Effect of ligand substitution on the SMM properties of three isostructural families of double-cubane Mn<sub>4</sub>Ln<sub>2</sub> coordination clusters.
Akhtar, Muhammad Nadeem; Lan, Yanhua; AlDamen, Murad A.; Zheng, Yan-Zhen; Anson, Christopher E.; Powell, Annie K.; Dalton transactions (Cambridge, England : 2003) 47 (2018) 3485–3495; doi:10.1039/c7dt04304j

data_7045387
_publ_section_title
;
 Effect of ligand substitution on the SMM properties of three
 isostructural families of double-cubane Mn<sub>4</sub>Ln<sub>2</sub>
 coordination clusters.
;
_journal_issue                   10
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3485
_journal_page_last               3495
_journal_paper_doi               10.1039/c7dt04304j
_journal_volume                  47
_journal_year                    2018
_chemical_formula_moiety         'C62 H74 Gd2 Mn4 N6 O28, 2(C2 H3 N)'
_chemical_formula_sum            'C66 H80 Gd2 Mn4 N8 O28'
_chemical_formula_weight         1967.64
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2018-01-10
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_audit_update_record
;
2018-01-12 deposited with the CCDC.
2018-01-24 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.040(11)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   12.9107(12)
_cell_length_b                   15.4585(10)
_cell_length_c                   18.9297(17)
_cell_measurement_reflns_used    8000
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      25.27
_cell_measurement_theta_min      2.18
_cell_volume                     3731.1(6)
_computing_cell_refinement       'IPDS 2.92 (Stoe & Cie GmbH, 1999)'
_computing_data_collection       'IPDS 2.92 (Stoe & Cie GmbH, 1999)'
_computing_data_reduction        'IPDS 2.92 (Stoe & Cie GmbH, 1999)'
_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    'SHELXTL 6.14 (BrukerAXS Inc., 2003)'
_diffrn_ambient_temperature      200.15
_diffrn_detector_area_resol_mean 6.667
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device_type  'Stoe IPDS'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0745
_diffrn_reflns_av_unetI/netI     0.0847
_diffrn_reflns_Laue_measured_fraction_full 0.958
_diffrn_reflns_Laue_measured_fraction_max 0.958
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            22837
_diffrn_reflns_point_group_measured_fraction_full 0.958
_diffrn_reflns_point_group_measured_fraction_max 0.958
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.350
_diffrn_reflns_theta_min         2.179
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    2.496
_exptl_absorpt_correction_T_max  0.746
_exptl_absorpt_correction_T_min  0.589
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
XPREP in SHELXTL 6.14 (BrukerAXS Inc., 2003)
;
_exptl_crystal_colour            orange
_exptl_crystal_colour_primary    orange
_exptl_crystal_density_diffrn    1.751
_exptl_crystal_description       block
_exptl_crystal_F_000             1968
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.708
_refine_diff_density_min         -0.438
_refine_diff_density_rms         0.121
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.949
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     494
_refine_ls_number_reflns         6556
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.949
_refine_ls_R_factor_all          0.0629
_refine_ls_R_factor_gt           0.0337
_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^)+(0.0175P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0652
_refine_ls_wR_factor_ref         0.0688
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4225
_reflns_number_total             6556
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt04304j2.cif
_cod_data_source_block           14-mn4gd2
_cod_depositor_comments
'Adding full bibliography for 7045382--7045403.cif.'
_cod_database_code               7045387
_shelx_shelxl_version_number     2017/1
_shelx_estimated_absorpt_t_max   0.754
_shelx_estimated_absorpt_t_min   0.649
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All O(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Restrained distances
 O3-H3 = O5-H5
 0.88 with sigma of 0.04
3.a Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C2(H2A,H2B), C3(H3A,H3B), C4(H4A,H4B), C5(H5A,H5B), C6(H6A,H6B),
 C7(H7A,H7B), C8(H8A,H8B), C9(H9A,H9B), C10(H10A,H10B)
3.b Aromatic/amide H refined with riding coordinates:
 C13(H13), C14(H14), C15(H15), C16(H16), C17(H17), C20(H20), C21(H21),
 C22(H22), C23(H23), C24(H24), C27(H27), C28(H28), C29(H29), C30(H30), C31(H31)
3.c Idealised Me refined as rotating group:
 C42(H42A,H42B,H42C)
;
_shelx_res_checksum              31047
_olex2_submission_special_instructions 'No special instructions were received'