Double N-H bond activation of N,N'-bis-substituted hydrazines with stable N-heterocyclic silylene.
Azhakar, Ramachandran; Ghadwal, Rajendra S.; Roesky, Herbert W.; Hey, Jakob; Stalke, Dietmar; Dalton transactions (Cambridge, England : 2003) 41 (2012) 1529–1533; doi:10.1039/c1dt11708d

data_7017942
_publ_section_title
;
 Double N-H bond activation of N,N'-bis-substituted hydrazines with stable
 N-heterocyclic silylene.
;
_journal_issue                   5
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1529
_journal_page_last               1533
_journal_paper_doi               10.1039/c1dt11708d
_journal_volume                  41
_journal_year                    2012
_chemical_formula_moiety         'C35 H52 N4 O4 Si'
_chemical_formula_sum            'C35 H52 N4 O4 Si'
_chemical_formula_weight         620.90
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 94.780(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.2681(14)
_cell_length_b                   12.0341(12)
_cell_length_c                   21.837(2)
_cell_measurement_reflns_used    8587
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      17.382
_cell_measurement_theta_min      2.2665
_cell_volume                     3474.6(6)
_computing_cell_refinement       'SAINT V7.68A'
_computing_data_collection       'APEX2 v2008.11'
_computing_data_reduction        'SAINT V7.46A'
_computing_molecular_graphics    'XSHELL v4.01'
_computing_publication_material  'XSHELL v4.01'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker APEX II Quazar'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  'INCOATEC mirror optics'
_diffrn_radiation_source         'INCOATEC Ag I\mS microfocus source'
_diffrn_radiation_type           AgK\a
_diffrn_radiation_wavelength     0.56086
_diffrn_reflns_av_R_equivalents  0.0576
_diffrn_reflns_av_sigmaI/netI    0.0306
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            97129
_diffrn_reflns_theta_full        21.07
_diffrn_reflns_theta_max         21.06
_diffrn_reflns_theta_min         1.22
_exptl_absorpt_coefficient_mu    0.065
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9371
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2008/2'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.187
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1344
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.337
_refine_diff_density_min         -0.334
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     440
_refine_ls_number_reflns         7620
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.100
_refine_ls_R_factor_all          0.0600
_refine_ls_R_factor_gt           0.0456
_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^)+(0.0485P)^2^+1.9805P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1119
_refine_ls_wR_factor_ref         0.1181
_reflns_number_gt                6297
_reflns_number_total             7620
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1dt11708d.txt
_cod_data_source_block           p21c
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7017942