Use of 2-pyrimidineamidoxime to generate polynuclear homo-/heterometallic assemblies: synthesis, crystal structures and magnetic study with theoretical investigations on the exchange mechanism.
Gole, Bappaditya; Chakrabarty, Rajesh; Mukherjee, Sandip; Song, You; Mukherjee, Partha Sarathi; Dalton transactions (Cambridge, England : 2003) 39 (2010) 9766–9778; doi:10.1039/c0dt00353k

data_7026358
_publ_section_title
;
 Use of 2-pyrimidineamidoxime to generate polynuclear homo-/heterometallic
 assemblies: synthesis, crystal structures and magnetic study with
 theoretical investigations on the exchange mechanism.
;
_journal_issue                   41
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              9766
_journal_page_last               9778
_journal_paper_doi               10.1039/c0dt00353k
_journal_volume                  39
_journal_year                    2010
_chemical_formula_moiety         'C20 H18 Cu4 N17 O7, (N 3O), (2H O)'
_chemical_formula_sum            'C20 H20 Cu4 N18 O11'
_chemical_formula_weight         942.6760
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 121.934(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   27.924(6)
_cell_length_b                   16.597(3)
_cell_length_c                   15.514(3)
_cell_measurement_temperature    293(2)
_cell_volume                     6102(2)
_computing_cell_refinement       'BRUKER SMART'
_computing_data_collection       'BRUKER SMART'
_computing_data_reduction        'BRUKER SAINT'
_computing_molecular_graphics    'ORTEP-3 for Windows(Farrugia, 1997)'
_computing_publication_material  WinGX
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scan'
_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  0.1045
_diffrn_reflns_av_sigmaI/netI    0.1029
_diffrn_reflns_limit_h_max       37
_diffrn_reflns_limit_h_min       -39
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            59658
_diffrn_reflns_theta_full        30.77
_diffrn_reflns_theta_max         30.77
_diffrn_reflns_theta_min         1.50
_exptl_absorpt_coefficient_mu    2.826
_exptl_absorpt_correction_T_max  0.735
_exptl_absorpt_correction_T_min  0.683
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
'SADABS: Blessing, R. (1995), Acta Cryst., A51, 33'
_exptl_crystal_colour            'dark green'
_exptl_crystal_density_diffrn    2.050
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             3752
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.724
_refine_diff_density_min         -1.184
_refine_diff_density_rms         0.217
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     495
_refine_ls_number_reflns         9270
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.1760
_refine_ls_R_factor_gt           0.0659
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1178P)^2^+8.6046P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1651
_refine_ls_wR_factor_ref         0.2403
_reflns_number_gt                4120
_reflns_number_total             9270
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c0dt00353k.txt
_cod_data_source_block           complex2
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7026358