Reactions of Cp*2Yb(THF)2with TCNQ and TCNB. A Novel Type of Reactivity of TCNQ toward Metallocenes. The First Example of the π-Dimer [TCNB2]2−
Trifonov, Alexander A.; Gudilenkov, Ivan D.; Fukin, Georgy K.; Cherkasov, Anton V.; Larionova, Julia; Organometallics 28 (2009) 3421–; doi:10.1021/om9001318

data_4069299
_publ_section_title
;
 Reactions of Cp*2Yb(THF)2with TCNQ and TCNB. A Novel Type of Reactivity
 of TCNQ toward Metallocenes. The First Example of the \p-Dimer
 [TCNB2]2&#x2212;
;
_journal_issue                   12
_journal_name_full               Organometallics
_journal_page_first              3421
_journal_paper_doi               10.1021/om9001318
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C60 H64 N8 Yb2'
_chemical_formula_weight         1243.27
_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     patt
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.7940(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.6301(9)
_cell_length_b                   10.3712(5)
_cell_length_c                   32.5798(16)
_cell_measurement_reflns_used    660
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29
_cell_measurement_theta_min      2
_cell_volume                     5254.3(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0944
_diffrn_reflns_av_sigmaI/netI    0.1066
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            28419
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.06
_exptl_absorpt_coefficient_mu    3.585
_exptl_absorpt_correction_T_max  0.9001
_exptl_absorpt_correction_T_min  0.6730
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1998a)'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.572
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2480
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.03
_refine_diff_density_max         1.735
_refine_diff_density_min         -0.930
_refine_diff_density_rms         0.163
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.984
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     631
_refine_ls_number_reflns         9241
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.984
_refine_ls_R_factor_all          0.1088
_refine_ls_R_factor_gt           0.0466
_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^)+(0.0100P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0667
_refine_ls_wR_factor_ref         0.0754
_reflns_number_gt                5395
_reflns_number_total             9241
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om9001318_si_002.cif
_cod_data_source_block           ybcpm
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4069299