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_7152117
_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'
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_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
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_audit_creation_method           CRYSTALS_ver_12.82
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.6736(2)
_cell_length_b                   9.5781(4)
_cell_length_c                   10.7239(4)
_cell_measurement_reflns_used    4835
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      3
_cell_volume                     582.76(4)
_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 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
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_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -11
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_diffrn_reflns_theta_full        27.513
_diffrn_reflns_theta_max         27.513
_diffrn_reflns_theta_min         2.851
_diffrn_standards_number         0
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_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Siemens, 1996)'
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_exptl_crystal_description       prism
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_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.37
_refine_diff_density_max         0.23
_refine_diff_density_min         -0.17
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.1434
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         719
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0276
_refine_ls_R_factor_gt           0.0245
_refine_ls_shift/su_max          0.000242
_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:
0.182 0.138 0.532E-01
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0348
_refine_ls_wR_factor_gt          0.0291
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_reflns_limit_h_max              7
_reflns_limit_h_min              0
_reflns_limit_k_max              12
_reflns_limit_k_min              0
_reflns_limit_l_max              13
_reflns_limit_l_min              0
_reflns_number_gt                719
_reflns_number_total             805
_reflns_threshold_expression     I>1.96u(I)
_oxford_diffrn_Wilson_B_factor   0.00
_oxford_diffrn_Wilson_scale      0.00
_oxford_refine_ls_scale          0.4567(12)
_oxford_structure_analysis_title 'e999_sykora_0m in P2(1)2(1)2(1)'
_cod_data_source_file            c1ob06336g.txt
_cod_data_source_block           CRYSTALS_cif4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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 21 21 21 '
_cod_database_code               7152117