Effect of peracetylation on the conformation of gamma-cyclodextrin.
Caira, Mino R; Bettinetti, Giampiero; Sorrenti, Milena; Catenacci, Laura; Cruickshank, Dyanne; Davies, Kate; Chemical communications (Cambridge, England)  (2007) 1221–1223; doi:10.1039/b616681d

data_7101804
_publ_section_title
;
 Effect of peracetylation on the conformation of gamma-cyclodextrin.
;
_journal_issue                   12
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              1221
_journal_page_last               1223
_journal_paper_doi               10.1039/b616681d
_journal_year                    2007
_chemical_formula_moiety         '(C96 H128 O64).2(C2H5OH).H2O'
_chemical_formula_sum            'C100 H142 O67'
_chemical_formula_weight         2416.14
_chemical_melting_point          503.15
_chemical_name_common
octakis(2,3,6-tri-O-acetyl)-gamma-cyclodextrin.2(ethanol).H2O
_chemical_name_systematic
;
octakis(2,3,6-tri-O-acetyl)-gamma-cyclodextrin.2(ethanol).H2O
;
_space_group_IT_number           92
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4abw 2nw'
_symmetry_space_group_name_H-M   'P 41 21 2'
_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                   25.0841(1)
_cell_length_b                   25.0841(1)
_cell_length_c                   38.2760(2)
_cell_measurement_reflns_used    22348
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      25.35
_cell_measurement_theta_min      1.00
_cell_volume                     24083.7(2)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT 2000'
_computing_data_reduction        'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'PLATON (Spek, 1990)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'Isomorphous replacement'
_diffrn_ambient_temperature      113(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Nonius Kappa CCD diffractometer'
_diffrn_measurement_method       'phi-, omega-scans of 0.7 and 1.0 deg'
_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  0.0272
_diffrn_reflns_av_sigmaI/netI    0.0246
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       45
_diffrn_reflns_limit_l_min       -45
_diffrn_reflns_number            43624
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         2.80
_exptl_absorpt_coefficient_mu    0.113
_exptl_absorpt_correction_T_max  0.9755
_exptl_absorpt_correction_T_min  0.9700
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   -
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.333
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             10224
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.22
_refine_diff_density_max         1.149
_refine_diff_density_min         -0.653
_refine_diff_density_rms         0.073
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0(10)
_refine_ls_extinction_coef       0.0011(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1473
_refine_ls_number_reflns         12011
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0806
_refine_ls_R_factor_gt           0.0699
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1337P)^2^+26.6088P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1939
_refine_ls_wR_factor_ref         0.2029
_reflns_number_gt                10396
_reflns_number_total             12011
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b616681d.txt
_cod_data_source_block           c:\cctagcd\compd1b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '230C' was changed to '503.15' - it
was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_sg_symbol_H-M      P4(1)2(1)2
_cod_database_code               7101804