Unusual Magnetic Property Associated with Dimerization within a Nickel Tetramer
Xiaoming Ren; Qingjin Meng; You Song; Chuanjiang Hu; Changsheng Lu; Xiaoyuan Chen; Ziling Xue; Inorganic Chemistry 41 (2002) 5931–5933; doi:10.1021/ic0255860

data_4318857
_publ_section_title
;
 Unusual Magnetic Property Associated with Dimerization within a Nickel
 Tetramer
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5931
_journal_page_last               5933
_journal_paper_doi               10.1021/ic0255860
_journal_volume                  41
_journal_year                    2002
_chemical_formula_sum            'C20 H13 N6 Ni S4'
_chemical_formula_weight         524.31
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                74.00(3)
_cell_angle_beta                 77.30(3)
_cell_angle_gamma                68.04(3)
_cell_formula_units_Z            4
_cell_length_a                   11.220(2)
_cell_length_b                   14.295(3)
_cell_length_c                   15.609(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      13.4
_cell_measurement_theta_min      11.1
_cell_volume                     2212.7(9)
_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  'FR590 CAD4'
_diffrn_measurement_method       '2\q/\w 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  0.0169
_diffrn_reflns_av_sigmaI/netI    0.0259
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            8207
_diffrn_reflns_theta_full        24.97
_diffrn_reflns_theta_max         24.97
_diffrn_reflns_theta_min         1.37
_diffrn_standards_decay_%        0.5
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    1.275
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.574
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1068
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.5
_exptl_crystal_size_min          0.4
_refine_diff_density_max         0.323
_refine_diff_density_min         -0.272
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     559
_refine_ls_number_reflns         7766
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0645
_refine_ls_R_factor_gt           0.0321
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0550P)^2^+1.4218P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0996
_refine_ls_wR_factor_ref         0.1155
_reflns_number_gt                5239
_reflns_number_total             7766
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0255860_s3_1.cif
_cod_data_source_block           Complex1_293K
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_cell_volume        2212.7(8)
_cod_database_code               4318857