Strong direct exchange coupling and single-molecule magnetism in indigo-bridged lanthanide dimers.
Guo, Fu-Sheng; Layfield, Richard A.; Chemical communications (Cambridge, England) 53 (2017) 3130–3133; doi:10.1039/c7cc01046j

data_7119720
_publ_section_title
;
 Strong direct exchange coupling and single-molecule magnetism in
 indigo-bridged lanthanide dimers.
;
_journal_issue                   21
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              3130
_journal_page_last               3133
_journal_paper_doi               10.1039/c7cc01046j
_journal_volume                  53
_journal_year                    2017
_chemical_formula_moiety         'C76 H108 Gd2 K2 N2 O7'
_chemical_formula_sum            'C76 H108 Gd2 K2 N2 O7'
_chemical_formula_weight         1554.34
_chemical_properties_physical    ', Air-sensitive,Moisture-sensitive'
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2016-10-25
_audit_creation_method
;
Olex2 1.2
(compiled 2016.09.09 svn.r3337 for OlexSys, GUI svn.r5227)
;
_audit_update_record
;
2017-02-07 deposited with the CCDC.
2017-02-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 134.109(14)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   16.6471(13)
_cell_length_b                   11.6604(4)
_cell_length_c                   26.166(2)
_cell_measurement_reflns_used    7023
_cell_measurement_temperature    150.03(10)
_cell_measurement_theta_max      28.5640
_cell_measurement_theta_min      3.7910
_cell_volume                     3646.9(10)
_computing_cell_refinement       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      150.03(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 8.0714
_diffrn_detector_type            Eos
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w    -41.00  90.00   1.00    4.00    --   18.86   0.00 -30.00  131
  2  \w     70.00  95.00   1.00    4.00    --   18.86 178.00 -30.00   25
  3  \w     63.00  92.00   1.00    4.00    --   18.86 178.00   0.00   29
  4  \w    -45.00   1.00   1.00    4.00    --   18.86 -57.00 -30.00   46
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Single source at offset, Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.0335868000
_diffrn_orient_matrix_UB_12      -0.0111039000
_diffrn_orient_matrix_UB_13      -0.0069311000
_diffrn_orient_matrix_UB_21      0.0169471000
_diffrn_orient_matrix_UB_22      -0.0530353000
_diffrn_orient_matrix_UB_23      0.0183309000
_diffrn_orient_matrix_UB_31      -0.0459476000
_diffrn_orient_matrix_UB_32      -0.0276125000
_diffrn_orient_matrix_UB_33      -0.0322454000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0328
_diffrn_reflns_av_unetI/netI     0.0575
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            15277
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.999
_diffrn_reflns_theta_min         3.271
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    1.969
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.92684
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.41 (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            red
_exptl_crystal_colour_primary    red
_exptl_crystal_density_diffrn    1.415
_exptl_crystal_description       block
_exptl_crystal_F_000             1600
_exptl_crystal_preparation       ', Magnetic properties'
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.856
_refine_diff_density_min         -0.721
_refine_diff_density_rms         0.108
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     434
_refine_ls_number_reflns         7156
_refine_ls_number_restraints     48
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0458
_refine_ls_R_factor_gt           0.0352
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0216P)^2^+2.4568P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0673
_refine_ls_wR_factor_ref         0.0743
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5963
_reflns_number_total             7156
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7cc01046j2.cif
_cod_data_source_block           aral496
_cod_depositor_comments
'Adding full bibliography for 7119716--7119721.cif.'
_cod_original_cell_volume        3646.9(8)
_cod_database_code               7119720
_chemical_oxdiff_usercomment     Gd
_reflns_odcompleteness_completeness 99.67
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Uiso/Uaniso restraints and constraints
O4 \\sim C40 \\sim C39 \\sim C38 \\sim C37: within 2A with sigma of 0.04 and
sigma for terminal atoms of 0.08
Uanis(O4) \\sim Ueq: with sigma of 0.01 and sigma for terminal atoms of 0.02
Uanis(C35) \\sim Ueq, Uanis(C36) \\sim Ueq: with sigma of 0.005 and sigma for
terminal atoms of 0.01
3. Others
 Fixed Sof: O4(0.5) C37(0.5) H37A(0.5) H37B(0.5) C38(0.5) H38A(0.5) H38B(0.5)
 C39(0.5) H39A(0.5) H39B(0.5) C40(0.5) H40A(0.5) H40B(0.5)
4.a Secondary CH2 refined with riding coordinates:
 C33(H33A,H33B), C34(H34A,H34B), C35(H35A,H35B), C36(H36A,H36B), C37(H37A,
 H37B), C38(H38A,H38B), C39(H39A,H39B), C40(H40A,H40B), C29(H29A,H29B),
 C30(H30A,H30B), C31(H31A,H31B), C32(H32A,H32B)
4.b Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C6(H6), C7(H7)
4.c Idealised Me refined as rotating group:
 C14(H14A,H14B,H14C), C15(H15A,H15B,H15C), C16(H16A,H16B,H16C), C17(H17A,H17B,
 H17C), C18(H18A,H18B,H18C), C24(H24A,H24B,H24C), C25(H25A,H25B,H25C), C26(H26A,
 H26B,H26C), C27(H27A,H27B,H27C), C28(H28A,H28B,H28C)
;
_shelx_res_checksum              32486
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.158
_oxdiff_exptl_absorpt_empirical_full_min 0.790