# Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry.
# This journal is © The Royal Society of Chemistry 2016

####################################################################### 
# 
# 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_qwb_243g_0m
_database_code_depnum_ccdc_archive 'CCDC 1453369'
_audit_update_record             
;
2016-02-20 deposited with the CCDC.
2016-11-24 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-97
_chemical_name_systematic        
; 
 ? 
;
_chemical_name_common            ?
_chemical_melting_point          'not measured'
_chemical_formula_moiety         'C16 H10 N2 O'
_chemical_formula_sum            'C16 H10 N2 O'
_chemical_formula_weight         246.26

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           orthorhombic
_symmetry_space_group_name_H-M   Pca2(1)

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

_cell_length_a                   24.4406(8)
_cell_length_b                   4.3182(2)
_cell_length_c                   11.0826(4)
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_volume                     1169.65(8)
_cell_formula_units_Z            4
_cell_measurement_temperature    298(2)
_cell_measurement_reflns_used    0.976
_cell_measurement_theta_min      0.979
_cell_measurement_theta_max      0.996

_exptl_crystal_description       block
_exptl_crystal_colour            red
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.04
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.398
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             512
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.9566
_exptl_absorpt_correction_T_max  0.9964
_exptl_absorpt_process_details   ?

_exptl_special_details           
; 
 ? 
;

_diffrn_ambient_temperature      298(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  'CCD area detector'
_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            6439
_diffrn_reflns_av_R_equivalents  0.0717
_diffrn_reflns_av_sigmaI/netI    0.1110
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_k_max       3
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_theta_min         2.48
_diffrn_reflns_theta_max         25.99
_reflns_number_total             2272
_reflns_number_gt                1149
_reflns_threshold_expression     >2sigma(I)

_computing_data_collection       ?
_computing_cell_refinement       ?
_computing_data_reduction        ?
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_molecular_graphics    ?
_computing_publication_material  ?

_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)+(0.0060P)²+0.0000P] 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_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -1(2)
_refine_ls_number_reflns         2272
_refine_ls_number_parameters     172
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.1002
_refine_ls_R_factor_gt           0.0397
_refine_ls_wR_factor_ref         0.0649
_refine_ls_wR_factor_gt          0.0557
_refine_ls_goodness_of_fit_ref   0.831
_refine_ls_restrained_S_all      0.831
_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
O1 O 0.64212(8) 0.7455(6) 0.6646(2) 0.0799(8) Uani 1 1 d . . .
N1 N 0.47102(10) 0.5311(5) 0.6993(2) 0.0483(7) Uani 1 1 d . . .
H1 H 0.4534 0.6135 0.7583 0.058 Uiso 1 1 calc R . .
N2 N 0.60491(9) 0.2892(5) 0.4166(2) 0.0465(7) Uani 1 1 d . . .
C6 C 0.49092(11) 0.2461(6) 0.5346(2) 0.0376(7) Uani 1 1 d . . .
C9 C 0.59199(11) 0.4198(7) 0.5193(3) 0.0406(8) Uani 1 1 d . . .
C7 C 0.53971(11) 0.4092(7) 0.5741(2) 0.0394(7) Uani 1 1 d . . .
C16 C 0.66230(11) 0.3539(7) 0.3969(3) 0.0444(8) Uani 1 1 d . . .
C5 C 0.47897(11) 0.0386(7) 0.4444(3) 0.0444(8) Uani 1 1 d . . .
H5 H 0.5065 -0.0279 0.3926 0.053 Uiso 1 1 calc R . .
C8 C 0.52472(12) 0.5776(7) 0.6748(3) 0.0490(8) Uani 1 1 d . . .
H8 H 0.5480 0.7041 0.7192 0.059 Uiso 1 1 calc R . .
C11 C 0.68543(12) 0.5313(7) 0.4872(3) 0.0460(8) Uani 1 1 d . . .
C1 C 0.44903(12) 0.3315(7) 0.6153(3) 0.0431(8) Uani 1 1 d . . .
C2 C 0.39576(12) 0.2235(7) 0.6033(3) 0.0509(9) Uani 1 1 d . . .
H2 H 0.3684 0.2857 0.6564 0.061 Uiso 1 1 calc R . .
C10 C 0.64118(13) 0.5951(7) 0.5736(3) 0.0503(9) Uani 1 1 d . . .
C4 C 0.42576(12) -0.0729(6) 0.4303(3) 0.0537(9) Uani 1 1 d . . .
H4 H 0.4175 -0.2092 0.3679 0.064 Uiso 1 1 calc R . .
C13 C 0.77154(11) 0.5128(7) 0.3892(3) 0.0545(10) Uani 1 1 d . . .
H13 H 0.8084 0.5659 0.3854 0.065 Uiso 1 1 calc R . .
C3 C 0.38487(12) 0.0228(7) 0.5110(3) 0.0535(9) Uani 1 1 d . . .
H3 H 0.3495 -0.0522 0.5014 0.064 Uiso 1 1 calc R . .
C15 C 0.69328(12) 0.2489(7) 0.3019(3) 0.0551(9) Uani 1 1 d . . .
H15 H 0.6781 0.1276 0.2411 0.066 Uiso 1 1 calc R . .
C14 C 0.74872(13) 0.3325(6) 0.3005(3) 0.0611(9) Uani 1 1 d . . .
H14 H 0.7707 0.2636 0.2375 0.073 Uiso 1 1 calc R . .
C12 C 0.73973(11) 0.6152(7) 0.4840(3) 0.0565(9) Uani 1 1 d . . .
H12 H 0.7547 0.7383 0.5445 0.068 Uiso 1 1 calc R . .

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
O1 0.0530(16) 0.1260(19) 0.0607(15) -0.0362(16) -0.0055(13) -0.0022(13)
N1 0.0479(17) 0.0546(16) 0.0424(16) -0.0028(16) 0.0092(14) 0.0068(14)
N2 0.0366(15) 0.0608(18) 0.0420(16) -0.0050(15) 0.0019(14) -0.0006(12)
C6 0.0410(18) 0.0405(18) 0.0313(17) 0.0052(15) 0.0021(16) 0.0055(16)
C9 0.0367(19) 0.051(2) 0.0345(18) 0.0016(16) -0.0055(16) 0.0027(16)
C7 0.0389(19) 0.047(2) 0.0321(17) 0.0028(17) 0.0005(16) 0.0072(15)
C16 0.0399(19) 0.054(2) 0.0398(18) 0.0027(17) 0.0028(17) 0.0014(17)
C5 0.0431(19) 0.048(2) 0.0424(18) 0.0040(17) 0.0056(15) 0.0058(16)
C8 0.0409(19) 0.059(2) 0.047(2) 0.004(2) -0.0011(17) 0.0030(17)
C11 0.036(2) 0.063(2) 0.0384(18) -0.0023(17) -0.0062(17) 0.0025(17)
C1 0.042(2) 0.043(2) 0.0441(19) 0.0074(17) 0.0071(18) 0.0007(17)
C2 0.046(2) 0.045(2) 0.061(2) 0.0061(19) 0.0121(19) 0.0050(17)
C10 0.050(2) 0.063(2) 0.037(2) -0.0075(19) -0.0058(18) 0.0059(18)
C4 0.055(2) 0.048(2) 0.057(2) 0.0016(19) -0.0013(19) -0.0072(18)
C13 0.040(2) 0.070(3) 0.054(2) 0.000(2) -0.0020(19) -0.005(2)
C3 0.041(2) 0.054(2) 0.065(2) 0.0085(19) 0.0011(19) -0.0035(17)
C15 0.051(2) 0.067(2) 0.048(2) -0.0163(19) 0.0034(19) -0.0120(19)
C14 0.048(2) 0.074(2) 0.062(2) 0.000(2) 0.017(2) -0.001(2)
C12 0.044(2) 0.072(2) 0.053(2) -0.006(2) -0.0083(19) -0.0046(19)

_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 C10 1.200(3) . ?
N1 C8 1.355(3) . ?
N1 C1 1.378(3) . ?
N1 H1 0.8600 . ?
N2 C9 1.309(3) . ?
N2 C16 1.447(3) . ?
C6 C5 1.373(3) . ?
C6 C1 1.409(3) . ?
C6 C7 1.453(3) . ?
C9 C7 1.415(3) . ?
C9 C10 1.543(4) . ?
C7 C8 1.381(3) . ?
C16 C15 1.374(3) . ?
C16 C11 1.381(3) . ?
C5 C4 1.395(3) . ?
C5 H5 0.9300 . ?
C8 H8 0.9300 . ?
C11 C12 1.376(3) . ?
C11 C10 1.470(4) . ?
C1 C2 1.389(3) . ?
C2 C3 1.367(4) . ?
C2 H2 0.9300 . ?
C4 C3 1.404(3) . ?
C4 H4 0.9300 . ?
C13 C14 1.372(4) . ?
C13 C12 1.380(3) . ?
C13 H13 0.9300 . ?
C3 H3 0.9300 . ?
C15 C14 1.403(3) . ?
C15 H15 0.9300 . ?
C14 H14 0.9300 . ?
C12 H12 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
C8 N1 C1 109.6(3) . . ?
C8 N1 H1 125.2 . . ?
C1 N1 H1 125.2 . . ?
C9 N2 C16 106.3(2) . . ?
C5 C6 C1 118.6(3) . . ?
C5 C6 C7 135.3(3) . . ?
C1 C6 C7 106.1(3) . . ?
N2 C9 C7 125.2(3) . . ?
N2 C9 C10 111.2(3) . . ?
C7 C9 C10 123.5(3) . . ?
C8 C7 C9 124.7(3) . . ?
C8 C7 C6 106.3(3) . . ?
C9 C7 C6 128.9(2) . . ?
C15 C16 C11 120.9(3) . . ?
C15 C16 N2 125.9(3) . . ?
C11 C16 N2 113.3(3) . . ?
C6 C5 C4 120.3(3) . . ?
C6 C5 H5 119.8 . . ?
C4 C5 H5 119.8 . . ?
N1 C8 C7 109.9(3) . . ?
N1 C8 H8 125.0 . . ?
C7 C8 H8 125.0 . . ?
C12 C11 C16 121.5(3) . . ?
C12 C11 C10 132.6(3) . . ?
C16 C11 C10 105.9(3) . . ?
N1 C1 C2 129.8(3) . . ?
N1 C1 C6 108.0(3) . . ?
C2 C1 C6 122.2(3) . . ?
C3 C2 C1 117.8(3) . . ?
C3 C2 H2 121.1 . . ?
C1 C2 H2 121.1 . . ?
O1 C10 C11 129.4(3) . . ?
O1 C10 C9 127.5(3) . . ?
C11 C10 C9 103.2(3) . . ?
C5 C4 C3 119.4(3) . . ?
C5 C4 H4 120.3 . . ?
C3 C4 H4 120.3 . . ?
C14 C13 C12 119.9(3) . . ?
C14 C13 H13 120.1 . . ?
C12 C13 H13 120.1 . . ?
C2 C3 C4 121.7(3) . . ?
C2 C3 H3 119.2 . . ?
C4 C3 H3 119.2 . . ?
C16 C15 C14 117.1(3) . . ?
C16 C15 H15 121.4 . . ?
C14 C15 H15 121.4 . . ?
C13 C14 C15 122.1(3) . . ?
C13 C14 H14 119.0 . . ?
C15 C14 H14 119.0 . . ?
C11 C12 C13 118.6(3) . . ?
C11 C12 H12 120.7 . . ?
C13 C12 H12 120.7 . . ?

_diffrn_measured_fraction_theta_max 0.997
_diffrn_reflns_theta_full        25.99
_diffrn_measured_fraction_theta_full 0.997
_refine_diff_density_max         0.125
_refine_diff_density_min         -0.184
_refine_diff_density_rms         0.039
