SN versus S+N-: An Experimental and Theoretical Charge Density Study
D. Leusser; J. Henn; N. Kocher; B. Engels; D. Stalke; Journal of the American Chemical Society 126 (2004) 1781–1793; doi:10.1021/ja038941+

data_4112228
_publ_contact_author             'Prof. Dr. Dietmar Stalke'
_publ_contact_author_email       dstalke@chemie.uni-wuerzburg.de
_publ_section_title
;
 SN versus S+N-: An Experimental and Theoretical Charge Density Study
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1781
_journal_page_last               1793
_journal_paper_doi               10.1021/ja038941+
_journal_volume                  126
_journal_year                    2004
_chemical_formula_sum            'C25 H58 N6 S2'
_chemical_formula_weight         506.89
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 91.0410(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   29.8239(8)
_cell_length_b                   11.4206(3)
_cell_length_c                   18.0801(4)
_cell_measurement_reflns_used    9210
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.3
_cell_measurement_theta_min      2.2
_cell_volume                     6157.2(3)
_computing_cell_refinement       'SAINT-NT V5/6.0'
_computing_data_collection       'SMART-NT V5.6'
_computing_data_reduction        'SAINT-NT V5/6.0'
_computing_molecular_graphics    'SHELXTL-NT V5.1'
_computing_publication_material  'SHELXTL-NT V5.1'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Smart Apex with D8-Goniometer'
_diffrn_measurement_method       'omega scan'
_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
'0.0435 (low angle batch), 0.0646 (high angle batch)'
_diffrn_reflns_av_sigmaI/netI
'0.0121 (low angle batch), 0.0584 (high angle batch)'
_diffrn_reflns_limit_h_max       66
_diffrn_reflns_limit_h_min       -66
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number
'136761 (low angle batch), 217620 (high angle batch)'
_diffrn_reflns_theta_full        52.16
_diffrn_reflns_theta_max         52.16
_diffrn_reflns_theta_min         1.37
_exptl_absorpt_coefficient_mu    0.196
_exptl_absorpt_correction_T_max  1.0
_exptl_absorpt_correction_T_min  0.97
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'MULABS implemented in PLATON'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.094
_exptl_crystal_description       blocks
_exptl_crystal_F_000             2256
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.762
_refine_diff_density_min         -0.234
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.969
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     475
_refine_ls_number_reflns         35375
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.969
_refine_ls_R_factor_all          0.0487
_refine_ls_R_factor_gt           0.0315
_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^)+(0.0538P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0865
_refine_ls_wR_factor_ref         0.0932
_reflns_number_gt                25854
_reflns_number_total             35375
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0389412Bsi20031008_100545.cif
_cod_data_source_block           sulfon
_cod_database_code               4112228