New Chemistry of the Triply Bonded Divanadium (V24+) Unit and Reduction to an Unprecedented V23+ Core
F. Albert Cotton; Elizabeth A. Hillard; Carlos A. Murillo; Xiaoping Wang; Inorganic Chemistry 42 (2003) 6063–6070; doi:10.1021/ic034646e

data_4314290
_publ_section_title
;
 New Chemistry of the Triply Bonded Divanadium (V24+) Unit and Reduction
 to an Unprecedented V23+ Core
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              6063
_journal_page_last               6070
_journal_paper_doi               10.1021/ic034646e
_journal_volume                  42
_journal_year                    2003
_chemical_formula_moiety         'C56 H48 N8 V2'
_chemical_formula_sum            'C56 H48 N8 V2'
_chemical_formula_weight         934.90
_chemical_melting_point          ?
_chemical_name_systematic
;
 tetrakis(anilinopyridyl-N,N')divanadium(II,II), benzene solvate
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                97.989(2)
_cell_angle_beta                 109.990(2)
_cell_angle_gamma                101.325(2)
_cell_formula_units_Z            1
_cell_length_a                   9.9082(10)
_cell_length_b                   10.1633(10)
_cell_length_c                   12.7609(13)
_cell_measurement_reflns_used    6277
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      27.528
_cell_measurement_theta_min      2.274
_cell_volume                     1154.1(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'SHELXTL v5.05 (Siemens, 1996)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.937
_diffrn_measured_fraction_theta_max 0.937
_diffrn_measurement_device_type  'Bruker SMART area detector'
_diffrn_measurement_method       /w-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0128
_diffrn_reflns_av_sigmaI/netI    0.0196
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            7930
_diffrn_reflns_theta_full        27.53
_diffrn_reflns_theta_max         27.53
_diffrn_reflns_theta_min         1.74
_diffrn_standards_decay_%        0
_diffrn_standards_number         'none (area detector data)'
_exptl_absorpt_coefficient_mu    0.453
_exptl_absorpt_correction_T_max  0.8499
_exptl_absorpt_correction_T_min  0.813
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.345
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             486
_exptl_crystal_size_max          0.75
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.37
_refine_diff_density_max         0.311
_refine_diff_density_min         -0.364
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     298
_refine_ls_number_reflns         4987
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0322
_refine_ls_R_factor_gt           0.0299
_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^)+(0.0447P)^2^+0.4391P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0848
_refine_ls_wR_factor_ref         0.0868
_reflns_number_gt                4651
_reflns_number_total             4987
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            ic034646esi20030610_035606_6.cif
_cod_data_source_block           compound5
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_database_code               4314290