A new route to acyclic diaminocarbenes via lithium-halogen exchange.
Snead, David R.; Ghiviriga, Ion; Abboud, Khalil A.; Hong, Sukwon; Organic letters 11 (2009) 3274–3277; doi:10.1021/ol9013156

data_1504052
_publ_section_title
;
 A new route to acyclic diaminocarbenes via lithium-halogen exchange.
;
_journal_issue                   15
_journal_name_full               'Organic letters'
_journal_page_first              3274
_journal_page_last               3277
_journal_paper_doi               10.1021/ol9013156
_journal_volume                  11
_journal_year                    2009
_chemical_formula_sum            'C17 H28 Cl Ir N2'
_chemical_formula_weight         488.06
_chemical_name_systematic
; 
 ? 
;
_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
_audit_update_record
; 
2008-10-10 # Formatted by publCIF 
;
_cell_angle_alpha                90.00
_cell_angle_beta                 91.616(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   9.8235(9)
_cell_length_b                   14.9332(14)
_cell_length_c                   23.221(2)
_cell_measurement_reflns_used    297
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.0
_cell_measurement_theta_min      2.0
_cell_volume                     3405.1(5)
_computing_cell_refinement
'Bruker SMART v5.624 & SAINT 6.36a (Bruker 1998)'
_computing_data_collection       'Bruker SMART v5.624 (Bruker 1998)'
_computing_data_reduction        'Bruker SHELXTL v6.14 (Bruker 2000)'
_computing_molecular_graphics    'Bruker SHELXTL v6.14'
_computing_publication_material  'Bruker SHELXTL v6.14'
_computing_structure_refinement  'Bruker SHELXTL v6.14'
_computing_structure_solution    'Bruker SHELXTL v6.14'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'SMART CCD area detector'
_diffrn_measurement_method       '\w 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  0.0360
_diffrn_reflns_av_sigmaI/netI    0.0394
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            21406
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.62
_diffrn_standards_decay_%        1
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    7.995
_exptl_absorpt_correction_T_max  0.3435
_exptl_absorpt_correction_T_min  0.1719
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
'based on measured indexed crystal faces, Bruker SHELXTL  v6.12 (Bruker 1998)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.904
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             1904
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.933
_refine_diff_density_min         -1.257
_refine_diff_density_rms         0.151
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.224
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     379
_refine_ls_number_reflns         7805
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.224
_refine_ls_R_factor_all          0.0370
_refine_ls_R_factor_gt           0.0323
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0161P)^2^+6.1220P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0747
_refine_ls_wR_factor_ref         0.0766
_reflns_number_gt                7041
_reflns_number_total             7805
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ol9013156_si_003.cif
_cod_data_source_block           ds17
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        3405.0(5)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               1504052