Iron(III) Chloride Modulated Selective 1,2-trans Glycosylation Based on Glycosyl Trichloroacetimidate Donors and its Application in Orthogonal Glycosylation
Mukherjee, Mana Mohan; Basu, Nabamita; Ghosh, Rina; RSC Adv.  (2016) –; doi:10.1039/C6RA21859H

data_7226948
_publ_section_title
;
 Iron(III) Chloride Modulated Selective 1,2-trans Glycosylation Based on
 Glycosyl Trichloroacetimidate Donors and its Application in Orthogonal
 Glycosylation
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C6RA21859H
_journal_year                    2016
_chemical_formula_sum            'C44 H50 O6'
_chemical_formula_weight         674.84
_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
_audit_update_record
;
2016-08-27 deposited with the CCDC.
2016-10-27 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.4392(3)
_cell_length_b                   12.6456(5)
_cell_length_c                   31.1780(10)
_cell_measurement_reflns_used    250
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.6
_cell_measurement_theta_min      1.3
_cell_volume                     3721.5(2)
_computing_cell_refinement       'SMART APEX II'
_computing_data_collection       'SMART APEX II (BRUKER,2010)'
_computing_data_reduction        'SAINT (BRUKER,2000)'
_computing_molecular_graphics    'Ortep-3v2 for windows (Farrugia,1997)'
_computing_publication_material  'PLATON (Spek, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       '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  0.0924
_diffrn_reflns_av_sigmaI/netI    0.0535
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            65116
_diffrn_reflns_theta_full        27.61
_diffrn_reflns_theta_max         27.61
_diffrn_reflns_theta_min         1.31
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.9854
_exptl_absorpt_correction_T_min  0.8546
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
'XPREP' - A PROGRAM DATA PREPARATION & RECIPROCAL 
SPACE EXPLORATION,
Bruker Analytical X-ray Systems, 1997
;
_exptl_crystal_colour            White
_exptl_crystal_density_diffrn    1.204
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1448
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Ethyl acetate and Hexane'
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.361
_refine_diff_density_min         -0.425
_refine_diff_density_rms         0.140
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.1(12)
_refine_ls_extinction_coef       0.0179(14)
_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   1.029
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     485
_refine_ls_number_reflns         8626
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.1034
_refine_ls_R_factor_gt           0.0605
_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^)+(0.0826P)^2^+0.1709P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1378
_refine_ls_wR_factor_ref         0.1635
_reflns_number_gt                5376
_reflns_number_total             8626
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c6ra21859h2.cif
_cod_data_source_block           RG1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               7226948