Structure–property relationships of molecular shape and orientation with compression and expansion of xylitol
Safari, Fatemeh; Katrusiak, Andrzej; Acta Crystallographica Section B 77 (2021) –; doi:10.1107/S2052520621000445

data_2108780
_publ_section_title
;
 Structure--property relationships of molecular shape and orientation with
 compression and expansion of xylitol
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S2052520621000445
_journal_volume                  77
_journal_year                    2021
_chemical_absolute_configuration rm
_chemical_formula_moiety         'C5 H12 O5'
_chemical_formula_sum            'C5 H12 O5'
_chemical_formula_weight         152.15
_chemical_name_common            xylitol
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2020-04-29
_audit_creation_method
;
Olex2 1.2
(compiled 2017.03.28 svn.r3405 for OlexSys, GUI svn.r5337)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.0696(15)
_cell_length_b                   8.65(5)
_cell_length_c                   8.309(2)
_cell_measurement_reflns_used    594
_cell_measurement_temperature    296.0(2)
_cell_measurement_theta_max      23.4650
_cell_measurement_theta_min      3.4750
_cell_volume                     580(3)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.270
_diffrn_measured_fraction_theta_max 0.245
_diffrn_measurement_device_type  'multiwire proportional'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0876
_diffrn_reflns_av_unetI/netI     0.0598
_diffrn_reflns_Laue_measured_fraction_full 0.270
_diffrn_reflns_Laue_measured_fraction_max 0.245
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       2
_diffrn_reflns_limit_k_min       -2
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            2078
_diffrn_reflns_point_group_measured_fraction_full 0.236
_diffrn_reflns_point_group_measured_fraction_max 0.211
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.886
_diffrn_reflns_theta_min         4.907
_exptl_absorpt_coefficient_mu    0.157
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.742
_exptl_crystal_description       prism
_exptl_crystal_F_000             328
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.142
_refine_diff_density_min         -0.109
_refine_diff_density_rms         0.034
_refine_ls_abs_structure_details
;
 Flack x determined using 41 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -1.3(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.164
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     93
_refine_ls_number_reflns         265
_refine_ls_number_restraints     73
_refine_ls_restrained_S_all      1.011
_refine_ls_R_factor_all          0.0965
_refine_ls_R_factor_gt           0.0520
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0739P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1061
_refine_ls_wR_factor_ref         0.1243
_reflns_Friedel_coverage         0.440
_reflns_Friedel_fraction_full    0.185
_reflns_Friedel_fraction_max     0.161
_reflns_number_gt                175
_reflns_number_total             265
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            um5047sup1.cif
_cod_data_source_block           Xylitol3_20GPa
_cod_database_code               2108780
_cod_database_fobs_code          2108780
_shelx_shelxl_version_number     2014/7
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, H4 of O4, All C(H,H) groups
 At 1.5 times of:
  H1 of O1, H3 of O3, H2 of O2, H5 of O5
2. Restrained distances
 C2-C1
 1.54 with sigma of 0.02
3. Uiso/Uaniso restraints and constraints
Uanis(O1) \\sim Ueq, Uanis(C5) \\sim Ueq: with sigma of 0.01 and sigma for
terminal atoms of 0.02
4. Rigid body (RIGU) restrains
 O4, C4, C3, C5, O3, C2, O5, O2, C1, O1
 with sigma for 1-2 distances of 0.004 and sigma for 1-3 distances of 0.004
5.a Ternary CH refined with riding coordinates:
 C3(H3A), C2(H2A), C4(H4A)
5.b Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C5(H5A,H5B)
5.c Tetrahedral OH refined with riding coordinates:
 O4(H4), O2(H2), O5(H5)
5.d Idealised tetrahedral OH refined as rotating group:
 O3(H3), O1(H1)
;
_shelx_res_checksum              20377
_shelx_hkl_checksum              63940
_olex2_submission_special_instructions 'No special instructions were received'