Charge Localization in a Dihydrazine Analogue of Tetramethyl-p-phenylenediamine Radical Cation
Stephen F. Nelsen; Rustem F. Ismagilov; Douglas R. Powell; Journal of the American Chemical Society 118 (1996) 6313–6314; doi:10.1021/ja960500l

data_4117157
_publ_contact_author
; 
    Prof. Stephen F. Nelsen
    Department of Chemsitry 
    University of Wisconsin 
    Madison, WI  53706-1396  USA 
;
_publ_contact_author_email       nelsen@chem.wisc.edu
_publ_contact_author_fax         '608 262 0381'
_publ_contact_author_phone       '608 262 3426'
_publ_section_title
;
 Charge Localization in a Dihydrazine Analogue of
 Tetramethyl-p-phenylenediamine Radical Cation
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_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6313
_journal_page_last               6314
_journal_paper_doi               10.1021/ja960500l
_journal_volume                  118
_journal_year                    1996
_chemical_formula_sum            'C26 H42 N4'
_chemical_formula_weight         410.64
_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
_cell_angle_alpha                94.301(2)
_cell_angle_beta                 99.039(2)
_cell_angle_gamma                105.083(2)
_cell_formula_units_Z            1
_cell_length_a                   6.5000(5)
_cell_length_b                   7.2299(5)
_cell_length_c                   13.3764(10)
_cell_measurement_reflns_used    2810
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      25.9
_cell_measurement_theta_min      2.0
_cell_volume                     594.98(8)
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      133(2)
_diffrn_measurement_device       'Siemens P4-CCD'
_diffrn_measurement_method       'phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0265
_diffrn_reflns_av_sigmaI/netI    0.0246
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            3684
_diffrn_reflns_theta_max         25.96
_diffrn_reflns_theta_min         1.55
_diffrn_standards_decay_%        0.52
_diffrn_standards_number         63
_exptl_absorpt_coefficient_mu    0.068
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.146
_exptl_crystal_description       'transparent prism'
_exptl_crystal_F_000             226
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.146
_refine_diff_density_min         -0.125
_refine_diff_density_rms         0.033
_refine_ls_extinction_coef       0.0441(68)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_all   1.058
_refine_ls_goodness_of_fit_obs   1.033
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         2048
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_restrained_S_obs      1.033
_refine_ls_R_factor_all          0.0524
_refine_ls_R_factor_obs          0.0450
_refine_ls_shift/esd_max         0.003
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0492P)^2^+0.2033P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1226
_refine_ls_wR_factor_obs         0.1109
_reflns_number_observed          1785
_reflns_number_total             2049
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ja960500l_2.cif
_cod_data_source_block           compound_2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0492P)^2^+0.2033P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0492P)^2^+0.2033P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               4117157