Versatile synthesis and mechanism of activation of S-benzoxazolyl glycosides.
Kamat, Medha N.; Rath, Nigam P.; Demchenko, Alexei V.; The Journal of organic chemistry 72 (2007) 6938–6946; doi:10.1021/jo0711844

data_4029619
_publ_section_title
;
 Versatile synthesis and mechanism of activation of S-benzoxazolyl
 glycosides.
;
_journal_issue                   18
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              6938
_journal_page_last               6946
_journal_paper_doi               10.1021/jo0711844
_journal_volume                  72
_journal_year                    2007
_chemical_formula_sum            'C9 H10 F3 N O5 S2'
_chemical_formula_weight         333.30
_chemical_name_systematic
;

 ?

;
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_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            8
_cell_length_a                   25.5198(8)
_cell_length_b                   5.0809(2)
_cell_length_c                   20.1359(7)
_cell_measurement_reflns_used    5496
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.68
_cell_measurement_theta_min      2.58
_cell_volume                     2610.89(16)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker-SHELXTL (Sheldrick, 2005)'
_computing_publication_material  'Bruker-SHELXTL (Sheldrick, 2005)'
_computing_structure_refinement  'Bruker-SHELXTL (Sheldrick, 2005)'
_computing_structure_solution    'Bruker-SHELXTL (Sheldrick, 2005)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and 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  0.0503
_diffrn_reflns_av_sigmaI/netI    0.0468
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       -36
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            42062
_diffrn_reflns_theta_full        30.54
_diffrn_reflns_theta_max         30.54
_diffrn_reflns_theta_min         1.60
_exptl_absorpt_coefficient_mu    0.463
_exptl_absorpt_correction_T_max  0.9296
_exptl_absorpt_correction_T_min  0.8511
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'sadabs v2.10'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.696
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rectangular rod'
_exptl_crystal_F_000             1360
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.343
_refine_diff_density_min         -0.306
_refine_diff_density_rms         0.064
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.20(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     441
_refine_ls_number_reflns         7788
_refine_ls_number_restraints     13
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.0462
_refine_ls_R_factor_gt           0.0353
_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^)+(0.0362P)^2^+0.2732P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0697
_refine_ls_wR_factor_ref         0.0749
_reflns_number_gt                6705
_reflns_number_total             7788
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo0711844-file007.cif
_cod_data_source_block           d15405
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      Pca2~1~
_cod_database_code               4029619
_cod_duplicate_entry 4024151