An unusual methylene aziridine refined inP21/cand the nonstandard settingP21/n
Feast, George C.; Haestier, James; Page, Lee W.; Robertson, Jeremy; Thompson, Amber L.; Watkin, David J.; Acta Crystallographica Section C Crystal Structure Communications 65 (2009) o635–8; doi:10.1107/S0108270109046952

data_2019328
_publ_section_title
;
 An unusual methylene aziridine refined inP21/cand the nonstandard
 settingP21/n
;
_journal_coeditor_code           BM3085
_journal_issue                   12
_journal_name_full
'Acta Crystallographica Section C Crystal Structure Communications'
_journal_page_first              o635
_journal_page_last               8
_journal_paper_doi               10.1107/S0108270109046952
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C9 H15 N1 O3 S'
_chemical_formula_moiety         'C9 H15 N1 O3 S'
_chemical_formula_sum            'C9 H15 N O3 S'
_chemical_formula_weight         217.29
_chemical_melting_point          331
_chemical_name_systematic
;
6-<i>tert</i>-butyl-3-oxa-2-thia-1-azabicyclo[5.1.0]oct-6-ene 2,2-dioxide
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_method           CRYSTALS_ver_12.86
_cell_angle_alpha                90
_cell_angle_beta                 92.0014(7)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   13.8593(3)
_cell_length_b                   10.5242(2)
_cell_length_c                   14.8044(4)
_cell_measurement_reflns_used    4693
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     2158.02(9)
_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    'CAMERON (Watkin <i>et al.</i>,  1996)'
_computing_publication_material  'CRYSTALS (Betteridge <i>et al.</i>,  2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge <i>et al.</i>,  2003)'
_computing_structure_solution    'SIR92 (Altomare <i>et al.</i>,  1994)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.041
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19529
_diffrn_reflns_theta_full        27.489
_diffrn_reflns_theta_max         27.489
_diffrn_reflns_theta_min         5.354
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.282
_exptl_absorpt_correction_T_max  0.96
_exptl_absorpt_correction_T_min  0.81
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(DENZO/SCALEPACK; Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.338
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.43
_refine_diff_density_min         -0.44
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9387
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         4913
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0610
_refine_ls_R_factor_gt           0.0428
_refine_ls_shift/su_max          0.000257
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982)
 [weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)]
 where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax
 Method = Robust Weighting (Prince, 1982)
 W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^
 A~i~ are:
 27.2 43.7 25.5 10.4 2.31
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1232
_refine_ls_wR_factor_gt          0.0998
_refine_ls_wR_factor_ref         0.1232
_reflns_number_gt                3768
_reflns_number_total             4913
_reflns_threshold_expression     I>2.0\s(I)
_cod_data_source_file            bm3085sup1.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_original_formula_sum        'C9 H15 N1 O3 S'
_cod_database_code               2019328