Pyrazine-2-amidoxime Ni(II) Complexes: From Ferromagnetic Cluster to Antiferromagnetic Layer
Guang-Yu An; Cong-Min Ji; Ai-Li Cui; Hui-Zhong Kou; Inorganic Chemistry 50 (2011) 1079–1083; doi:10.1021/ic1022714

data_4324377
_publ_contact_author_address
;
Department of Chemistry
Tsinghua University
Beijing 100084
People's Republic of China
;
_publ_contact_author_email       kouhz@mail.tsinghua.edu.cn
_publ_contact_author_name        'Dr. Hui-Zhong Kou'
_publ_contact_author_phone       86-10-62771748
_publ_section_title
;
 Pyrazine-2-amidoxime Ni(II) Complexes: From Ferromagnetic Cluster to
 Antiferromagnetic Layer
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              1079
_journal_page_last               1083
_journal_paper_doi               10.1021/ic1022714
_journal_volume                  50
_journal_year                    2011
_chemical_formula_sum            'C50 H48 Cl2 N22 Ni4 O12'
_chemical_formula_weight         1454.84
_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                 95.504(2)
_cell_angle_gamma                90.00
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_cell_length_b                   19.2521(13)
_cell_length_c                   23.2170(14)
_cell_measurement_reflns_used    4239
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.00
_cell_measurement_theta_min      3.03
_cell_volume                     6847.4(8)
_computing_cell_refinement       'crystalstructure 3.6.0 (Rigaku, 2004)'
_computing_data_collection       'crystalstructure 3.6.0 (Rigaku, 2004)'
_computing_data_reduction        'SHELXL-97 (Sheldrick, 1997)'
_computing_molecular_graphics    'XP (Sheldrick, 1998)'
_computing_publication_material  'XP (Sheldrick, 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 0.77
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID IP'
_diffrn_measurement_method       '\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  0.0566
_diffrn_reflns_av_sigmaI/netI    0.0490
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_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
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_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            28926
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    1.230
_exptl_absorpt_correction_T_max  0.950
_exptl_absorpt_correction_T_min  0.702
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR; Higashi, 1995'
_exptl_crystal_colour            'red brown'
_exptl_crystal_density_diffrn    1.411
_exptl_crystal_description       platelet
_exptl_crystal_F_000             2976
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.987
_refine_diff_density_min         -0.551
_refine_diff_density_rms         0.112
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.011
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     406
_refine_ls_number_reflns         6699
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.011
_refine_ls_R_factor_all          0.0901
_refine_ls_R_factor_gt           0.0594
_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^)+(0.1253P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1692
_refine_ls_wR_factor_ref         0.1963
_reflns_number_gt                4239
_reflns_number_total             6699
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic1022714_si_002_2.cif
_cod_data_source_block           1
_cod_database_code               4324377