Skeletal rearrangements resulting from reactions of 1,6:2,3- and 1,6:3,4-dianhydro-β-D-hexopyranoses with diethylaminosulphur trifluoride.
Karban, Jindřich; Císařová, Ivana; Strašák, Tomáš; Šťastná, Lucie Červenková; Sýkora, Jan; Organic & biomolecular chemistry 10 (2012) 394–403; doi:10.1039/c1ob06336g

data_7152121
_publ_section_title
;
 Skeletal rearrangements resulting from reactions of 1,6:2,3- and
 1,6:3,4-dianhydro-\b-D-hexopyranoses with diethylaminosulphur
 trifluoride.
;
_journal_issue                   2
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              394
_journal_page_last               403
_journal_paper_doi               10.1039/c1ob06336g
_journal_volume                  10
_journal_year                    2012
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C6 H8 O4'
_chemical_formula_sum            'C6 H8 O4'
_chemical_formula_weight         144.13
_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   geom
_atom_sites_solution_primary     direct
_audit_creation_date             11-06-27
_audit_creation_method           CRYSTALS_ver_12.82
_cell_angle_alpha                90
_cell_angle_beta                 93.064(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.1357(4)
_cell_length_b                   5.1847(3)
_cell_length_c                   9.4064(6)
_cell_measurement_reflns_used    3483
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      2
_cell_volume                     298.81(3)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT. Nonius (1997-2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SHELXS 86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.018
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            3601
_diffrn_reflns_theta_full        28.070
_diffrn_reflns_theta_max         28.070
_diffrn_reflns_theta_min         2.168
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.137
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.91
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Siemens, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.602
_exptl_crystal_description       prism
_exptl_crystal_F_000             152
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.25
_refine_diff_density_min         -0.14
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.1586
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     123
_refine_ls_number_reflns         739
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0264
_refine_ls_R_factor_gt           0.0242
_refine_ls_shift/su_max          0.000139
_refine_ls_structure_factor_coef F
_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:
0.172 0.934E-01 0.426E-01
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0313
_refine_ls_wR_factor_gt          0.0275
_refine_ls_wR_factor_ref         0.0275
_reflns_limit_h_max              8
_reflns_limit_h_min              -8
_reflns_limit_k_max              6
_reflns_limit_k_min              0
_reflns_limit_l_max              12
_reflns_limit_l_min              0
_reflns_number_gt                739
_reflns_number_total             804
_reflns_threshold_expression     I>1.96u(I)
_oxford_diffrn_Wilson_B_factor   0.00
_oxford_diffrn_Wilson_scale      0.00
_oxford_refine_ls_scale          0.8239(19)
_oxford_structure_analysis_title 'e298c_sykora_0m in P2(1)'
_cod_data_source_file            c1ob06336g.txt
_cod_data_source_block           CRYSTALS_cif8
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 1 21 1 '
_cod_database_code               7152121