N,N'-Diamidoketenimines via Coupling of Isocyanides to an N-Heterocyclic Carbene
Todd W. Hudnall; Eric J. Moorhead; Dmitry G. Gusev; Christopher W. Bielawski; Journal of Organic Chemistry 75 (2010) 2763–2766; doi:10.1021/jo100427g

data_4025370
_publ_section_title
;
 N,N'-Diamidoketenimines via Coupling of Isocyanides to an N-Heterocyclic
 Carbene
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              2763
_journal_page_last               2766
_journal_paper_doi               10.1021/jo100427g
_journal_volume                  75
_journal_year                    2010
_chemical_formula_moiety         N,N-(Dipp)-2,4-Oxo-3,3-(Me2)-1-CN-(C4H9)
_chemical_formula_sum            'C35 H49 N3 O2'
_chemical_formula_weight         543.77
_chemical_name_common            6-KetoDipp-nBu-isocyanide
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.072(4)
_cell_length_b                   17.495(4)
_cell_length_c                   9.4424(19)
_cell_measurement_temperature    150(2)
_cell_volume                     3315.8(12)
_computing_cell_refinement       'Collect software, Nonius B.V. 1998'
_computing_data_collection       'Collect software, Nonius B.V. 1998'
_computing_data_reduction
'DENZO and Scalepack (Otwinoski and Minor, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       '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  0.0140
_diffrn_reflns_av_sigmaI/netI    0.0239
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            5429
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.65
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.089
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1184
_exptl_crystal_size_max          .364
_exptl_crystal_size_mid          .326
_exptl_crystal_size_min          .280
_refine_diff_density_max         1.074
_refine_diff_density_min         -0.683
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     202
_refine_ls_number_reflns         2971
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.0901
_refine_ls_R_factor_gt           0.0747
_refine_ls_shift/su_max          0.033
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+5.8004P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1362
_refine_ls_wR_factor_ref         0.1452
_reflns_number_gt                2350
_reflns_number_total             2971
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo100427g_si_003_1.cif
_cod_data_source_block           2a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_cell_volume        3315.6(11)
_cod_database_code               4025370