Sonication-induced instant fibrillation and fluorescent labeling of tripeptide fibers
Pramanik, Apurba; Paikar, Arpita; HALDAR, DEBASISH; RSC Adv.  (2015) –; doi:10.1039/C5RA07864D

data_7220690
_publ_section_title
;
 Sonication-induced instant fibrillation and fluorescent labeling of
 tripeptide fibers
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C5RA07864D
_journal_year                    2015
_chemical_absolute_configuration rm
_chemical_formula_moiety         'C30 H41 N3 O6'
_chemical_formula_sum            'C30 H41 N3 O6'
_chemical_formula_weight         539.66
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2014-06-20 deposited with the CCDC.
2015-06-04 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.300(3)
_cell_length_b                   16.864(5)
_cell_length_c                   19.266(5)
_cell_measurement_reflns_used    1713
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      19.47
_cell_measurement_theta_min      2.42
_cell_volume                     3021.6(15)
_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, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0992
_diffrn_reflns_av_sigmaI/netI    0.1023
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            23359
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         1.60
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.992
_exptl_absorpt_correction_T_min  0.983
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker-2008'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.186
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1160
_exptl_crystal_size_max          0.425
_exptl_crystal_size_mid          0.210
_exptl_crystal_size_min          0.195
_refine_diff_density_max         0.418
_refine_diff_density_min         -0.353
_refine_diff_density_rms         0.066
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.1(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     308
_refine_ls_number_reflns         5308
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.099
_refine_ls_R_factor_all          0.1374
_refine_ls_R_factor_gt           0.0780
_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^)+(0.0875P)^2^+1.5287P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1745
_refine_ls_wR_factor_ref         0.2047
_reflns_number_gt                3276
_reflns_number_total             5308
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ra07864d2.cif
_cod_data_source_block           app1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 
;
_cod_original_cell_volume        3021.8(14)
_cod_original_sg_symbol_H-M      'P2(1)2(1)2(1) '
_cod_database_code               7220690
_exptl_crystal_f_000'            1160.54