A family of cubane cobalt and nickel clusters: Syntheses, structures and magnetic properties
Shu-Hua Zhang; Yi Dong Zhang; Hua Hong Zou; Jing Jing Guo; He Ping Li; You Song; Hong Liang; Inorganica Chimica Acta 396 (2013) 119–125; doi:10.1016/j.ica.2012.10.032

data_1512998
_publ_section_title
;
 A family of cubane cobalt and nickel clusters: Syntheses, structures and
 magnetic properties
;
_journal_name_full
;
Inorganica Chimica Acta
;
_journal_page_first              119
_journal_page_last               125
_journal_paper_doi               10.1016/j.ica.2012.10.032
_journal_volume                  396
_journal_year                    2013
_chemical_formula_moiety         'C40 H56 Ni4 O20'
_chemical_formula_sum            'C40 H56 Ni4 O20'
_chemical_formula_weight         1091.69
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   22.447(2)
_cell_length_b                   22.447(2)
_cell_length_c                   9.628(1)
_cell_measurement_reflns_used    3269
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.49
_cell_measurement_theta_min      2.30
_cell_volume                     4851.2(8)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0389
_diffrn_reflns_av_sigmaI/netI    0.0314
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            10701
_diffrn_reflns_theta_full        25.49
_diffrn_reflns_theta_max         25.49
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    1.602
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.495
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2272
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.260
_refine_diff_density_min         -0.233
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     147
_refine_ls_number_reflns         2253
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.079
_refine_ls_R_factor_all          0.0617
_refine_ls_R_factor_gt           0.0358
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0340P)^2^+8.4041P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0800
_refine_ls_wR_factor_ref         0.0934
_reflns_number_gt                1612
_reflns_number_total             2253
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ICA-2013-396-119-125-2.cif
_cod_data_source_block           ni
_cod_original_cell_volume        4851.3(8)
_cod_original_sg_symbol_Hall     ' -I 4ad'
_cod_original_sg_symbol_H-M      'I4(1)/a  '
_cod_database_code               1512998