Designer pseudopeptides: autofluorescent polygonal tubes <i>via</i> Phe-zipper and triple helix.
Haridas, V.; Maurya, Govind P.; Dutta, Souvik; Chemical science 15 (2024) 16908–16916; doi:10.1039/d4sc04023f

data_1572617
_publ_section_title
;
 Designer pseudopeptides: autofluorescent polygonal tubes <i>via</i>
 Phe-zipper and triple helix.
;
_journal_issue                   41
_journal_name_full               'Chemical science'
_journal_page_first              16908
_journal_page_last               16916
_journal_paper_doi               10.1039/d4sc04023f
_journal_volume                  15
_journal_year                    2024
_chemical_absolute_configuration R
_chemical_formula_moiety         'C21 H25 N3 O4'
_chemical_formula_sum            'C21 H25 N3 O4'
_chemical_formula_weight         383.1845
_chemical_name_common            dMUAFO
_chemical_name_systematic        dMUAFO
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2024-03-30
_audit_creation_method
;
Olex2 1.5
(compiled 2023.08.24 svn.re1ec1418 for OlexSys, GUI svn.r6817)
;
_audit_update_record
;
2024-05-10 deposited with the CCDC.	2024-09-18 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.3547(2)
_cell_length_b                   11.2231(4)
_cell_length_c                   33.8405(11)
_cell_measurement_reflns_used    4616
_cell_measurement_temperature    302.(2)
_cell_measurement_theta_max      21.1445
_cell_measurement_theta_min      2.1775
_cell_volume                     2033.69(12)
_computing_cell_refinement       'SAINT V8.40B (Bruker AXS LLC, 2019)'
_computing_data_reduction        'SAINT V8.40B (Bruker AXS LLC, 2019)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'XT, VERSION 2018/2'
_diffrn_ambient_temperature      302.00
_diffrn_detector_area_resol_mean 7.3910
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'BRUKER APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0630
_diffrn_reflns_av_unetI/netI     0.0691
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -45
_diffrn_reflns_number            19171
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.255
_diffrn_reflns_theta_min         2.178
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  0.980
_exptl_absorpt_correction_T_min  0.975
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Krause, L., Herbst-Irmer, R., Sheldrick, G. M., Stalke, D. (2015).
"Comparison of silver and molybdenum microfocus X-ray sources for
single-crystal structure determination"
J. Appl. Cryst. 48, 3-10.
doi:10.1107/S1600576714022985
;
_exptl_crystal_density_diffrn    1.252
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       unk
_exptl_crystal_F_000             816
_refine_diff_density_max         0.165
_refine_diff_density_min         -0.178
_refine_diff_density_rms         0.038
_refine_ls_abs_structure_details
;
 Flack x determined using 879 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.7(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         5027
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.1112
_refine_ls_R_factor_gt           0.0508
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0501P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0994
_refine_ls_wR_factor_ref         0.1207
_reflns_Friedel_coverage         0.717
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                2928
_reflns_number_total             5027
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4sc04023f2.cif
_cod_data_source_block           dFAibUrea
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-Scan' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 8170 2020-07-09 18:12:32Z antanas 

 Adding full bibliography for 1572616--1572618.cif.
;
_cod_database_code               1572617
_shelx_shelxl_version_number     2019/1
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C10(H10)
2.b Secondary CH2 refined with riding coordinates:
 C15(H15A,H15B)
2.c Aromatic/amide H refined with riding coordinates:
 N1(H1), N2(H2), N3(H3), C2(H2A), C3(H3A), C4(H4), C5(H5), C6(H6), C17(H17),
 C18(H18), C19(H19), C20(H20), C21(H21)
2.d Idealised Me refined as rotating group:
 C12(H12A,H12B,H12C), C13(H13A,H13B,H13C), C14(H14A,H14B,H14C)
;
_shelx_res_checksum              59978
_shelx_hkl_checksum              2402
_olex2_submission_special_instructions 'No special instructions were received'