# Electronic Supplementary Material (ESI) for ChemComm.
# This journal is © The Royal Society of Chemistry 2022

####################################################################### 
# 
# 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_1
_database_code_depnum_ccdc_archive 'CCDC 1855890'
loop_
_audit_author_name
_audit_author_address
'Xitao Zhang'
;'???'f
China
;
_audit_update_record             
;
2018-07-14 deposited with the CCDC.	2022-01-24 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2014/7
_shelx_SHELXL_version_number     2014/7
_chemical_name_systematic        ?
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C18 H18 Br Cl2 N O3'
_chemical_formula_weight         447.14

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'
Cl Cl 0.1484 0.1585 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Br Br -0.2901 2.4595 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_H-M_alt        'P 21/n'
_space_group_name_Hall           '-P 2yn'

_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.
;

loop_
_space_group_symop_operation_xyz
'x, y, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x-1/2, -y-1/2, z-1/2'

_cell_length_a                   6.2949(3)
_cell_length_b                   22.9315(13)
_cell_length_c                   13.8808(8)
_cell_angle_alpha                90
_cell_angle_beta                 97.214(4)
_cell_angle_gamma                90
_cell_volume                     1987.85(19)
_cell_formula_units_Z            4
_cell_measurement_temperature    296(2)
_cell_measurement_reflns_used    1261
_cell_measurement_theta_min      2.31
_cell_measurement_theta_max      19.91

_exptl_crystal_description       needle
_exptl_crystal_colour            colourless
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.494
_exptl_crystal_F_000             904
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          ?
_exptl_crystal_size_mid          ?
_exptl_crystal_size_min          ?
_exptl_absorpt_coefficient_mu    2.353
_shelx_estimated_absorpt_T_min   ?
_shelx_estimated_absorpt_T_max   ?
_exptl_absorpt_correction_type   ?
_exptl_absorpt_correction_T_min  ?
_exptl_absorpt_correction_T_max  ?
_exptl_absorpt_process_details   ?
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      296(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_source                   ?
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            11311
_diffrn_reflns_av_unetI/netI     0.0866
_diffrn_reflns_av_R_equivalents  0.0566
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_theta_min         2.311
_diffrn_reflns_theta_max         27.579
_diffrn_reflns_theta_full        25.242
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measured_fraction_theta_full 0.989
_diffrn_reflns_Laue_measured_fraction_max 0.978
_diffrn_reflns_Laue_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 0.978
_diffrn_reflns_point_group_measured_fraction_full 0.989
_reflns_number_total             4496
_reflns_number_gt                2380
_reflns_threshold_expression     'I > 2σ(I)'
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_max     .
_reflns_Friedel_fraction_full    .

_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.
;

_computing_data_collection       ?
_computing_cell_refinement       ?
_computing_data_reduction        ?
_computing_structure_solution    ?
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_molecular_graphics    ?
_computing_publication_material  ?
_refine_special_details          ?
_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'w=1/[σ²(Fo²)+(0.0526P)²] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary     ?
_atom_sites_solution_secondary   ?
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    constr
_refine_ls_extinction_method     none
_refine_ls_extinction_coef       .
_refine_ls_number_reflns         4496
_refine_ls_number_parameters     229
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1256
_refine_ls_R_factor_gt           0.0538
_refine_ls_wR_factor_ref         0.1320
_refine_ls_wR_factor_gt          0.1069
_refine_ls_goodness_of_fit_ref   0.981
_refine_ls_restrained_S_all      0.981
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000

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
Br1 Br 0.43116(8) 1.08733(2) 0.05701(4) 0.0772(2) Uani 1 1 d . . . . .
C1 C 0.6207(7) 1.03523(17) 0.1326(3) 0.0484(11) Uani 1 1 d . . . . .
C2 C 0.8374(7) 1.03622(19) 0.1230(3) 0.0562(12) Uani 1 1 d . . . . .
H15 H 0.8919 1.0620 0.0805 0.067 Uiso 1 1 calc R U . . .
C3 C 0.9683(7) 0.99799(19) 0.1779(3) 0.0559(12) Uani 1 1 d . . . . .
H11 H 1.1145 0.9972 0.1737 0.067 Uiso 1 1 calc R U . . .
C4 C 0.8796(6) 0.96060(17) 0.2396(3) 0.0448(10) Uani 1 1 d . . . . .
H14 H 0.9652 0.9342 0.2777 0.054 Uiso 1 1 calc R U . . .
C5 C 0.6623(6) 0.96292(16) 0.2440(3) 0.0414(10) Uani 1 1 d . . . . .
C6 C 0.5511(7) 0.92486(17) 0.3109(3) 0.0470(11) Uani 1 1 d . . . . .
C7 C 0.6137(6) 0.84412(16) 0.4215(3) 0.0424(10) Uani 1 1 d . . . . .
H7 H 0.4853 0.8605 0.4445 0.051 Uiso 1 1 calc R U . . .
C8 C 0.5670(6) 0.78294(16) 0.3804(3) 0.0401(10) Uani 1 1 d . . . . .
C9 C 0.4917(6) 0.74336(16) 0.4573(3) 0.0383(9) Uani 1 1 d . . . . .
C10 C 0.6161(7) 0.69734(17) 0.4985(3) 0.0483(11) Uani 1 1 d . . . . .
H10 H 0.7459 0.6884 0.4766 0.058 Uiso 1 1 calc R U . . .
C11 C 0.5439(10) 0.66486(19) 0.5728(3) 0.0631(14) Uani 1 1 d . . . . .
H18 H 0.6256 0.6338 0.5999 0.076 Uiso 1 1 calc R U . . .
C12 C 0.3546(10) 0.6780(2) 0.6065(3) 0.0644(14) Uani 1 1 d . . . . .
H13 H 0.3095 0.6568 0.6573 0.077 Uiso 1 1 calc R U . . .
C13 C 0.2317(8) 0.7230(2) 0.5644(3) 0.0608(13) Uani 1 1 d . . . . .
H12 H 0.1018 0.7317 0.5865 0.073 Uiso 1 1 calc R U . . .
C14 C 0.2972(7) 0.75511(18) 0.4907(3) 0.0482(11) Uani 1 1 d . . . . .
H16 H 0.2110 0.7851 0.4628 0.058 Uiso 1 1 calc R U . . .
C15 C 0.7869(8) 0.8824(2) 0.5766(4) 0.0639(14) Uani 1 1 d . . . . .
C16 C 0.796(2) 0.9427(3) 0.5420(6) 0.204(6) Uani 1 1 d . . . . .
H22A H 0.9076 0.9462 0.5012 0.306 Uiso 1 1 calc R U . . .
H22B H 0.8250 0.9685 0.5966 0.306 Uiso 1 1 calc R U . . .
H22C H 0.6612 0.9529 0.5056 0.306 Uiso 1 1 calc R U . . .
C17 C 0.9816(12) 0.8660(3) 0.6420(5) 0.140(3) Uani 1 1 d . . . . .
H23A H 1.1061 0.8745 0.6110 0.210 Uiso 1 1 calc R U . . .
H23B H 0.9777 0.8251 0.6561 0.210 Uiso 1 1 calc R U . . .
H23C H 0.9875 0.8878 0.7013 0.210 Uiso 1 1 calc R U . . .
C18 C 0.6017(14) 0.8723(5) 0.6317(6) 0.213(6) Uani 1 1 d . . . . .
H24A H 0.6423 0.8452 0.6835 0.319 Uiso 1 1 calc R U . . .
H24B H 0.4839 0.8566 0.5889 0.319 Uiso 1 1 calc R U . . .
H24C H 0.5597 0.9085 0.6583 0.319 Uiso 1 1 calc R U . . .
Cl1 Cl 0.35784(18) 0.78959(5) 0.27947(8) 0.0588(3) Uani 1 1 d . . . . .
Cl2 Cl 0.79816(18) 0.75528(5) 0.33355(8) 0.0578(3) Uani 1 1 d . . . . .
N1 N 0.5308(5) 1.00054(14) 0.1905(2) 0.0469(9) Uani 1 1 d . . . . .
O1 O 0.3741(5) 0.93389(13) 0.3320(2) 0.0652(9) Uani 1 1 d . . . . .
O2 O 0.6830(4) 0.88112(11) 0.34653(19) 0.0452(7) Uani 1 1 d . . . . .
O3 O 0.7769(4) 0.84025(11) 0.4968(2) 0.0469(7) Uani 1 1 d . . . . .


_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
Br1 C1 1.907(4) . ?
C1 N1 1.310(5) . ?
C1 C2 1.387(6) . ?
C2 C3 1.368(6) . ?
C3 C4 1.378(5) . ?
C4 C5 1.378(5) . ?
C5 N1 1.351(5) . ?
C5 C6 1.509(6) . ?
C6 O1 1.205(5) . ?
C6 O2 1.355(4) . ?
C7 O3 1.374(4) . ?
C7 O2 1.452(4) . ?
C7 C8 1.529(5) . ?
C8 C9 1.521(5) . ?
C8 Cl2 1.784(4) . ?
C8 Cl1 1.804(4) . ?
C9 C14 1.389(5) . ?
C9 C10 1.393(5) . ?
C10 C11 1.394(6) . ?
C11 C12 1.367(7) . ?
C12 C13 1.374(7) . ?
C13 C14 1.365(6) . ?
C15 O3 1.465(5) . ?
C15 C16 1.467(8) . ?
C15 C17 1.479(7) . ?
C15 C18 1.491(9) . ?

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
N1 C1 C2 125.1(4) . . ?
N1 C1 Br1 115.5(3) . . ?
C2 C1 Br1 119.5(3) . . ?
C3 C2 C1 117.8(4) . . ?
C2 C3 C4 118.9(4) . . ?
C3 C4 C5 119.0(4) . . ?
N1 C5 C4 122.9(4) . . ?
N1 C5 C6 114.1(4) . . ?
C4 C5 C6 123.0(4) . . ?
O1 C6 O2 125.5(4) . . ?
O1 C6 C5 124.4(4) . . ?
O2 C6 C5 110.0(4) . . ?
O3 C7 O2 108.7(3) . . ?
O3 C7 C8 108.4(3) . . ?
O2 C7 C8 109.3(3) . . ?
C9 C8 C7 110.4(3) . . ?
C9 C8 Cl2 112.6(3) . . ?
C7 C8 Cl2 109.6(3) . . ?
C9 C8 Cl1 109.5(3) . . ?
C7 C8 Cl1 107.4(3) . . ?
Cl2 C8 Cl1 107.2(2) . . ?
C14 C9 C10 118.9(4) . . ?
C14 C9 C8 119.0(4) . . ?
C10 C9 C8 122.1(4) . . ?
C9 C10 C11 119.3(4) . . ?
C12 C11 C10 120.9(5) . . ?
C11 C12 C13 119.3(5) . . ?
C14 C13 C12 121.1(5) . . ?
C13 C14 C9 120.5(4) . . ?
O3 C15 C16 112.0(5) . . ?
O3 C15 C17 104.5(4) . . ?
C16 C15 C17 112.2(6) . . ?
O3 C15 C18 108.8(4) . . ?
C16 C15 C18 112.3(8) . . ?
C17 C15 C18 106.7(6) . . ?
C1 N1 C5 116.3(4) . . ?
C6 O2 C7 118.0(3) . . ?
C7 O3 C15 119.3(3) . . ?

_refine_diff_density_max         0.547
_refine_diff_density_min         -0.546
_refine_diff_density_rms         0.068

