First tetrameric NiII cluster with planar triangular topology exhibiting ferromagnetic pathways
Du, Miao; Bu, Xian-He; Guo, Ya-Mei; Zhang, Lei; Liao, Dai-Zheng; Ribas, Joan; Chemical Communications  (2002) 1478–; doi:10.1039/b203487p

data_7114448
_publ_section_title
;
 First tetrameric NiII cluster with planar triangular topology exhibiting
 ferromagnetic pathways
;
_journal_issue                   14
_journal_name_full               'Chemical Communications'
_journal_page_first              1478
_journal_paper_doi               10.1039/b203487p
_journal_year                    2002
_chemical_formula_sum            'C36 H68 Cl2 N6 Ni4 O24'
_chemical_formula_weight         1274.70
_chemical_name_systematic
; 
? 
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 98.557(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   24.253(7)
_cell_length_b                   12.158(4)
_cell_length_c                   8.378(2)
_cell_measurement_reflns_used    3318
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      25.02
_cell_measurement_theta_min      1.88
_cell_volume                     2442.9(12)
_computing_data_reduction        SAINT
_computing_molecular_graphics    XP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Smart 1000 CCD'
_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  0.0168
_diffrn_reflns_av_sigmaI/netI    0.0228
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            5084
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         1.88
_exptl_absorpt_coefficient_mu    1.718
_exptl_absorpt_correction_T_max  0.8469
_exptl_absorpt_correction_T_min  0.7250
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.733
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1328
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.879
_refine_diff_density_min         -0.627
_refine_diff_density_rms         0.070
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     338
_refine_ls_number_reflns         3350
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0358
_refine_ls_R_factor_gt           0.0329
_refine_ls_shift/su_max          0.011
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0576P)^2^+3.6917P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0878
_refine_ls_wR_factor_ref         0.0906
_reflns_number_gt                3197
_reflns_number_total             3350
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b203487p.txt
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN'
changed to 'multi-scan' according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_cell_volume        2443.0(12)
_cod_original_sg_symbol_H-M      C2
_cod_database_code               7114448