Nickel(II) Complexes with Tetra- and Pentadentate Aminopyridine Ligands: Synthesis, Structure, Electrochemistry, and Reduction to Nickel(I) Species
Sergey V. Kryatov; B. Sharmila Mohanraj; Vladislav V. Tarasov; Olga P. Kryatova; Elena V. Rybak-Akimova; Bharathi Nuthakki; James F. Rusling; Richard J. Staples; Alexander Y. Nazarenko; Inorganic Chemistry 41 (2002) 923–930; doi:10.1021/ic010397n

data_4317539
_publ_section_title
;
 Nickel(II) Complexes with Tetra- and Pentadentate Aminopyridine Ligands:
 Synthesis, Structure, Electrochemistry, and Reduction to Nickel(I)
 Species
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              923
_journal_page_last               930
_journal_paper_doi               10.1021/ic010397n
_journal_volume                  41
_journal_year                    2002
_chemical_formula_sum            'C18 H26 Cl2 N4 Ni O8'
_chemical_formula_weight         556.04
_chemical_name_systematic
; 
  ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 97.508(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.599(6)
_cell_length_b                   9.111(4)
_cell_length_c                   16.219(6)
_cell_measurement_temperature    293(2)
_cell_volume                     2285.3(16)
_computing_cell_refinement       'SMART (BRUKER, V5.054, 1998)'
_computing_data_collection       'ASTRO (BRUKER, V5.007, 1997)'
_computing_data_reduction        'SAINT (BRUKER, V6.01, 1999)'
_computing_molecular_graphics    'SHELXTL (BRUKER, 1998, V5.1)'
_computing_publication_material  'XCIF (Sheldrick and BRUKER, 1997, V5.1)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_method       '\w, 0.3 deg'
_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  0.0492
_diffrn_reflns_av_sigmaI/netI    0.0524
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            16544
_diffrn_reflns_theta_full        28.37
_diffrn_reflns_theta_max         28.37
_diffrn_reflns_theta_min         1.32
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.135
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.616
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1152
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.767
_refine_diff_density_min         -0.403
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     325
_refine_ls_number_reflns         5694
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.099
_refine_ls_R_factor_all          0.0673
_refine_ls_R_factor_gt           0.0458
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0491P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1111
_refine_ls_wR_factor_ref         0.1174
_reflns_number_gt                3877
_reflns_number_total             5694
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic010397n_2.cif
_cod_data_source_block           era8
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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        2285.5(15)
_cod_database_code               4317539