New crystalline forms of permethylated ?-cyclodextrin
Caira, Mino R.; Bourne, Susan A.; Mhlongo, Welcome T.; Dean, Pamela M.; Chemical Communications  (2004) 2216–2217; doi:10.1039/b408660k

data_7111404
_publ_section_title
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 New crystalline forms of permethylated ?-cyclodextrin
;
_journal_issue                   19
_journal_name_full               'Chemical Communications'
_journal_page_first              2216
_journal_page_last               2217
_journal_paper_doi               10.1039/b408660k
_journal_year                    2004
_chemical_formula_moiety         'C63 H112 O35'
_chemical_formula_sum            'C63 H112 O35'
_chemical_formula_weight         1429.53
_chemical_melting_point          'HSM 147-149C'
_chemical_name_common            heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin
_chemical_name_systematic
;
heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin
;
_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
_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            4
_cell_length_a                   15.9509(1)
_cell_length_b                   16.5772(1)
_cell_length_c                   28.9413(2)
_cell_measurement_reflns_used    37345
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.70
_cell_measurement_theta_min      3.61
_cell_volume                     7652.69(9)
_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    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Nonius Kappa CCD diffractometer'
_diffrn_measurement_method       '1.0 deg. 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  0.0562
_diffrn_reflns_av_sigmaI/netI    0.0380
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            56677
_diffrn_reflns_theta_full        25.70
_diffrn_reflns_theta_max         25.70
_diffrn_reflns_theta_min         3.61
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.241
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             3080
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.402
_refine_diff_density_min         -0.486
_refine_diff_density_rms         0.068
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.5(7)
_refine_ls_extinction_coef       none
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.107
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     899
_refine_ls_number_reflns         14499
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.107
_refine_ls_R_factor_all          0.0609
_refine_ls_R_factor_gt           0.0531
_refine_ls_shift/su_max          0.040
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0516P)^2^+6.2614P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1269
_refine_ls_wR_factor_ref         0.1304
_reflns_number_gt                13091
_reflns_number_total             14499
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b408660ksup1.cif
_cod_data_source_block           tbbuc
_cod_depositor_comments
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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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value '-' 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      P2(1)2(1)2(1)
_cod_database_code               7111404