Unique crystallographic signatures of Boc-Gly-Phe-Phe-OMe and Boc-Gly-Phg-Phe-OMe and their self-association
Giri, Rajat Subhra; Mandal, Bhubaneswar; CrystEngComm 21 (2019) 236–; doi:10.1039/C8CE01723A

data_7231834
_publ_section_title
;
 Unique crystallographic signatures of Boc-Gly-Phe-Phe-OMe and
 Boc-Gly-Phg-Phe-OMe and their self-association
;
_journal_issue                   2
_journal_name_full               CrystEngComm
_journal_page_first              236
_journal_paper_doi               10.1039/C8CE01723A
_journal_volume                  21
_journal_year                    2019
_chemical_formula_moiety         'C26 H33 N3 O6'
_chemical_formula_sum            'C26 H33 N3 O6'
_chemical_formula_weight         483.55
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-06-25 deposited with the CCDC.
2018-11-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 114.753(18)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   15.407(2)
_cell_length_b                   5.8843(6)
_cell_length_c                   15.664(2)
_cell_measurement_reflns_used    1666
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      23.6970
_cell_measurement_theta_min      3.7240
_cell_volume                     1289.6(3)
_computing_cell_refinement       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.890
_diffrn_measurement_device_type  'SuperNova (Mo) X-ray Source'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0334
_diffrn_reflns_av_unetI/netI     0.0798
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.890
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            6575
_diffrn_reflns_point_group_measured_fraction_full 0.879
_diffrn_reflns_point_group_measured_fraction_max 0.739
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.746
_diffrn_reflns_theta_min         2.864
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.245
_exptl_crystal_description       block
_exptl_crystal_F_000             516.0
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.21
_exptl_transmission_factor_max   0.981
_exptl_transmission_factor_min   0.972
_refine_diff_density_max         0.320
_refine_diff_density_min         -0.281
_refine_diff_density_rms         0.063
_refine_ls_abs_structure_details
;
 Flack x determined using 902 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.7(10)
_refine_ls_extinction_coef       0.040(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     321
_refine_ls_number_reflns         4934
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.1038
_refine_ls_R_factor_gt           0.0721
_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^)+(0.0891P)^2^+1.0976P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1949
_refine_ls_wR_factor_ref         0.2202
_reflns_Friedel_coverage         0.517
_reflns_Friedel_fraction_full    0.733
_reflns_Friedel_fraction_max     0.556
_reflns_number_gt                3405
_reflns_number_total             4934
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ce01723a2.cif
_cod_data_source_block           RSG-Boc-Gly-Phe-Phe-OMe
_cod_depositor_comments
'Adding full bibliography for 7231834--7231835.cif.'
_cod_database_code               7231834
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              72855