Ring-opening and -expansion of 2,2'-biaziridine: access to diverse enantiopure linear and bicyclic vicinal diamines.
Bailey, Stephen J.; Wales, Steven M.; Willis, Anthony C.; Keller, Paul A.; Organic letters 16 (2014) 4344–4347; doi:10.1021/ol502164b

data_1517509
_publ_section_title
;
 Ring-opening and -expansion of 2,2'-biaziridine: access to diverse
 enantiopure linear and bicyclic vicinal diamines.
;
_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              4344
_journal_page_last               4347
_journal_paper_doi               10.1021/ol502164b
_journal_volume                  16
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_compound_source        ' from U of Wollongong'
_chemical_formula_moiety         'C24 H25 Br N2 O4 S2'
_chemical_formula_sum            'C24 H25 Br N2 O4 S2'
_chemical_formula_weight         549.51
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_audit_creation_date             13-10-25
_audit_creation_method           CRYSTALS_ver_14.40
_audit_update_record
;
2013-10-25 - Report on C24 H25 Br N2 O4 S2
             by Anthony C. Willis
             for Paul Keller

2013-10-25 - passes checkcif tests with minor warnings  
;
_cell_angle_alpha                90
_cell_angle_beta                 101.3911(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.5263(1)
_cell_length_b                   18.5552(3)
_cell_length_c                   18.2559(3)
_cell_measurement_reflns_used    49626
_cell_measurement_temperature    200
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3
_cell_volume                     2499.25(7)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics
; 
ORTEP-II (Johnson 1976) in teXsan (MSC, 1992-1997)
;
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      200
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       ' \f and \w scans with CCD '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.073
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            57955
_diffrn_reflns_theta_full        27.584
_diffrn_reflns_theta_max         27.584
_diffrn_reflns_theta_min         2.771
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.845
_exptl_absorpt_correction_T_max  0.917
_exptl_absorpt_correction_T_min  0.652
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
via Gaussian method (Coppens, 1970) implemented in maXus (2000)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.460
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             1128
_exptl_crystal_size_max          0.420
_exptl_crystal_size_mid          0.070
_exptl_crystal_size_min          0.050
_refine_diff_density_max         1.16
_refine_diff_density_min         -1.26
_refine_ls_abs_structure_details 'Flack (1983), 5578 Friedel-pairs'
_refine_ls_abs_structure_Flack   -0.015(5)
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9740
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     596
_refine_ls_number_reflns         11510
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0621
_refine_ls_R_factor_gt           0.0391
_refine_ls_shift/su_max          0.0053658
_refine_ls_shift/su_mean         0.0005387
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.03P)^2^ + 1.00P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0799
_refine_ls_wR_factor_gt          0.0723
_refine_ls_wR_factor_ref         0.0799
_reflns_limit_h_max              9
_reflns_limit_h_min              -9
_reflns_limit_k_max              24
_reflns_limit_k_min              -24
_reflns_limit_l_max              23
_reflns_limit_l_min              0
_reflns_number_gt                8751
_reflns_number_total             11510
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   3.82
_oxford_diffrn_Wilson_scale      15.27
_oxford_refine_ls_r_factor_ref   0.0621
_oxford_refine_ls_scale          0.28129(12)
_oxford_reflns_number_all        11510
_oxford_reflns_threshold_expression_ref I>-10.0\s(I)
_oxford_structure_analysis_title 'kel1307 At 8:55 on 25/10'
_cod_data_source_file            ol502164b_si_004.cif
_cod_data_source_block           kel1307
_cod_original_sg_symbol_Hall     'P 2yb '
_cod_original_sg_symbol_H-M      'P 1 21 1 '
_cod_database_code               1517509
_iucr_refine_instruction_details_constraints
;
BLOCK SCALE X'S, U'S 
CONT ENANTIO 
RIDE N   (   1,X'S) H   (   1,X'S) 
RIDE N   (   3,X'S) H   (   3,X'S) 
RIDE C   (   1,X'S) H   (  11,X'S) H   (  12,X'S) 
RIDE C   (   2,X'S) H   (  21,X'S) 
RIDE C   (   3,X'S) H   (  31,X'S) 
RIDE C   (   4,X'S) H   (  41,X'S) H   (  42,X'S) 
RIDE C   (   7,X'S) H   (  71,X'S) 
RIDE C   (   8,X'S) H   (  81,X'S) 
RIDE C   (   9,X'S) H   (  91,X'S) 
RIDE C   (  10,X'S) H   ( 101,X'S) 
RIDE C   (  12,X'S) H   ( 121,X'S) 
RIDE C   (  13,X'S) H   ( 131,X'S) 
RIDE C   (  15,X'S) H   ( 151,X'S) 
RIDE C   (  16,X'S) H   ( 161,X'S) 
RIDE C   (  17,X'S) H   ( 171,X'S) H   ( 172,X'S) H   ( 173,X'S) 
RIDE C   (  19,X'S) H   ( 191,X'S) 
RIDE C   (  20,X'S) H   ( 201,X'S) 
RIDE C   (  22,X'S) H   ( 221,X'S) 
RIDE C   (  23,X'S) H   ( 231,X'S) 
RIDE C   (  24,X'S) H   ( 241,X'S) H   ( 242,X'S) H   ( 243,X'S) 
RIDE C   (  25,X'S) H   ( 251,X'S) H   ( 252,X'S) 
RIDE C   (  26,X'S) H   ( 261,X'S) 
RIDE C   (  27,X'S) H   ( 271,X'S) 
RIDE C   (  28,X'S) H   ( 281,X'S) H   ( 282,X'S) 
RIDE C   (  31,X'S) H   ( 311,X'S) 
RIDE C   (  32,X'S) H   ( 321,X'S) 
RIDE C   (  33,X'S) H   ( 331,X'S) 
RIDE C   (  34,X'S) H   ( 341,X'S) 
RIDE C   (  36,X'S) H   ( 361,X'S) 
RIDE C   (  37,X'S) H   ( 371,X'S) 
RIDE C   (  39,X'S) H   ( 391,X'S) 
RIDE C   (  40,X'S) H   ( 401,X'S) 
RIDE C   (  41,X'S) H   ( 411,X'S) H   ( 412,X'S) H   ( 413,X'S) 
RIDE C   (  43,X'S) H   ( 431,X'S) 
RIDE C   (  44,X'S) H   ( 441,X'S) 
RIDE C   (  46,X'S) H   ( 461,X'S) 
RIDE C   (  47,X'S) H   ( 471,X'S) 
RIDE C   (  48,X'S) H   ( 481,X'S) H   ( 482,X'S) H   ( 483,X'S) 
END                                                                             
;
_iucr_refine_instruction_details_restraints
;
NO 
REM   HREST   START (DO NOT REMOVE THIS LINE) 
REM   HREST   END (DO NOT REMOVE THIS LINE) 
END                                                                             
;