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_7249093
_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            'C49 H46 Dy F9 N2 O6'
_chemical_formula_weight         1092.38
_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
;
2020-06-15 deposited with the CCDC.	2024-07-22 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 106.9770(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.7153(6)
_cell_length_b                   17.6221(6)
_cell_length_c                   18.7216(6)
_cell_measurement_reflns_used    11379
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.30
_cell_measurement_theta_min      2.82
_cell_volume                     4958.8(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II 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  0.0285
_diffrn_reflns_av_sigmaI/netI    0.0136
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            91042
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.75
_exptl_absorpt_coefficient_mu    1.588
_exptl_absorpt_correction_T_max  0.9107
_exptl_absorpt_correction_T_min  0.5836
_exptl_absorpt_correction_type   psi-scan
_exptl_crystal_density_diffrn    1.463
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2196
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.06
_refine_diff_density_max         1.534
_refine_diff_density_min         -0.822
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     608
_refine_ls_number_reflns         8712
_refine_ls_number_restraints     18
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0349
_refine_ls_R_factor_gt           0.0273
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0300P)^2^+12.2320P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0640
_refine_ls_wR_factor_ref         0.0731
_reflns_number_gt                7656
_reflns_number_total             8712
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            d4ce00436a2.cif
_cod_data_source_block           mo_151121e_0m-auto
_cod_depositor_comments
'Adding full bibliography for 7249087--7249094.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7249093