Diphenylalanine-Derivative Peptide Assemblies with Increased Aromaticity Exhibit Metal-like Rigidity and High Piezoelectricity.
Basavalingappa, Vasantha; Bera, Santu; Xue, Bin; O'Donnell, Joseph; Guerin, Sarah; Cazade, Pierre-Andre; Yuan, Hui; Haq, Ehtsham Ul; Silien, Christophe; Tao, Kai; Shimon, Linda J. W.; Tofail, Syed A. M.; Thompson, Damien; Kolusheva, Sofiya; Yang, Rusen; Cao, Yi; Gazit, Ehud; ACS nano  (2020) –; doi:10.1021/acsnano.0c01654

data_4517736
_publ_section_title
;
 Diphenylalanine-Derivative Peptide Assemblies with Increased Aromaticity
 Exhibit Metal-like Rigidity and High Piezoelectricity.
;
_journal_name_full               'ACS nano'
_journal_paper_doi               10.1021/acsnano.0c01654
_journal_year                    2020
_chemical_absolute_configuration rm
_chemical_formula_sum            'C35 H36 N2 O5'
_chemical_formula_weight         564.66
_space_group_crystal_system      monoclinic
_space_group_IT_number           5
_space_group_name_Hall           'C 2y'
_space_group_name_H-M_alt        'C 1 2 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2016/4
_cell_angle_alpha                90
_cell_angle_beta                 113.841(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   26.3544(16)
_cell_length_b                   5.2948(3)
_cell_length_c                   23.2800(15)
_cell_measurement_reflns_used    3814
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.04
_cell_measurement_theta_min      2.26
_cell_volume                     2971.3(3)
_computing_cell_refinement       'Bruker Apex3'
_computing_data_collection       'Bruker Apex3'
_computing_data_reduction        'Bruker Apex3'
_computing_structure_refinement  'SHELXL-2016/4 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker KappaApexII CCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0488
_diffrn_reflns_av_unetI/netI     0.0547
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            21667
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.102
_diffrn_reflns_theta_min         3.022
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6785
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D.,
 J. Appl. Cryst. 48 (2015) 3-10
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.262
_exptl_crystal_description       plate
_exptl_crystal_F_000             1200
_exptl_crystal_size_max          0.123
_exptl_crystal_size_mid          0.050
_exptl_crystal_size_min          0.005
_refine_diff_density_max         0.220
_refine_diff_density_min         -0.200
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details
;
 Flack x determined using 1950 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     394
_refine_ls_number_reflns         6541
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0603
_refine_ls_R_factor_gt           0.0411
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0433P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0844
_refine_ls_wR_factor_ref         0.0909
_reflns_Friedel_coverage         0.804
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                5234
_reflns_number_total             6541
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            nn0c01654_si_004.cif
_cod_data_source_block           eh107bocdipdip
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               4517736
_shelx_shelxl_version_number     2016/4
_shelx_estimated_absorpt_t_min   0.990
_shelx_estimated_absorpt_t_max   1.000
_shelx_res_checksum              4101
_shelx_hkl_checksum              56388