Apparently improved energy barrier of Dy(iii) SMMs by adopting the bridging bipyrimidine ligand
Hu, Peng; Ding, Manman; Gao, Xinpeng; Zhu, Aixin; Xiao, Fengping; Cao, Jiangfei; Zhang, Yiquan; CrystEngComm 26 (2024) 4657–4668; doi:10.1039/D4CE00436A

data_7249090
_publ_section_title
;
 Apparently improved energy barrier of Dy(iii) SMMs by adopting the
 bridging bipyrimidine ligand
;
_journal_issue                   34
_journal_name_full               CrystEngComm
_journal_page_first              4657
_journal_page_last               4668
_journal_paper_doi               10.1039/D4CE00436A
_journal_volume                  26
_journal_year                    2024
_chemical_formula_sum            'C38 H30 Dy2 F18 N4 O12'
_chemical_formula_weight         1401.66
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2020-06-16 deposited with the CCDC.	2024-07-22 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 113.407(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.6639(7)
_cell_length_b                   13.2219(7)
_cell_length_c                   16.7861(7)
_cell_measurement_reflns_used    12217
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      2.41
_cell_measurement_theta_min      27.29
_cell_volume                     2579.4(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  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  0.0628
_diffrn_reflns_av_sigmaI/netI    0.0362
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            21619
_diffrn_reflns_theta_full        27.25
_diffrn_reflns_theta_max         27.25
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    2.997
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.805
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cube
_exptl_crystal_F_000             1352
_refine_diff_density_max         1.431
_refine_diff_density_min         -1.492
_refine_diff_density_rms         0.108
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     337
_refine_ls_number_reflns         5751
_refine_ls_number_restraints     30
_refine_ls_restrained_S_all      1.140
_refine_ls_R_factor_all          0.0422
_refine_ls_R_factor_gt           0.0347
_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^)+(0.0387P)^2^+6.7620P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0867
_refine_ls_wR_factor_ref         0.0951
_reflns_number_gt                4961
_reflns_number_total             5751
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            d4ce00436a2.cif
_cod_data_source_block           dy_CCDC1
_cod_depositor_comments
'Adding full bibliography for 7249087--7249094.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7249090