Octanuclear Heterobimetallic {Ni4Ln4} Assemblies Possessing Ln4 Square Grid [2 ×2] Motifs: Synthesis, Structure, and Magnetism.
Biswas, Sourav; Goura, Joydeb; Das, Sourav; Topping, Craig V.; Brambleby, Jamie; Goddard, Paul A.; Chandrasekhar, Vadapalli; Inorganic chemistry 55 (2016) 8422–8436; doi:10.1021/acs.inorgchem.6b01019

data_4348148
_publ_section_title
;
 Octanuclear Heterobimetallic {Ni4Ln4} Assemblies Possessing Ln4 Square
 Grid [2 \\times 2] Motifs: Synthesis, Structure, and Magnetism.
;
_journal_issue                   17
_journal_name_full               'Inorganic chemistry'
_journal_page_first              8422
_journal_page_last               8436
_journal_paper_doi               10.1021/acs.inorgchem.6b01019
_journal_volume                  55
_journal_year                    2016
_chemical_formula_moiety         'C88 H104 N12 Ni4 O24 Tb4, 4(Cl), 16(O)'
_chemical_formula_sum            'C88 H104 Cl4 N12 Ni4 O40 Tb4'
_chemical_formula_weight         2982.15
_space_group_crystal_system      cubic
_space_group_IT_number           220
_space_group_name_Hall           'I -4bd 2c 3'
_space_group_name_H-M_alt        'I -4 3 d'
_atom_sites_solution_hydrogens   mixed
_audit_creation_date             2016-04-11
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            12
_cell_length_a                   34.0802(16)
_cell_length_b                   34.0802(16)
_cell_length_c                   34.0802(16)
_cell_measurement_reflns_used    9933
_cell_measurement_temperature    100
_cell_measurement_theta_max      24.70
_cell_measurement_theta_min      2.24
_cell_volume                     39583(3)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0593
_diffrn_reflns_av_unetI/netI     0.0193
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       39
_diffrn_reflns_limit_h_min       -40
_diffrn_reflns_limit_k_max       40
_diffrn_reflns_limit_k_min       -39
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            134249
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        24.733
_diffrn_reflns_theta_max         24.733
_diffrn_reflns_theta_min         4.143
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.826
_exptl_absorpt_correction_T_max  0.7451
_exptl_absorpt_correction_T_min  0.5765
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.1519 before and 0.0661 after correction.
The Ratio of minimum to maximum transmission is 0.7737.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            green
_exptl_crystal_colour_primary    green
_exptl_crystal_density_diffrn    1.501
_exptl_crystal_description       block
_exptl_crystal_F_000             17712
_exptl_crystal_size_max          0.02
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.117
_refine_diff_density_min         -0.427
_refine_diff_density_rms         0.081
_refine_ls_abs_structure_details
;
 Flack x determined using 2479 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.003(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     374
_refine_ls_number_reflns         5639
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0290
_refine_ls_R_factor_gt           0.0266
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0432P)^2^+155.4707P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0687
_refine_ls_wR_factor_ref         0.0701
_reflns_Friedel_coverage         0.896
_reflns_Friedel_fraction_full    0.996
_reflns_Friedel_fraction_max     0.996
_reflns_number_gt                5383
_reflns_number_total             5639
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ic6b01019_si_002.cif
_cod_data_source_block           Complex2
_cod_original_cell_volume        39583(6)
_cod_database_code               4348148
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H,H) groups
2. Uiso/Uaniso restraints and constraints
Uanis(Cl2) \\sim Ueq: with sigma of 0.05 and sigma for terminal atoms of 0.05
3.a Secondary CH2 refined with riding coordinates:
 C11(H11A,H11B), C20(H20A,H20B), C9(H9A,H9B), C8(H8A,H8B), C10(H10A,H10B),
 C21(H21A,H21B)
3.b Aromatic/amide H refined with riding coordinates:
 C17(H17), C14(H14), C12(H12), C7(H7), C4(H4), C2(H2)
3.c Idealised Me refined as rotating group:
 C16(H16A,H16B,H16C), C24(H24A,H24B,H24C)
;
_shelx_res_checksum              80499
_shelx_hkl_checksum              11342
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'