The unique crystallographic signature of a β-turn mimic nucleated by N-methylated phenylalanine and Aib as corner residue: conformational and self-assembly studies
Konar, Anita Dutt; CrystEngComm 15 (2013) 10569–; doi:10.1039/c3ce41448e

data_7211370
_publ_section_title
;
 The unique crystallographic signature of a \b-turn mimic nucleated by
 N-methylated phenylalanine and Aib as corner residue: conformational and
 self-assembly studies
;
_journal_issue                   48
_journal_name_full               CrystEngComm
_journal_page_first              10569
_journal_paper_doi               10.1039/c3ce41448e
_journal_volume                  15
_journal_year                    2013
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C29 H39 N3 O6'
_chemical_formula_sum            'C29 H39 N3 O6'
_chemical_formula_weight         525.63
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_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                 102.503(17)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.923(4)
_cell_length_b                   10.889(4)
_cell_length_c                   12.814(4)
_cell_measurement_temperature    298(2)
_cell_volume                     1488.0(9)
_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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.938
_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           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0425
_diffrn_reflns_av_sigmaI/netI    0.0545
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            10958
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.83
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.988
_exptl_absorpt_correction_T_min  0.985
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   multi-scan
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.173
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.370
_refine_diff_density_min         -0.274
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     350
_refine_ls_number_reflns         5386
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0497
_refine_ls_R_factor_gt           0.0448
_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^)+(0.0806P)^2^+0.0017P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1235
_refine_ls_wR_factor_ref         0.1280
_reflns_number_gt                4850
_reflns_number_total             5386
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce41448e.txt
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:

'_space_group_crystal_system' 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 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P21
_cod_database_code               7211370