#------------------------------------------------------------------------------ #$Date: 2011-06-14 11:12:23 +0300 (Tue, 14 Jun 2011) $ #$Revision: 20820 $ #$URL: file:///home/coder/svn-repositories/cod/cif/7/7104079.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_7104079 loop_ _publ_author_name 'Hu, Guixian' 'Zimmermann, Martin' 'Ramana, Chepuri Venkata' 'Vasella, Andrea' _publ_section_title ; Cyclopentanes from N-amino-glyconolactams. A synthesis of mannostatin A. ; _journal_issue 8 _journal_name_full 'Chemical communications (Cambridge, England)' _journal_page_first 952 _journal_page_last 953 _journal_year 2003 _chemical_formula_sum 'C28 H36 O7 Si' _chemical_formula_weight 512.66 _chemical_melting_point 435.2(8) _chemical_name_common ; 1R-(1,2,3,4/5)-1,5-di-O-benzoyl-4-O-tert-Butyldimethylsilyl- 2,3-O-isopropylidene-cyclopentane-1,2,3,4,5-pentol ; _chemical_name_systematic ; 1R-(1,2,3,4/5)-1,5-di-O-benzoyl-4-O-tert- Butyldimethylsilyl-2,3-O- isopropylidene-cyclopentane-1,2,3,4,5-pentol ; _space_group_IT_number 4 _symmetry_cell_setting monoclinic _symmetry_space_group_name_Hall 'P 2yb' _symmetry_space_group_name_H-M 'P 1 21 1' _atom_sites_solution_hydrogens geom _atom_sites_solution_primary direct _audit_creation_method SHELXL-97 _cell_angle_alpha 90.00 _cell_angle_beta 103.00(2) _cell_angle_gamma 90.00 _cell_formula_units_Z 2 _cell_length_a 6.3780(10) _cell_length_b 19.449(5) _cell_length_c 11.752(3) _cell_measurement_reflns_used 14 _cell_measurement_temperature 293(2) _cell_measurement_theta_max 23.5 _cell_measurement_theta_min 19.7 _cell_volume 1420.4(6) _computing_cell_refinement CAD4 _computing_data_collection CAD4 _computing_data_reduction MolEN _computing_molecular_graphics 'Ortep, Pluto' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_structure_solution 'SIR97 (Altomare, 1997)' _database_code_CSD 202048 _diffrn_ambient_temperature 293(2) _diffrn_measured_fraction_theta_full 0.676 _diffrn_measured_fraction_theta_max 0.676 _diffrn_measurement_device_type CAD4 _diffrn_measurement_method \o/2\p _diffrn_radiation_monochromator graphite _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_type CuK\a _diffrn_radiation_wavelength 1.54184 _diffrn_reflns_av_R_equivalents 0.027 _diffrn_reflns_av_sigmaI/netI 0.0227 _diffrn_reflns_limit_h_max 6 _diffrn_reflns_limit_h_min 0 _diffrn_reflns_limit_k_max 23 _diffrn_reflns_limit_k_min 0 _diffrn_reflns_limit_l_max 13 _diffrn_reflns_limit_l_min -14 _diffrn_reflns_number 2283 _diffrn_reflns_theta_full 68.93 _diffrn_reflns_theta_max 68.93 _diffrn_reflns_theta_min 3.86 _diffrn_standards_interval_time 10000s _diffrn_standards_number 2 _exptl_absorpt_coefficient_mu 1.076 _exptl_absorpt_correction_type none _exptl_crystal_colour colourless _exptl_crystal_density_diffrn 1.199 _exptl_crystal_density_method 'not measured' _exptl_crystal_description plate _exptl_crystal_F_000 548 _exptl_crystal_size_max 0.35 _exptl_crystal_size_mid 0.08 _exptl_crystal_size_min 0.08 _refine_diff_density_max 0.670 _refine_diff_density_min -0.375 _refine_diff_density_rms 0.047 _refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881' _refine_ls_abs_structure_Flack -0.10(7) _refine_ls_extinction_method none _refine_ls_goodness_of_fit_ref 1.285 _refine_ls_hydrogen_treatment riding _refine_ls_matrix_type full _refine_ls_number_parameters 332 _refine_ls_number_reflns 1842 _refine_ls_number_restraints 1 _refine_ls_restrained_S_all 1.214 _refine_ls_R_factor_all 0.0863 _refine_ls_R_factor_gt 0.0509 _refine_ls_shift/su_max 0.025 _refine_ls_shift/su_mean 0.006 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details ; calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3 ; _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.1418 _refine_ls_wR_factor_ref 0.1632 _reflns_number_gt 1842 _reflns_number_total 2627 _reflns_threshold_expression >3sigma(I) _[local]_cod_data_source_file b301213a.txt _[local]_cod_data_source_block v230501 _[local]_cod_cif_authors_sg_H-M P21 _cod_depositor_comments ; '_chemical_melting_point' value '434.5–436' was changed to '435.2(8)' - the average value was taken and precision was estimated. Adriana Da\