# Supplementary Information (SI) for Green Chemistry.
# This journal is © The Royal Society of Chemistry 2026

####################################################################### 
# 
# 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_d25185
_database_code_depnum_ccdc_archive 'CCDC 2526938'
loop_
_audit_author_name
_audit_author_address
'TING-SHEN GUO'
;Department of Chemistry, Soochow University
Taiwan
;
_audit_update_record             
;
2026-01-29 deposited with the CCDC.	2026-05-04 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-97
_chemical_name_systematic        
;
 ?
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         'C11 H12 N2'
_chemical_formula_sum            'C11 H12 N2'
_chemical_formula_weight         172.23

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'

_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 21/c'

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

_cell_length_a                   9.410(4)
_cell_length_b                   15.775(6)
_cell_length_c                   7.119(3)
_cell_angle_alpha                90.00
_cell_angle_beta                 110.139(13)
_cell_angle_gamma                90.00
_cell_volume                     992.1(7)
_cell_formula_units_Z            4
_cell_measurement_temperature    200(2)
_cell_measurement_reflns_used    736
_cell_measurement_theta_min      2.65
_cell_measurement_theta_max      19.62

_exptl_crystal_description       prism
_exptl_crystal_colour            colorless
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.02
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.153
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             368
_exptl_absorpt_coefficient_mu    0.070
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.9713
_exptl_absorpt_correction_T_max  0.9986
_exptl_absorpt_process_details   ?

_exptl_special_details           
;
 ?
;

_diffrn_ambient_temperature      200(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_monochromator  graphite
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       ?
_diffrn_detector_area_resol_mean ?
_diffrn_standards_number         ?
_diffrn_standards_interval_count ?
_diffrn_standards_interval_time  ?
_diffrn_standards_decay_%        ?
_diffrn_reflns_number            11543
_diffrn_reflns_av_R_equivalents  0.1202
_diffrn_reflns_av_sigmaI/netI    0.0783
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_theta_min         2.31
_diffrn_reflns_theta_max         24.99
_reflns_number_total             1755
_reflns_number_gt                997
_reflns_threshold_expression     >2sigma(I)

_computing_data_collection       ?
_computing_cell_refinement       ?
_computing_data_reduction        ?
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'

_refine_special_details          
;
 Refinement of F² against ALL reflections.  The weighted R-factor wR and
 goodness of fit S are based on F², conventional R-factors R are based
 on F, with F set to zero for negative F². The threshold expression of
 F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is
 not relevant to the choice of reflections for refinement.  R-factors based
 on F² are statistically about twice as large as those based on F, and R-
 factors based on ALL data will be even larger.
;

_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'calc w=1/[σ²(Fo²)+(0.0655P)²+0.2356P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    mixed
_refine_ls_extinction_method     none
_refine_ls_extinction_coef       ?
_refine_ls_number_reflns         1755
_refine_ls_number_parameters     119
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1156
_refine_ls_R_factor_gt           0.0591
_refine_ls_wR_factor_ref         0.1687
_refine_ls_wR_factor_gt          0.1329
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_restrained_S_all      1.024
_refine_ls_shift/su_max          0.000
_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_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_disorder_assembly
_atom_site_disorder_group
C1 C 0.1968(4) 0.44305(17) 0.2349(4) 0.0485(8) Uani 1 1 d . . .
H1A H 0.0863 0.4465 0.2072 0.058 Uiso 1 1 calc R . .
H1B H 0.2414 0.4073 0.3553 0.058 Uiso 1 1 calc R . .
C2 C 0.2247(3) 0.40168(16) 0.0590(4) 0.0403(7) Uani 1 1 d . . .
C3 C 0.1070(3) 0.36052(17) -0.0871(4) 0.0469(8) Uani 1 1 d . . .
H3 H 0.0075 0.3625 -0.0820 0.056 Uiso 1 1 calc R . .
C4 C 0.1341(3) 0.31671(18) -0.2399(5) 0.0503(8) Uani 1 1 d . . .
H4 H 0.0532 0.2886 -0.3387 0.060 Uiso 1 1 calc R . .
C5 C 0.2780(4) 0.31364(18) -0.2495(5) 0.0513(8) Uani 1 1 d . . .
H5 H 0.2963 0.2830 -0.3538 0.062 Uiso 1 1 calc R . .
C6 C 0.3947(4) 0.35507(18) -0.1078(5) 0.0508(8) Uani 1 1 d . . .
H6 H 0.4936 0.3535 -0.1149 0.061 Uiso 1 1 calc R . .
C7 C 0.3687(3) 0.39922(18) 0.0457(4) 0.0465(8) Uani 1 1 d . . .
H7 H 0.4499 0.4280 0.1425 0.056 Uiso 1 1 calc R . .
C8 C 0.2602(3) 0.57423(16) 0.4343(4) 0.0391(7) Uani 1 1 d . . .
C9 C 0.3229(4) 0.66219(18) 0.4441(5) 0.0591(9) Uani 1 1 d . . .
H9A H 0.2990 0.6949 0.5464 0.089 Uiso 1 1 calc R . .
H9B H 0.2778 0.6899 0.3137 0.089 Uiso 1 1 calc R . .
H9C H 0.4330 0.6593 0.4784 0.089 Uiso 1 1 calc R . .
C10 C 0.2084(3) 0.54302(17) 0.5764(4) 0.0414(7) Uani 1 1 d . . .
H10 H 0.1697 0.4869 0.5626 0.050 Uiso 1 1 calc R . .
C11 C 0.2102(3) 0.59118(18) 0.7431(5) 0.0434(7) Uani 1 1 d . . .
N1 N 0.2614(3) 0.52778(13) 0.2752(3) 0.0444(7) Uani 1 1 d . . .
H1 H 0.3030 0.5497 0.1928 0.053 Uiso 1 1 calc R . .
N2 N 0.2090(3) 0.62857(16) 0.8828(4) 0.0557(8) Uani 1 1 d . . .

loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_23
_atom_site_aniso_U_13
_atom_site_aniso_U_12
C1 0.060(2) 0.0431(16) 0.0495(19) -0.0067(14) 0.0281(17) -0.0066(14)
C2 0.0517(18) 0.0343(14) 0.0386(17) 0.0001(13) 0.0203(15) 0.0022(13)
C3 0.0460(18) 0.0465(16) 0.0476(19) -0.0039(15) 0.0154(16) 0.0025(14)
C4 0.054(2) 0.0454(17) 0.0452(19) -0.0061(15) 0.0096(16) 0.0022(15)
C5 0.068(2) 0.0445(16) 0.0463(19) -0.0032(15) 0.0258(18) 0.0051(16)
C6 0.0519(19) 0.0507(17) 0.057(2) -0.0056(16) 0.0277(17) -0.0001(15)
C7 0.0462(18) 0.0493(17) 0.0440(19) -0.0045(14) 0.0157(15) -0.0060(14)
C8 0.0460(17) 0.0387(15) 0.0348(16) 0.0021(13) 0.0166(14) 0.0000(12)
C9 0.088(3) 0.0502(18) 0.052(2) -0.0072(16) 0.0396(19) -0.0202(17)
C10 0.0503(18) 0.0386(14) 0.0393(17) -0.0031(13) 0.0207(15) -0.0056(13)
C11 0.0465(18) 0.0465(17) 0.0407(18) 0.0058(15) 0.0193(15) -0.0047(13)
N1 0.0591(16) 0.0408(13) 0.0407(15) -0.0029(11) 0.0269(13) -0.0077(11)
N2 0.0706(19) 0.0592(17) 0.0485(17) -0.0060(14) 0.0349(15) -0.0136(13)

_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
C1 N1 1.456(3) . ?
C1 C2 1.513(4) . ?
C1 H1A 0.9900 . ?
C1 H1B 0.9900 . ?
C2 C7 1.392(4) . ?
C2 C3 1.392(4) . ?
C3 C4 1.385(4) . ?
C3 H3 0.9500 . ?
C4 C5 1.380(4) . ?
C4 H4 0.9500 . ?
C5 C6 1.374(4) . ?
C5 H5 0.9500 . ?
C6 C7 1.386(4) . ?
C6 H6 0.9500 . ?
C7 H7 0.9500 . ?
C8 N1 1.352(3) . ?
C8 C10 1.357(4) . ?
C8 C9 1.500(4) . ?
C9 H9A 0.9800 . ?
C9 H9B 0.9800 . ?
C9 H9C 0.9800 . ?
C10 C11 1.404(4) . ?
C10 H10 0.9500 . ?
C11 N2 1.159(3) . ?
N1 H1 0.8800 . ?

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 112.3(2) . . ?
N1 C1 H1A 109.1 . . ?
C2 C1 H1A 109.1 . . ?
N1 C1 H1B 109.1 . . ?
C2 C1 H1B 109.1 . . ?
H1A C1 H1B 107.9 . . ?
C7 C2 C3 118.6(3) . . ?
C7 C2 C1 121.3(3) . . ?
C3 C2 C1 120.0(3) . . ?
C4 C3 C2 120.4(3) . . ?
C4 C3 H3 119.8 . . ?
C2 C3 H3 119.8 . . ?
C5 C4 C3 120.4(3) . . ?
C5 C4 H4 119.8 . . ?
C3 C4 H4 119.8 . . ?
C6 C5 C4 119.8(3) . . ?
C6 C5 H5 120.1 . . ?
C4 C5 H5 120.1 . . ?
C5 C6 C7 120.3(3) . . ?
C5 C6 H6 119.8 . . ?
C7 C6 H6 119.8 . . ?
C6 C7 C2 120.5(3) . . ?
C6 C7 H7 119.7 . . ?
C2 C7 H7 119.7 . . ?
N1 C8 C10 122.4(2) . . ?
N1 C8 C9 115.0(2) . . ?
C10 C8 C9 122.5(2) . . ?
C8 C9 H9A 109.5 . . ?
C8 C9 H9B 109.5 . . ?
H9A C9 H9B 109.5 . . ?
C8 C9 H9C 109.5 . . ?
H9A C9 H9C 109.5 . . ?
H9B C9 H9C 109.5 . . ?
C8 C10 C11 122.0(3) . . ?
C8 C10 H10 119.0 . . ?
C11 C10 H10 119.0 . . ?
N2 C11 C10 177.5(3) . . ?
C8 N1 C1 122.6(2) . . ?
C8 N1 H1 118.7 . . ?
C1 N1 H1 118.7 . . ?

_diffrn_measured_fraction_theta_max 1.000
_diffrn_reflns_theta_full        24.99
_diffrn_measured_fraction_theta_full 1.000
_refine_diff_density_max         0.168
_refine_diff_density_min         -0.231
_refine_diff_density_rms         0.049
