(Ni2), (Ni3), and (Ni2+ Ni3): A Unique Example of Isolated and Cocrystallized Ni2 and Ni3 Complexes
Pampa Mukherjee; Michael G. B. Drew; Carlos J. Gómez-García; Ashutosh Ghosh; Inorganic Chemistry 48 (2009) 4817–4827; doi:10.1021/ic802385c

data_4302181
_publ_section_title
;
(Ni2), (Ni3), and (Ni2+ Ni3): A Unique Example of Isolated and
Cocrystallized Ni2 and Ni3 Complexes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4817
_journal_page_last               4827
_journal_paper_doi               10.1021/ic802385c
_journal_volume                  48
_journal_year                    2009
_chemical_formula_sum            'C26 H36 N4 Ni2 O6'
_chemical_formula_weight         618.00
_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                 103.77(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.056(5)
_cell_length_b                   16.355(3)
_cell_length_c                   8.5705(7)
_cell_measurement_reflns_used    6812
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.00
_cell_measurement_theta_min      2.43
_cell_volume                     1369.0(7)
_computing_cell_refinement       'Crysalis, Oxford Diffraction'
_computing_data_collection       'Crysalis, Oxford Diffraction'
_computing_data_reduction        'Crysalis, Oxford Diffraction'
_computing_molecular_graphics    PLATON(Spek,2004)
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_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.926
_diffrn_measured_fraction_theta_max 0.926
_diffrn_measurement_device       'Oxford Diffaction X-Calibur System'
_diffrn_measurement_method       '321 frames, counting time 10 s.'
_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  0.0404
_diffrn_reflns_av_sigmaI/netI    0.0903
_diffrn_reflns_limit_h_max       13
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_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -10
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_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.43
_diffrn_standards_decay_%        n/a
_diffrn_standards_interval_count n/a
_diffrn_standards_interval_time  n/a
_diffrn_standards_number         n/a
_exptl_absorpt_coefficient_mu    1.422
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.793
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'ABSPACK, Oxford Diffraction Ltd'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.499
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_diff_density_max         3.712
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_refine_diff_density_rms         0.127
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     174
_refine_ls_number_reflns         3687
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.928
_refine_ls_R_factor_all          0.0984
_refine_ls_R_factor_gt           0.0600
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
_refine_ls_weighting_details 
  w=1/[\s^2^(Fo^2^)+(0.0826P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1332
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_reflns_number_gt                2218
_reflns_number_total             3687
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic802385c_si_001_1.cif
_cod_data_source_block           1
_cod_original_cell_volume        1369.0(8)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4302181