# Electronic Supplementary Material (ESI) for Organic Chemistry Frontiers.
# This journal is © the Partner Organisations 2023

####################################################################### 
# 
# This file contains crystal structure data downloaded from the 
# Cambridge Structural Database (CSD) hosted by the Cambridge 
# Crystallographic Data Centre (CCDC).
# 
# Full information about CCDC data access policies and citation 
# guidelines are available at http://www.ccdc.cam.ac.uk/access/V1 
# 
# Audit and citation data items may have been added by the CCDC. 
# Please retain this information to preserve the provenance of 
# this file and to allow appropriate attribution of the data. 
# 
#######################################################################

data_p41
_database_code_depnum_ccdc_archive 'CCDC 2208678'
loop_
_audit_author_name
_audit_author_address
'Ming Lang'
;Wuyi University
China
;
_audit_update_record             
;
2022-09-22 deposited with the CCDC.	2023-01-05 downloaded from the CCDC.
;
_audit_creation_date             2022-04-23
_audit_creation_method           
;
Olex2 1.5-beta
(compiled 2021.12.09 svn.r5202d8cf for OlexSys, GUI svn.r6439)
;
_shelx_SHELXL_version_number     2017/1
_chemical_name_common            ?
_chemical_name_systematic        ?
_chemical_formula_moiety         'C18 H14 N2 O2'
_chemical_formula_sum            'C18 H14 N2 O2'
_chemical_formula_weight         290.31
_chemical_absolute_configuration unk
_chemical_melting_point          ?
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0181 0.0091 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0311 0.0180 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0492 0.0322 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_shelx_space_group_comment       
;
The symmetry employed for this shelxl refinement is uniquely defined
by the following loop, which should always be used as a source of
symmetry information in preference to the above space-group names.
They are only intended as comments.
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           5
_space_group_name_H-M_alt        'I 1 2 1'
_space_group_name_Hall           'I 2y'
loop_
_space_group_symop_operation_xyz
'x, y, z'
'-x, y, -z'
'x+1/2, y+1/2, z+1/2'
'-x+1/2, y+1/2, -z+1/2'

_cell_length_a                   8.5336(3)
_cell_length_b                   6.6348(2)
_cell_length_c                   25.9444(9)
_cell_angle_alpha                90
_cell_angle_beta                 97.641(3)
_cell_angle_gamma                90
_cell_volume                     1455.89(8)
_cell_formula_units_Z            4
_cell_measurement_reflns_used    2737
_cell_measurement_temperature    149.99(10)
_cell_measurement_theta_max      71.0930
_cell_measurement_theta_min      3.4150
_shelx_estimated_absorpt_T_max   ?
_shelx_estimated_absorpt_T_min   ?
_exptl_absorpt_coefficient_mu    0.709
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.73597
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   
;
CrysAlisPro 1.171.39.33c (Rigaku Oxford Diffraction, 2017)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_absorpt_special_details   ?
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_density_diffrn    1.324
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_description       block
_exptl_crystal_F_000             608
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.08
_exptl_transmission_factor_max   ?
_exptl_transmission_factor_min   ?
_diffrn_reflns_av_R_equivalents  0.0171
_diffrn_reflns_av_unetI/netI     0.0226
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.965
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            3176
_diffrn_reflns_point_group_measured_fraction_full 0.660
_diffrn_reflns_point_group_measured_fraction_max 0.635
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         71.347
_diffrn_reflns_theta_min         3.438
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      149.99(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean ?
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.965
_diffrn_measurement_details      
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  tₑₓₚ   ω     θ     κ     φ   Frames
#--------------------------------------------------------------------------
  1  ω      0.00  62.00   0.50    0.50    --   42.30 -82.00 -30.00  124
  2  ω     83.00 125.00   0.50    0.50    --   42.30  77.00-120.00   84
  3  ω    -45.00  34.00   0.50    0.50    --   42.30 -77.00 150.00  158
  4  ω     83.00 115.00   0.50    0.50    --   42.30  77.00-180.00   64
  5  ω     83.00 108.00   0.50    0.50    --   42.30  77.00-150.00   50
  6  ω     39.00  77.00   0.50    0.50    --   42.30 -77.00 150.00   76
  7  ω     12.00 135.00   0.50    0.54    --  101.60 -38.00 -90.00  246
  8  ω    101.00 158.00   0.50    0.54    --  101.60  12.00 -90.00  114
  9  ω     81.00 110.00   0.50    0.54    --  101.60 -50.00 -60.00   58
 10  ω     19.00  56.00   0.50    0.54    --  101.60  12.00 -90.00   74
 11  ω     13.00 127.00   0.50    0.54    --  101.60 -63.00 120.00  228
 12  ω     40.00 140.00   0.50    0.54    --  101.60 -77.00 120.00  200
 13  ω     87.00 158.00   0.50    0.54    --  101.60  82.00-120.00  142
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB AFC12 (RINC): Kappa single'
_diffrn_measurement_method       'ω scans'
_diffrn_orient_matrix_type       
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0051255000
_diffrn_orient_matrix_UB_12      0.0561410000
_diffrn_orient_matrix_UB_13      -0.0578771000
_diffrn_orient_matrix_UB_21      0.1809816000
_diffrn_orient_matrix_UB_22      -0.0238440000
_diffrn_orient_matrix_UB_23      0.0047220000
_diffrn_orient_matrix_UB_31      -0.0205583000
_diffrn_orient_matrix_UB_32      -0.2237843000
_diffrn_orient_matrix_UB_33      -0.0149377000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_source                   'Rotating-anode X-ray tube'
_diffrn_source_type              'Rigaku (Cu) X-ray Source'
_reflns_Friedel_coverage         0.207
_reflns_Friedel_fraction_full    0.253
_reflns_Friedel_fraction_max     0.240
_reflns_number_gt                1755
_reflns_number_total             1806
_reflns_special_details          
;
 Reflections were merged by SHELXL according to the crystal
 class for the calculation of statistics and refinement.
 
 _reflns_Friedel_fraction is defined as the number of unique
 Friedel pairs measured divided by the number that would be
 possible theoretically, ignoring centric projections and
 systematic absences.
;
_reflns_threshold_expression     'I > 2σ(I)'
_computing_cell_refinement       'CrysAlisPro 1.171.39.33c (Rigaku OD, 2017)'
_computing_data_collection       'CrysAlisPro 1.171.39.33c (Rigaku OD, 2017)'
_computing_data_reduction        'CrysAlisPro 1.171.39.33c (Rigaku OD, 2017)'
_computing_molecular_graphics    'Olex2 1.5-beta (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5-beta (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2017/1 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXS  (Sheldrick, 2008)'
_refine_diff_density_max         0.189
_refine_diff_density_min         -0.176
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details 
;
 Flack x determined using 303 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.1(2)
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         1806
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0335
_refine_ls_R_factor_gt           0.0328
_refine_ls_restrained_S_all      1.051
_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/[σ²(Fo²)+(0.0622P)²+0.2498P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0865
_refine_ls_wR_factor_ref         0.0876
_refine_special_details          ?
_olex2_refinement_description    
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Ternary CH refined with riding coordinates:
 C12(H12)
2.b Secondary CH2 refined with riding coordinates:
 C11(H11A,H11B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2A), C3(H3), C4(H4), C5(H5), C6(H6), C14(H14), C15(H15), C16(H16),
 C17(H17), C18(H18)
;
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   ?
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_site_symmetry_order
_atom_site_calc_flag
_atom_site_refinement_flags_posn
_atom_site_refinement_flags_adp
_atom_site_refinement_flags_occupancy
_atom_site_disorder_assembly
_atom_site_disorder_group
O1 O 0.43334(16) 0.4084(2) 0.39024(5) 0.0310(3) Uani 1 1 d . . . . .
O2 O 0.27097(17) -0.0089(3) 0.25293(5) 0.0353(3) Uani 1 1 d . . . . .
N1 N 0.54011(19) 0.3912(3) 0.43740(6) 0.0310(4) Uani 1 1 d . . . . .
N2 N 0.33753(18) 0.2001(3) 0.31989(6) 0.0292(4) Uani 1 1 d . . . . .
H2 H 0.302(3) 0.296(5) 0.3002(11) 0.051(8) Uiso 1 1 d . . . . .
C1 C 0.7014(2) 0.1351(4) 0.48445(7) 0.0306(5) Uani 1 1 d . . . . .
C2 C 0.7194(3) -0.0654(4) 0.49786(9) 0.0486(6) Uani 1 1 d . . . . .
H2A H 0.659940 -0.162968 0.478327 0.058 Uiso 1 1 calc R U . . .
C3 C 0.8265(3) -0.1220(5) 0.54065(10) 0.0613(8) Uani 1 1 d . . . . .
H3 H 0.838519 -0.257654 0.549293 0.074 Uiso 1 1 calc R U . . .
C4 C 0.9142(3) 0.0190(6) 0.57012(8) 0.0495(7) Uani 1 1 d . . . . .
H4 H 0.986220 -0.020277 0.598427 0.059 Uiso 1 1 calc R U . . .
C5 C 0.8950(3) 0.2190(6) 0.55752(9) 0.0522(7) Uani 1 1 d . . . . .
H5 H 0.953329 0.315828 0.577706 0.063 Uiso 1 1 calc R U . . .
C6 C 0.7895(3) 0.2781(4) 0.51500(8) 0.0461(6) Uani 1 1 d . . . . .
H6 H 0.777391 0.414124 0.506823 0.055 Uiso 1 1 calc R U . . .
C7 C 0.5878(2) 0.2020(3) 0.43952(7) 0.0270(4) Uani 1 1 d . . . . .
C8 C 0.5184(2) 0.0879(3) 0.39544(7) 0.0255(4) Uani 1 1 d . . . . .
C9 C 0.4272(2) 0.2269(3) 0.36784(7) 0.0269(4) Uani 1 1 d . . . . .
C10 C 0.3283(2) 0.0122(3) 0.29842(7) 0.0277(4) Uani 1 1 d . . . . .
C11 C 0.3841(2) -0.1605(3) 0.33423(7) 0.0280(4) Uani 1 1 d . . . . .
H11A H 0.405514 -0.275162 0.313029 0.034 Uiso 1 1 calc R U . . .
H11B H 0.298507 -0.198399 0.353395 0.034 Uiso 1 1 calc R U . . .
C12 C 0.5340(2) -0.1194(3) 0.37402(7) 0.0263(4) Uani 1 1 d . . . . .
H12 H 0.535936 -0.216389 0.402584 0.032 Uiso 1 1 calc R U . . .
C13 C 0.6842(2) -0.1475(4) 0.34846(7) 0.0288(4) Uani 1 1 d . . . . .
C14 C 0.7371(2) 0.0002(4) 0.31740(7) 0.0361(5) Uani 1 1 d . . . . .
H14 H 0.684582 0.123213 0.313584 0.043 Uiso 1 1 calc R U . . .
C15 C 0.8685(2) -0.0331(5) 0.29168(8) 0.0431(6) Uani 1 1 d . . . . .
H15 H 0.903340 0.067277 0.270891 0.052 Uiso 1 1 calc R U . . .
C16 C 0.9466(2) -0.2158(4) 0.29728(8) 0.0429(6) Uani 1 1 d . . . . .
H16 H 1.033836 -0.238793 0.280082 0.051 Uiso 1 1 calc R U . . .
C17 C 0.8954(2) -0.3640(4) 0.32831(9) 0.0448(6) Uani 1 1 d . . . . .
H17 H 0.948480 -0.486673 0.332091 0.054 Uiso 1 1 calc R U . . .
C18 C 0.7642(2) -0.3306(4) 0.35407(8) 0.0367(5) Uani 1 1 d . . . . .
H18 H 0.730255 -0.430879 0.375031 0.044 Uiso 1 1 calc R U . . .


_geom_special_details            
;
 All esds (except the esd in the dihedral angle between two l.s. planes)
 are estimated using the full covariance matrix.  The cell esds are taken
 into account individually in the estimation of esds in distances, angles
 and torsion angles; correlations between esds in cell parameters are only
 used when they are defined by crystal symmetry.  An approximate (isotropic)
 treatment of cell esds is used for estimating esds involving l.s. planes.
;
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_geom_bond_publ_flag
O1 N1 1.4296(19) . ?
O1 C9 1.335(3) . ?
O2 C10 1.224(2) . ?
N1 C7 1.319(3) . ?
N2 H2 0.85(3) . ?
N2 C9 1.383(2) . ?
N2 C10 1.363(3) . ?
C1 C2 1.378(4) . ?
C1 C6 1.391(3) . ?
C1 C7 1.482(2) . ?
C2 H2A 0.9300 . ?
C2 C3 1.392(3) . ?
C3 H3 0.9300 . ?
C3 C4 1.367(4) . ?
C4 H4 0.9300 . ?
C4 C5 1.371(5) . ?
C5 H5 0.9300 . ?
C5 C6 1.385(3) . ?
C6 H6 0.9300 . ?
C7 C8 1.432(3) . ?
C8 C9 1.349(3) . ?
C8 C12 1.496(3) . ?
C10 C11 1.512(3) . ?
C11 H11A 0.9700 . ?
C11 H11B 0.9700 . ?
C11 C12 1.557(2) . ?
C12 H12 0.9800 . ?
C12 C13 1.531(2) . ?
C13 C14 1.382(3) . ?
C13 C18 1.392(3) . ?
C14 H14 0.9300 . ?
C14 C15 1.397(3) . ?
C15 H15 0.9300 . ?
C15 C16 1.382(4) . ?
C16 H16 0.9300 . ?
C16 C17 1.378(4) . ?
C17 H17 0.9300 . ?
C17 C18 1.396(3) . ?
C18 H18 0.9300 . ?

loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
_geom_angle_publ_flag
C9 O1 N1 106.53(15) . . ?
C7 N1 O1 105.62(16) . . ?
C9 N2 H2 124(2) . . ?
C10 N2 H2 116(2) . . ?
C10 N2 C9 118.71(17) . . ?
C2 C1 C6 118.7(2) . . ?
C2 C1 C7 121.8(2) . . ?
C6 C1 C7 119.4(2) . . ?
C1 C2 H2A 120.0 . . ?
C1 C2 C3 120.1(3) . . ?
C3 C2 H2A 120.0 . . ?
C2 C3 H3 119.5 . . ?
C4 C3 C2 120.9(3) . . ?
C4 C3 H3 119.5 . . ?
C3 C4 H4 120.3 . . ?
C3 C4 C5 119.3(2) . . ?
C5 C4 H4 120.3 . . ?
C4 C5 H5 119.7 . . ?
C4 C5 C6 120.5(3) . . ?
C6 C5 H5 119.7 . . ?
C1 C6 H6 119.8 . . ?
C5 C6 C1 120.4(3) . . ?
C5 C6 H6 119.8 . . ?
N1 C7 C1 118.96(18) . . ?
N1 C7 C8 112.18(17) . . ?
C8 C7 C1 128.9(2) . . ?
C7 C8 C12 137.32(18) . . ?
C9 C8 C7 102.14(18) . . ?
C9 C8 C12 120.30(17) . . ?
O1 C9 N2 119.51(18) . . ?
O1 C9 C8 113.52(16) . . ?
C8 C9 N2 126.93(19) . . ?
O2 C10 N2 119.53(19) . . ?
O2 C10 C11 123.9(2) . . ?
N2 C10 C11 116.46(16) . . ?
C10 C11 H11A 108.3 . . ?
C10 C11 H11B 108.3 . . ?
C10 C11 C12 116.01(17) . . ?
H11A C11 H11B 107.4 . . ?
C12 C11 H11A 108.3 . . ?
C12 C11 H11B 108.3 . . ?
C8 C12 C11 107.59(16) . . ?
C8 C12 H12 108.4 . . ?
C8 C12 C13 113.19(17) . . ?
C11 C12 H12 108.4 . . ?
C13 C12 C11 110.64(14) . . ?
C13 C12 H12 108.4 . . ?
C14 C13 C12 121.56(19) . . ?
C14 C13 C18 119.05(18) . . ?
C18 C13 C12 119.28(19) . . ?
C13 C14 H14 119.6 . . ?
C13 C14 C15 120.8(2) . . ?
C15 C14 H14 119.6 . . ?
C14 C15 H15 120.2 . . ?
C16 C15 C14 119.7(2) . . ?
C16 C15 H15 120.2 . . ?
C15 C16 H16 119.9 . . ?
C17 C16 C15 120.1(2) . . ?
C17 C16 H16 119.9 . . ?
C16 C17 H17 119.9 . . ?
C16 C17 C18 120.2(2) . . ?
C18 C17 H17 119.9 . . ?
C13 C18 C17 120.2(2) . . ?
C13 C18 H18 119.9 . . ?
C17 C18 H18 119.9 . . ?

loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
O1 N1 C7 C1 179.87(14) . . . . ?
O1 N1 C7 C8 0.3(2) . . . . ?
O2 C10 C11 C12 143.85(18) . . . . ?
N1 O1 C9 N2 -177.12(14) . . . . ?
N1 O1 C9 C8 0.5(2) . . . . ?
N1 C7 C8 C9 0.0(2) . . . . ?
N1 C7 C8 C12 174.1(2) . . . . ?
N2 C10 C11 C12 -39.1(2) . . . . ?
C1 C2 C3 C4 0.5(4) . . . . ?
C1 C7 C8 C9 -179.53(18) . . . . ?
C1 C7 C8 C12 -5.5(3) . . . . ?
C2 C1 C6 C5 1.1(3) . . . . ?
C2 C1 C7 N1 159.7(2) . . . . ?
C2 C1 C7 C8 -20.7(3) . . . . ?
C2 C3 C4 C5 0.6(4) . . . . ?
C3 C4 C5 C6 -0.9(4) . . . . ?
C4 C5 C6 C1 0.0(4) . . . . ?
C6 C1 C2 C3 -1.3(4) . . . . ?
C6 C1 C7 N1 -18.4(3) . . . . ?
C6 C1 C7 C8 161.18(18) . . . . ?
C7 C1 C2 C3 -179.4(2) . . . . ?
C7 C1 C6 C5 179.3(2) . . . . ?
C7 C8 C9 O1 -0.3(2) . . . . ?
C7 C8 C9 N2 177.07(17) . . . . ?
C7 C8 C12 C11 162.3(2) . . . . ?
C7 C8 C12 C13 -75.1(3) . . . . ?
C8 C12 C13 C14 -41.2(2) . . . . ?
C8 C12 C13 C18 142.66(18) . . . . ?
C9 O1 N1 C7 -0.45(18) . . . . ?
C9 N2 C10 O2 -168.51(16) . . . . ?
C9 N2 C10 C11 14.3(2) . . . . ?
C9 C8 C12 C11 -24.4(2) . . . . ?
C9 C8 C12 C13 98.1(2) . . . . ?
C10 N2 C9 O1 -177.78(16) . . . . ?
C10 N2 C9 C8 4.9(3) . . . . ?
C10 C11 C12 C8 41.9(2) . . . . ?
C10 C11 C12 C13 -82.2(2) . . . . ?
C11 C12 C13 C14 79.6(2) . . . . ?
C11 C12 C13 C18 -96.5(2) . . . . ?
C12 C8 C9 O1 -175.66(15) . . . . ?
C12 C8 C9 N2 1.8(3) . . . . ?
C12 C13 C14 C15 -175.83(18) . . . . ?
C12 C13 C18 C17 175.82(18) . . . . ?
C13 C14 C15 C16 0.1(3) . . . . ?
C14 C13 C18 C17 -0.4(3) . . . . ?
C14 C15 C16 C17 -0.3(3) . . . . ?
C15 C16 C17 C18 0.2(3) . . . . ?
C16 C17 C18 C13 0.2(3) . . . . ?
C18 C13 C14 C15 0.3(3) . . . . ?

_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details 
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.448
_oxdiff_exptl_absorpt_empirical_full_min 0.698
