Helical folding in heterogeneous foldamers without inter-residual backbone hydrogen-bonding
Gowri Priya; Amol Kotmale; Rupesh Gawade; Deepti Mishra; Sourav Pal; Vedavati Puranik; Pattuparambil Rajamohanan; Gangadhar J.Sanjayan; Chem.Commun. 48 (2012) 8922–; doi:10.1039/c2cc33235c

data_7108233
_publ_section_title
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 Helical folding in heterogeneous foldamers without inter-residual
 backbone hydrogen-bonding
;
_journal_name_full               Chem.Commun.
_journal_page_first              8922
_journal_paper_doi               10.1039/c2cc33235c
_journal_volume                  48
_journal_year                    2012
_chemical_formula_moiety         'C17 H24 N2 O5 S'
_chemical_formula_sum            'C17 H24 N2 O5 S'
_chemical_formula_weight         368.44
_chemical_melting_point          342.1(10)
_chemical_name_common            foldamers
_chemical_name_systematic
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?
;
_space_group_IT_number           96
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 21 2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   9.2214(4)
_cell_length_b                   9.2214(4)
_cell_length_c                   46.482(2)
_cell_measurement_reflns_used    5992
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      20.547
_cell_measurement_theta_min      2.208
_cell_volume                     3952.6(3)
_computing_cell_refinement       'BRUKER SAINT'
_computing_data_collection       'BRUKER SMART'
_computing_data_reduction        'BRUKER SAINT'
_computing_molecular_graphics    'SHELXTL, PyMOL and PLATON'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'Bruker Smart APEX'
_diffrn_measurement_device_type  'CCD Area Detector'
_diffrn_measurement_method       'Omega Scan'
_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  0.0334
_diffrn_reflns_av_sigmaI/netI    0.0140
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       56
_diffrn_reflns_limit_l_min       -56
_diffrn_reflns_number            46376
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         1.75
_exptl_absorpt_coefficient_mu    0.191
_exptl_absorpt_correction_T_max  0.9920
_exptl_absorpt_correction_T_min  0.9237
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            paleyellow
_exptl_crystal_density_diffrn    1.238
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1568
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.159
_refine_diff_density_min         -0.173
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     248
_refine_ls_number_reflns         3674
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0547
_refine_ls_R_factor_gt           0.0454
_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^)+(0.0782P)^2^+0.3348P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1193
_refine_ls_wR_factor_ref         0.1275
_reflns_number_gt                3083
_reflns_number_total             3674
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc33235c.txt
_cod_data_source_block           C17H24N2O5SCompound1a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '68-70 degree centigrade' was changed
to '342.1(10)' - it was converted from degrees Celsius(C) to
Kelvins(K), the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P4(3)2(1)2
_cod_database_code               7108233