A Nickel(II)-Cornered Molecular Rectangle with Biscarbene and 4,4′-Bipyridine Bridging Groups
Hahn, F. Ekkehardt; Radloff, Christian; Pape, Tania; Hepp, Alexander; Organometallics 27 (2008) 6408–; doi:10.1021/om801007u

data_4072430
_publ_section_title
;
 A Nickel(II)-Cornered Molecular Rectangle with Biscarbene and
 4,4&#x2032;-Bipyridine Bridging Groups
;
_journal_issue                   24
_journal_name_full               Organometallics
_journal_page_first              6408
_journal_paper_doi               10.1021/om801007u
_journal_volume                  27
_journal_year                    2008
_chemical_formula_sum            'C94 H124 B4 F16 N12 Ni4 O2'
_chemical_formula_weight         2036.13
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 100.086(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   16.368(2)
_cell_length_b                   16.892(2)
_cell_length_c                   18.687(3)
_cell_measurement_reflns_used    900
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      22.5
_cell_measurement_theta_min      1
_cell_volume                     5086.9(12)
_computing_cell_refinement       'APEX2(Bruker AXS, 2007)'
_computing_data_collection       'APEX2(Bruker AXS, 2007)'
_computing_data_reduction        'SAINT,SADABS (Bruker AXS, 2007 )'
_computing_molecular_graphics
;
ORTEP3,L.J. Farrugia, J. Appl. Cryst. (1997) 30, 565
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 80
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'Omega and Phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0809
_diffrn_reflns_av_sigmaI/netI    0.0696
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            42223
_diffrn_reflns_theta_full        25.87
_diffrn_reflns_theta_max         25.87
_diffrn_reflns_theta_min         1.53
_exptl_absorpt_coefficient_mu    0.809
_exptl_absorpt_correction_T_max  0.9683
_exptl_absorpt_correction_T_min  0.7274
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
 Corrections were done with the SADABS program, utilizing the none merged
 raw data obtained from the integration process. Integration and final cell
 refinement were done with SAINT.

 SADABS reports ratio of Tmin/Tmax = 0.808197  

;
_exptl_crystal_colour            orange-brown
_exptl_crystal_density_diffrn    1.329
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'transparent plate'
_exptl_crystal_F_000             2128
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.04
_refine_diff_density_max         1.552
_refine_diff_density_min         -0.780
_refine_diff_density_rms         0.138
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.970
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     630
_refine_ls_number_reflns         9730
_refine_ls_number_restraints     24
_refine_ls_restrained_S_all      0.969
_refine_ls_R_factor_all          0.1664
_refine_ls_R_factor_gt           0.0959
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1754P)^2^+25.2287P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2650
_refine_ls_wR_factor_ref         0.3302
_reflns_number_gt                5168
_reflns_number_total             9730
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om801007u_si_001.cif
_cod_data_source_block           sad
_cod_original_cell_volume        5087.2(12)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4072430