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_4343023
_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         C115H129Co4N16O27
_chemical_formula_sum            'C115 H129 Co4 N16 O27'
_chemical_formula_weight         2403.06
_chemical_name_common            Co4-NO2-TBAB(R)
_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                   19.547(4)
_cell_length_b                   19.704(4)
_cell_length_c                   29.635(6)
_cell_measurement_reflns_used    37972
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.24
_cell_volume                     11414(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  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0585
_diffrn_reflns_av_sigmaI/netI    0.0580
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            76800
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.24
_exptl_absorpt_coefficient_mu    0.653
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7068
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2008)'
_exptl_crystal_colour            'dark red'
_exptl_crystal_density_diffrn    1.398
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             5020
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.48
_exptl_crystal_size_min          0.46
_refine_diff_density_max         0.898
_refine_diff_density_min         -1.081
_refine_diff_density_rms         0.194
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.005(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.169
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1469
_refine_ls_number_reflns         26097
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.169
_refine_ls_R_factor_all          0.0596
_refine_ls_R_factor_gt           0.0529
_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^)+(0.0797P)^2^+1.5092P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1365
_refine_ls_wR_factor_ref         0.1550
_reflns_number_gt                24614
_reflns_number_total             26097
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5b00526_si_002.cif
_cod_data_source_block           8R(1051823)
_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               4343023