# Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry.
# This journal is © The Royal Society of Chemistry 2019

####################################################################### 
# 
# 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_sf20180411-2
_database_code_depnum_ccdc_archive 'CCDC 1898243'
loop_
_audit_author_name
_audit_author_address
'Feng Shi'
;Jiangsu Normal University
China
;
_audit_update_record             
;
2019-02-20 deposited with the CCDC.	2019-03-22 downloaded from the CCDC.
;
_audit_creation_date             2018-04-16
_audit_creation_method           
;
Olex2 1.2
(compiled 2018.04.03 svn.r3497 for OlexSys, GUI svn.r5486)
;
_shelx_SHELXL_version_number     2017/1
_chemical_name_common            ?
_chemical_name_systematic        ?
_chemical_formula_moiety         'C21 H18 N2 O5'
_chemical_formula_sum            'C21 H18 N2 O5'
_chemical_formula_weight         378.37
_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 0.0033 0.0016 '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 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 '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           14
_space_group_name_H-M_alt        'P 1 21/c 1'
_space_group_name_Hall           '-P 2ybc'
loop_
_space_group_symop_operation_xyz
'x, y, z'
'-x, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y-1/2, z-1/2'

_cell_length_a                   15.7507(18)
_cell_length_b                   9.3997(11)
_cell_length_c                   12.8142(15)
_cell_angle_alpha                90
_cell_angle_beta                 93.560(2)
_cell_angle_gamma                90
_cell_volume                     1893.5(4)
_cell_formula_units_Z            4
_cell_measurement_reflns_used    2462
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      24.16
_cell_measurement_theta_min      2.52
_shelx_estimated_absorpt_T_max   0.981
_shelx_estimated_absorpt_T_min   0.954
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6661
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   
'SADABS-2008/1 (Bruker,2008) was used for absorption correction. wR2(int) was 0.0515 before and 0.0405 after correction. The Ratio of minimum to maximum transmission is 0.8933. The λ/2 correction factor is 0.0015.'
_exptl_absorpt_special_details   ?
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.327
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_description       block
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_exptl_transmission_factor_max   ?
_exptl_transmission_factor_min   ?
_diffrn_reflns_av_R_equivalents  0.0255
_diffrn_reflns_av_unetI/netI     0.0369
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.950
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            11052
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.950
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.074
_diffrn_reflns_theta_min         2.525
_diffrn_ambient_temperature      296.15
_diffrn_detector_area_resol_mean ?
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.950
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'φ and ω scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_source                   ?
_diffrn_standards_number         0
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                2573
_reflns_number_total             4370
_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       'SAINT v7.68A (Bruker, 2009)'
_computing_data_collection       ?
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_refine_diff_density_max         0.827
_refine_diff_density_min         -0.469
_refine_diff_density_rms         0.060
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         4370
_refine_ls_number_restraints     19
_refine_ls_R_factor_all          0.1139
_refine_ls_R_factor_gt           0.0715
_refine_ls_restrained_S_all      1.074
_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)+(0.1417P)²+0.3207P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2062
_refine_ls_wR_factor_ref         0.2455
_refine_special_details          ?
_olex2_refinement_description    
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Restrained distances
 C21-C20
 1.53 with sigma of 0.005
3. Uiso/Uaniso restraints and constraints
O3 \\sim C20 \\sim C21: within 2A with sigma of 0.01 and sigma for terminal
atoms of 0.02
Uanis(C21) \\sim Ueq: with sigma of 0.005 and sigma for terminal atoms of 0.01
4.a Ternary CH refined with riding coordinates:
 C1(H1)
4.b Secondary CH2 refined with riding coordinates:
 C4(H4A,H4B), C20(H20A,H20B)
4.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C7(H7), C8(H8), C9(H9), C10(H10), C14(H14), C15(H15), C16(H16),
 C17(H17), C18(H18)
4.d Idealised Me refined as rotating group:
 C21(H21A,H21B,H21C)
;
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_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 0.74130(19) 0.2671(3) 0.36955(16) 0.0954(9) Uani 1 1 d . . . . .
O2 O 0.57505(14) 0.3150(3) 0.5895(2) 0.0975(9) Uani 1 1 d . . . . .
O3 O 0.54414(14) 0.5159(3) 0.6702(2) 0.1000(9) Uani 1 1 d . U . . .
O4 O 0.91677(14) 0.2336(3) 0.69978(19) 0.0799(7) Uani 1 1 d . . . . .
O5 O 0.95508(17) 0.4008(3) 0.8042(2) 0.1088(10) Uani 1 1 d . . . . .
N1 N 0.76996(12) 0.3500(2) 0.53130(15) 0.0460(5) Uani 1 1 d . . . . .
N2 N 0.90715(15) 0.3495(3) 0.7372(2) 0.0649(7) Uani 1 1 d . . . . .
C1 C 0.75854(15) 0.3550(3) 0.64545(17) 0.0449(6) Uani 1 1 d . . . . .
H1 H 0.756404 0.259874 0.676534 0.054 Uiso 1 1 calc R . . . .
C2 C 0.68540(15) 0.4475(3) 0.67420(18) 0.0494(6) Uani 1 1 d . . . . .
C3 C 0.71069(18) 0.5488(3) 0.7422(2) 0.0564(7) Uani 1 1 d . . . . .
H3 H 0.673928 0.615812 0.767967 0.068 Uiso 1 1 calc R . . . .
C4 C 0.80266(19) 0.5442(3) 0.7727(2) 0.0627(7) Uani 1 1 d . . . . .
H4A H 0.813231 0.506684 0.842857 0.075 Uiso 1 1 calc R . . . .
H4B H 0.828345 0.637644 0.768725 0.075 Uiso 1 1 calc R . . . .
C5 C 0.83570(15) 0.4430(3) 0.69054(19) 0.0503(6) Uani 1 1 d . . . . .
C6 C 0.86657(15) 0.5160(3) 0.5962(2) 0.0493(6) Uani 1 1 d . . . . .
C7 C 0.92669(16) 0.6223(3) 0.5914(2) 0.0613(7) Uani 1 1 d . . . . .
H7 H 0.954460 0.657715 0.652130 0.074 Uiso 1 1 calc R . . . .
C8 C 0.94476(18) 0.6751(3) 0.4946(3) 0.0708(9) Uani 1 1 d . . . . .
H8 H 0.985199 0.746492 0.489671 0.085 Uiso 1 1 calc R . . . .
C9 C 0.90301(18) 0.6222(3) 0.4057(3) 0.0652(8) Uani 1 1 d . . . . .
H9 H 0.915489 0.659868 0.341368 0.078 Uiso 1 1 calc R . . . .
C10 C 0.84309(17) 0.5148(3) 0.4083(2) 0.0572(7) Uani 1 1 d . . . . .
H10 H 0.815776 0.479799 0.347172 0.069 Uiso 1 1 calc R . . . .
C11 C 0.82526(14) 0.4614(3) 0.50563(19) 0.0463(6) Uani 1 1 d . . . . .
C12 C 0.74038(18) 0.2481(3) 0.4629(2) 0.0556(7) Uani 1 1 d . . . . .
C13 C 0.71042(18) 0.1079(3) 0.5025(2) 0.0550(7) Uani 1 1 d . . . . .
C14 C 0.7655(2) 0.0204(3) 0.5619(2) 0.0682(8) Uani 1 1 d . . . . .
H14 H 0.817713 0.054717 0.588835 0.082 Uiso 1 1 calc R . . . .
C15 C 0.7417(3) -0.1188(4) 0.5804(3) 0.0884(11) Uani 1 1 d . . . . .
H15 H 0.778608 -0.178745 0.619057 0.106 Uiso 1 1 calc R . . . .
C16 C 0.6639(3) -0.1690(4) 0.5423(3) 0.0908(11) Uani 1 1 d . . . . .
H16 H 0.648416 -0.262326 0.555817 0.109 Uiso 1 1 calc R . . . .
C17 C 0.6100(2) -0.0839(4) 0.4854(3) 0.0813(10) Uani 1 1 d . . . . .
H17 H 0.557319 -0.118478 0.460467 0.098 Uiso 1 1 calc R . . . .
C18 C 0.6326(2) 0.0540(3) 0.4642(2) 0.0655(8) Uani 1 1 d . . . . .
H18 H 0.595458 0.111465 0.423821 0.079 Uiso 1 1 calc R . . . .
C19 C 0.59693(17) 0.4163(3) 0.6395(2) 0.0614(7) Uani 1 1 d . . . . .
C20 C 0.4539(2) 0.4995(6) 0.6401(4) 0.1238(16) Uani 1 1 d D U . . .
H20A H 0.446132 0.430765 0.583786 0.149 Uiso 1 1 calc R . . . .
H20B H 0.430035 0.589632 0.615922 0.149 Uiso 1 1 calc R . . . .
C21 C 0.4113(3) 0.4504(9) 0.7316(5) 0.185(3) Uani 1 1 d D U . . .
H21A H 0.443741 0.374738 0.764935 0.278 Uiso 1 1 calc GR . . . .
H21B H 0.355476 0.416441 0.710179 0.278 Uiso 1 1 calc GR . . . .
H21C H 0.406861 0.527801 0.779828 0.278 Uiso 1 1 calc GR . . . .


_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 C12 1.211(3) . ?
O2 C19 1.187(4) . ?
O3 C19 1.328(4) . ?
O3 C20 1.458(4) . ?
O4 N2 1.204(3) . ?
O5 N2 1.208(3) . ?
N1 C1 1.486(3) . ?
N1 C11 1.414(3) . ?
N1 C12 1.361(3) . ?
N2 C5 1.521(3) . ?
C1 H1 0.9800 . ?
C1 C2 1.508(3) . ?
C1 C5 1.552(3) . ?
C2 C3 1.335(4) . ?
C2 C19 1.466(4) . ?
C3 H3 0.9300 . ?
C3 C4 1.477(4) . ?
C4 H4A 0.9700 . ?
C4 H4B 0.9700 . ?
C4 C5 1.534(4) . ?
C5 C6 1.497(3) . ?
C6 C7 1.381(4) . ?
C6 C11 1.393(4) . ?
C7 H7 0.9300 . ?
C7 C8 1.382(4) . ?
C8 H8 0.9300 . ?
C8 C9 1.373(5) . ?
C9 H9 0.9300 . ?
C9 C10 1.383(4) . ?
C10 H10 0.9300 . ?
C10 C11 1.390(3) . ?
C12 C13 1.499(4) . ?
C13 C14 1.388(4) . ?
C13 C18 1.387(4) . ?
C14 H14 0.9300 . ?
C14 C15 1.386(5) . ?
C15 H15 0.9300 . ?
C15 C16 1.373(5) . ?
C16 H16 0.9300 . ?
C16 C17 1.347(5) . ?
C17 H17 0.9300 . ?
C17 C18 1.375(4) . ?
C18 H18 0.9300 . ?
C20 H20A 0.9700 . ?
C20 H20B 0.9700 . ?
C20 C21 1.461(4) . ?
C21 H21A 0.9600 . ?
C21 H21B 0.9600 . ?
C21 H21C 0.9600 . ?

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
C19 O3 C20 117.7(3) . . ?
C11 N1 C1 108.66(18) . . ?
C12 N1 C1 126.8(2) . . ?
C12 N1 C11 124.3(2) . . ?
O4 N2 O5 123.8(3) . . ?
O4 N2 C5 118.3(2) . . ?
O5 N2 C5 117.6(3) . . ?
N1 C1 H1 112.4 . . ?
N1 C1 C2 113.57(19) . . ?
N1 C1 C5 104.09(18) . . ?
C2 C1 H1 112.4 . . ?
C2 C1 C5 101.2(2) . . ?
C5 C1 H1 112.4 . . ?
C3 C2 C1 111.7(2) . . ?
C3 C2 C19 125.5(2) . . ?
C19 C2 C1 122.5(2) . . ?
C2 C3 H3 123.2 . . ?
C2 C3 C4 113.6(2) . . ?
C4 C3 H3 123.2 . . ?
C3 C4 H4A 111.4 . . ?
C3 C4 H4B 111.4 . . ?
C3 C4 C5 101.9(2) . . ?
H4A C4 H4B 109.3 . . ?
C5 C4 H4A 111.4 . . ?
C5 C4 H4B 111.4 . . ?
N2 C5 C1 112.4(2) . . ?
N2 C5 C4 111.3(2) . . ?
C4 C5 C1 107.2(2) . . ?
C6 C5 N2 108.2(2) . . ?
C6 C5 C1 103.29(19) . . ?
C6 C5 C4 114.3(2) . . ?
C7 C6 C5 128.7(2) . . ?
C7 C6 C11 121.1(2) . . ?
C11 C6 C5 110.2(2) . . ?
C6 C7 H7 120.7 . . ?
C6 C7 C8 118.7(3) . . ?
C8 C7 H7 120.7 . . ?
C7 C8 H8 120.0 . . ?
C9 C8 C7 120.0(3) . . ?
C9 C8 H8 120.0 . . ?
C8 C9 H9 118.7 . . ?
C8 C9 C10 122.5(3) . . ?
C10 C9 H9 118.7 . . ?
C9 C10 H10 121.3 . . ?
C9 C10 C11 117.5(3) . . ?
C11 C10 H10 121.3 . . ?
C6 C11 N1 110.0(2) . . ?
C10 C11 N1 129.7(2) . . ?
C10 C11 C6 120.3(2) . . ?
O1 C12 N1 120.5(2) . . ?
O1 C12 C13 119.2(2) . . ?
N1 C12 C13 120.3(2) . . ?
C14 C13 C12 120.5(3) . . ?
C18 C13 C12 119.4(3) . . ?
C18 C13 C14 119.1(3) . . ?
C13 C14 H14 120.4 . . ?
C15 C14 C13 119.1(3) . . ?
C15 C14 H14 120.4 . . ?
C14 C15 H15 119.7 . . ?
C16 C15 C14 120.5(3) . . ?
C16 C15 H15 119.7 . . ?
C15 C16 H16 119.8 . . ?
C17 C16 C15 120.4(3) . . ?
C17 C16 H16 119.8 . . ?
C16 C17 H17 119.9 . . ?
C16 C17 C18 120.3(4) . . ?
C18 C17 H17 119.9 . . ?
C13 C18 H18 119.7 . . ?
C17 C18 C13 120.5(3) . . ?
C17 C18 H18 119.7 . . ?
O2 C19 O3 124.0(3) . . ?
O2 C19 C2 124.3(3) . . ?
O3 C19 C2 111.7(3) . . ?
O3 C20 H20A 110.1 . . ?
O3 C20 H20B 110.1 . . ?
O3 C20 C21 108.0(4) . . ?
H20A C20 H20B 108.4 . . ?
C21 C20 H20A 110.1 . . ?
C21 C20 H20B 110.1 . . ?
C20 C21 H21A 109.5 . . ?
C20 C21 H21B 109.5 . . ?
C20 C21 H21C 109.5 . . ?
H21A C21 H21B 109.5 . . ?
H21A C21 H21C 109.5 . . ?
H21B C21 H21C 109.5 . . ?

_olex2_submission_special_instructions 'No special instructions were received'
