Dimerization of aldosuloses and aldonolactones into branched higher carbon sugars.
Zhao, Yachen; Wang, Shengyang; Yu, Biao; Chemical communications (Cambridge, England) 56 (2020) 2020–2022; doi:10.1039/c9cc09093b

data_7125786
_publ_section_title
;
 Dimerization of aldosuloses and aldonolactones into branched higher
 carbon sugars.
;
_journal_issue                   13
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              2020
_journal_page_last               2022
_journal_paper_doi               10.1039/c9cc09093b
_journal_volume                  56
_journal_year                    2020
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C48 H60 O10 Si2'
_chemical_formula_sum            'C48 H60 O10 Si2'
_chemical_formula_weight         853.14
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_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
_audit_update_record
;
2017-10-09 deposited with the CCDC.	2020-01-14 downloaded from the CCDC.
;
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_cell_angle_gamma                90.00
_cell_formula_units_Z            4
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_cell_length_b                   14.614(3)
_cell_length_c                   31.370(6)
_cell_measurement_reflns_used    5037
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      66.26
_cell_measurement_theta_min      3.34
_cell_volume                     4729.3(16)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.950
_diffrn_measured_fraction_theta_max 0.950
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0344
_diffrn_reflns_av_sigmaI/netI    0.0420
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            21524
_diffrn_reflns_theta_full        67.00
_diffrn_reflns_theta_max         67.00
_diffrn_reflns_theta_min         2.82
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.128
_exptl_absorpt_correction_T_max  0.9458
_exptl_absorpt_correction_T_min  0.8672
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.198
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1824
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.268
_refine_diff_density_min         -0.177
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(2)
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     541
_refine_ls_number_reflns         7935
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0505
_refine_ls_R_factor_gt           0.0401
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0478P)^2^+0.4118P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0966
_refine_ls_wR_factor_ref         0.1028
_reflns_number_gt                6715
_reflns_number_total             7935
_reflns_threshold_expression     >2sigma(I)
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_cod_depositor_comments
'Adding full bibliography for 7125786--7125790.cif.'
_cod_original_cell_volume        4729.0(16)
_cod_database_code               7125786