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_7026359
_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 Cl2 Cu2 N16 Ni2 O4, 2(O)'
_chemical_formula_sum            'C20 H18 Cl2 Cu2 N16 Ni2 O5'
_chemical_formula_weight         893.85
_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                66.030(2)
_cell_angle_beta                 83.795(2)
_cell_angle_gamma                65.826(2)
_cell_formula_units_Z            1
_cell_length_a                   8.6134(11)
_cell_length_b                   9.7382(12)
_cell_length_c                   10.3083(13)
_cell_measurement_temperature    293(2)
_cell_volume                     719.03(16)
_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 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0251
_diffrn_reflns_av_sigmaI/netI    0.0290
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            7421
_diffrn_reflns_theta_full        26.36
_diffrn_reflns_theta_max         26.36
_diffrn_reflns_theta_min         2.17
_exptl_absorpt_coefficient_mu    3.005
_exptl_absorpt_correction_T_max  0.5448
_exptl_absorpt_correction_T_min  0.4975
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
'SADABS: Blessing, R. (1995), Acta Cryst., A51, 33'
_exptl_crystal_colour            'dark brown'
_exptl_crystal_density_diffrn    2.074
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             450
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.678
_refine_diff_density_min         -0.464
_refine_diff_density_rms         0.092
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.087
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         2921
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.087
_refine_ls_R_factor_all          0.0391
_refine_ls_R_factor_gt           0.0316
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0376P)^2^+0.9348P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0783
_refine_ls_wR_factor_ref         0.0817
_reflns_number_gt                2527
_reflns_number_total             2921
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c0dt00353k.txt
_cod_data_source_block           complex3
_cod_database_code               7026359