trans-β2,3-Amino Acid-Based Supramolecular Synthons for Probing the Interrelationships between Structure, Torsion-Directed Assembly, and Isomorphism
Balamurugan, D.; Ramkumar, V.; Muraleedharan, K. M.; Crystal Growth & Design 10 (2010) 2460–; doi:10.1021/cg100208m

data_4501662
_publ_section_title
;
 trans-\b2,3-Amino Acid-Based Supramolecular Synthons for Probing the
 Interrelationships between Structure, Torsion-Directed Assembly, and
 Isomorphism
;
_journal_issue                   6
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              2460
_journal_paper_doi               10.1021/cg100208m
_journal_volume                  10
_journal_year                    2010
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C28 H36 N2 O6'
_chemical_formula_sum            'C28 H36 N2 O6'
_chemical_formula_weight         496.59
_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
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.697(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.8519(5)
_cell_length_b                   13.1508(5)
_cell_length_c                   10.8086(4)
_cell_measurement_reflns_used    1860
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      24.79
_cell_measurement_theta_min      2.45
_cell_volume                     1393.45(10)
_computing_cell_refinement       'APEXII/SAINT (Bruker, 2004)'
_computing_data_collection       'APEX II,Bruker,2004'
_computing_data_reduction        'SAINT/XPREP (Bruker, 2004)'
_computing_molecular_graphics
'ORTEP3 (Farrugia, 1997) and Mercury (Bruno et al., 2002)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker Apex II 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  0.0282
_diffrn_reflns_av_sigmaI/netI    0.0419
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            6618
_diffrn_reflns_theta_full        25.34
_diffrn_reflns_theta_max         25.34
_diffrn_reflns_theta_min         3.09
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.9836
_exptl_absorpt_correction_T_min  0.9715
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (BRUKER,1999)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.184
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             532
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.128
_refine_diff_density_min         -0.111
_refine_diff_density_rms         0.026
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.8(16)
_refine_ls_extinction_coef       0.013(3)
_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   0.822
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     335
_refine_ls_number_reflns         3018
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.821
_refine_ls_R_factor_all          0.0551
_refine_ls_R_factor_gt           0.0404
_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^)+(0.1000P)^2^+0.2200P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1070
_refine_ls_wR_factor_ref         0.1235
_reflns_number_gt                2486
_reflns_number_total             3018
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg100208m_si_001.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_Hall     'P 2yb '
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               4501662