrn_reflns_number            62813
_diffrn_reflns_theta_full        26.38
_diffrn_reflns_theta_max         26.38
_diffrn_reflns_theta_min         0.86
_exptl_absorpt_coefficient_mu    2.700
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.4432
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2008)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.567
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             5572
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         1.491
_refine_diff_density_min         -1.192
_refine_diff_density_rms         0.230
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.051(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.189
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1302
_refine_ls_number_reflns         23436
_refine_ls_number_restraints     133
_refine_ls_restrained_S_all      1.189
_refine_ls_R_factor_all          0.1152
_refine_ls_R_factor_gt           0.0929
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1082P)^2^+24.4867P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2270
_refine_ls_wR_factor_ref         0.2514
_reflns_number_gt                19073
_reflns_number_total             23436
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5b00526_si_002.cif
_cod_data_source_block           5R(1051820)
_cod_depositor_comments
'Adding full bibliography for 4343016--4343023.cif.'
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               4343020