Crystal structure of methyl 3,4,6-tri-O-benzyl-2-deoxy-2-C-nitromethyl-β-D-galactopyranoside, C29H33NO7
Elangovan Elamparuthi; Torsten Linker; Alexandra Kelling; Uwe Schilde; Zeitschrift für Kristallographie - New Crystal Structures 224 (2009) 67–; doi:

data_8102381
_publ_section_title
;
 Crystal structure of methyl
 3,4,6-tri-O-benzyl-2-deoxy-2-C-nitromethyl-\b-D-galactopyranoside,
 C29H33NO7
;
_journal_issue                   1
_journal_name_full
'Zeitschrift f\"ur Kristallographie - New Crystal Structures'
_journal_page_first              67
_journal_volume                  224
_journal_year                    2009
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C29 H33 N O7'
_chemical_formula_sum            'C29 H33 N O7'
_chemical_formula_weight         507.56
_chemical_melting_point          400.5(5)
_chemical_name_systematic
; 
methyl 3,4,6-tri-O-benzyl-2-deoxy-
2-C-nitromethyl-\b-D-galactopyranoside 
;
_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   difmap
_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                   24.7379(14)
_cell_length_b                   10.5120(8)
_cell_length_c                   10.3749(6)
_cell_measurement_reflns_used    25631
_cell_measurement_temperature    210(2)
_cell_measurement_theta_max      24.78
_cell_measurement_theta_min      1.62
_cell_volume                     2697.9(3)
_computing_cell_refinement       'X-AREA (Stoe, 2004)'
_computing_data_collection       'X-AREA (Stoe, 2004)'
_computing_data_reduction        'X-RED (Stoe, 2004)'
_computing_molecular_graphics
;
 ORTEP-3 for Windows (Farrugia, 2005) based on ORTEP-III
 (Burnett & Johnson, 2000)
;
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      210(2)
_diffrn_detector                 'image plate (34 cm diameter)'
_diffrn_detector_area_resol_mean 6.67
_diffrn_detector_type            STOE
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_details
;
 180 frames, detector distance = 140 mm
;
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'STOE IPDS 2'
_diffrn_measurement_method       '\w scan, 1.0 \%'
_diffrn_radiation_monochromator  'plane graphite'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1093
_diffrn_reflns_av_sigmaI/netI    0.0519
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            34572
_diffrn_reflns_theta_full        24.95
_diffrn_reflns_theta_max         24.95
_diffrn_reflns_theta_min         1.65
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9796
_exptl_absorpt_correction_T_min  0.9795
_exptl_absorpt_correction_type   sphere
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.250
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1080
_exptl_crystal_size_max          0.9
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.234
_refine_diff_density_min         -0.171
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.8(10)
_refine_ls_extinction_coef       0.0169(15)
_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   0.950
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     435
_refine_ls_number_reflns         4728
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.950
_refine_ls_R_factor_all          0.0596
_refine_ls_R_factor_gt           0.0422
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0630P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0978
_refine_ls_wR_factor_ref         0.1054
_reflns_number_gt                3556
_reflns_number_total             4728
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1267-2472.cff
_cod_data_source_block           elang2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '400-401' was changed to '400.5(5)' -
the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 
;
_cod_database_code               8102381