Trigonal antiprismatic Co(ii) single molecule magnets with large uniaxial anisotropies: importance of Raman and tunneling mechanisms
Zhang, Yuan-Zhu; Gómez-Coca, Silvia; Brown, Andrew J.; Saber, Mohamed R.; Zhang, Xuan; Dunbar, Kim R.; Chem. Sci. 7 (2016) 6519–; doi:10.1039/C6SC02035F

data_1543487
_publ_section_title
;
 Trigonal antiprismatic Co(ii) single molecule magnets with large uniaxial
 anisotropies: importance of Raman and tunneling mechanisms
;
_journal_issue                   10
_journal_name_full               'Chem. Sci.'
_journal_page_first              6519
_journal_paper_doi               10.1039/C6SC02035F
_journal_volume                  7
_journal_year                    2016
_chemical_formula_sum            'C20 H20 Cl2 Co N12 O8'
_chemical_formula_weight         686.31
_chemical_name_common            Co(Tpm)2
_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
_audit_update_record
;
2015-09-04 deposited with the CCDC.
2016-06-16 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 103.529(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.500(8)
_cell_length_b                   7.818(6)
_cell_length_c                   16.997(13)
_cell_measurement_reflns_used    3339
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      24.88
_cell_measurement_theta_min      2.46
_cell_volume                     1356.6(18)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0513
_diffrn_reflns_av_sigmaI/netI    0.0382
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            13000
_diffrn_reflns_theta_full        25.84
_diffrn_reflns_theta_max         25.84
_diffrn_reflns_theta_min         2.09
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.900
_exptl_absorpt_correction_T_max  0.9735
_exptl_absorpt_correction_T_min  0.7495
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.680
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       strip
_exptl_crystal_F_000             698
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.03
_refine_diff_density_max         1.988
_refine_diff_density_min         -0.875
_refine_diff_density_rms         0.122
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     196
_refine_ls_number_reflns         2603
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0746
_refine_ls_R_factor_gt           0.0602
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1046P)^2^+2.5815P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1635
_refine_ls_wR_factor_ref         0.1760
_reflns_number_gt                2092
_reflns_number_total             2603
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6sc02035f2.cif
_cod_data_source_block           p21n
_cod_depositor_comments
'Adding full bibliography for 1543487--1543488.cif.'
_cod_original_cell_volume        1356.5(18)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               1543487