Novel mononuclear Ln complexes with pyrazine-2-carboxylate and acetylacetonate co-ligands: remarkable Single Molecule Magnet behavior of Yb derivative
Gavrikov, Andrey Vyacheslavovich; Efimov, Nikolay; Dobrohotova, Zhanna; Ilyukhin, Andrey Borisovich; Vasilyev, Pavel Nikolaevich; Novotortsev, Vladimir M.; Dalton Trans.  (2017) –; doi:10.1039/C7DT02175E

data_7043876
_publ_section_title
;
 Novel mononuclear Ln complexes with pyrazine-2-carboxylate and
 acetylacetonate co-ligands: remarkable Single Molecule Magnet behavior of
 Yb derivative
;
_journal_name_full               'Dalton Trans.'
_journal_paper_doi               10.1039/C7DT02175E
_journal_year                    2017
_chemical_formula_moiety         'C15 H21 Er N2 O8'
_chemical_formula_sum            'C15 H21 Er N2 O8'
_chemical_formula_weight         524.6
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.3
_audit_creation_date             2017-03-24T17:54:05-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2017-06-08 deposited with the CCDC.
2017-08-01 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 105.8480(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.7499(8)
_cell_length_b                   29.727(3)
_cell_length_c                   8.2564(9)
_cell_measurement_reflns_used    9161
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      31.66
_cell_measurement_theta_min      2.65
_cell_volume                     1829.8(3)
_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-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXS-2016 (Sheldrick, 2015)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0928
_diffrn_reflns_av_unetI/netI     0.059
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       36
_diffrn_reflns_limit_k_min       -36
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            13406
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.848
_diffrn_reflns_theta_min         2.654
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.631
_exptl_absorpt_correction_T_max  0.7462
_exptl_absorpt_correction_T_min  0.4999
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2014/5'
_exptl_crystal_colour            pink
_exptl_crystal_density_diffrn    1.904
_exptl_crystal_description       block
_exptl_crystal_F_000             1028
_exptl_crystal_preparation       ', Magnetic properties'
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.465
_refine_diff_density_min         -2.6
_refine_diff_density_rms         0.17
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.607
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     239
_refine_ls_number_reflns         3527
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.609
_refine_ls_R_factor_all          0.0479
_refine_ls_R_factor_gt           0.045
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+2.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0864
_refine_ls_wR_factor_ref         0.0872
_reflns_Friedel_coverage         0
_reflns_number_gt                3357
_reflns_number_total             3527
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt02175e2.cif
_cod_data_source_block           6
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7043876
_shelx_res_checksum              87792