(1<i>R</i>*,5<i>R</i>*,6<i>S</i>*,7<i>R</i>*)-6,7-Dihydroxy-6-hydroxymethyl-2-oxabicyclo[3.2.0]heptan-3-one
Blann, Kevin; Williams, D. Bradley G.; Roodt, Andreas; Muller, Alfred; Acta Crystallographica Section E 59 (2003) o1551–o1553; doi:10.1107/S1600536803017975

data_2202569
_publ_section_title
(1<i>R</i>*,5<i>R</i>*,6<i>S</i>*,7<i>R</i>*)-6,7-Dihydroxy-6-hydroxymethyl-2-oxabicyclo[3.2.0]heptan-3-one
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1551
_journal_page_last               o1553
_journal_paper_doi               10.1107/S1600536803017975
_journal_volume                  59
_journal_year                    2003
_chemical_formula_moiety         'C7 H10 O5'
_chemical_formula_sum            'C7 H10 O5'
_chemical_formula_weight         174.15
_space_group_IT_number           144
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'P 31'
_symmetry_space_group_name_H-M   'P 31'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            3
_cell_length_a                   11.532(5)
_cell_length_b                   11.532(5)
_cell_length_c                   5.328(5)
_cell_measurement_reflns_used    293
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      21
_cell_measurement_theta_min      4
_cell_volume                     613.6(7)
_computing_cell_refinement       'SAINT-Plus (Bruker, 1999)'
_computing_data_collection       'SMART-NT (Bruker, 1998)'
_computing_data_reduction        'SAINT-Plus and XPREP (Bruker, 1999)'
_computing_molecular_graphics    ' DIAMOND (Brandenburg & Berndt, 2001)'
_computing_publication_material  ' WinGX (Farrugia,1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    ' SIR97 (Altomare et al, 1999)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART 1K CCD diffractometer'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0707
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -5
_diffrn_reflns_number            4357
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         2.04
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.122
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            ' colorless'
_exptl_crystal_density_diffrn    1.414
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       ' cuboid'
_exptl_crystal_F_000             276
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.123
_refine_diff_density_min         -0.175
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.897
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     121
_refine_ls_number_reflns         1009
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.897
_refine_ls_R_factor_all          0.0883
_refine_ls_R_factor_gt           0.0347
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0270P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0569
_refine_ls_wR_factor_ref         0.0671
_reflns_number_gt                586
_reflns_number_total             1009
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cv6218.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal' 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_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal'
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_database_code               2202569
_cod_database_fobs_code          2202569