# Electronic Supplementary Material (ESI) for ChemComm.
# This journal is © The Royal Society of Chemistry 2015

####################################################################### 
# 
# 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_N_oxide
_database_code_depnum_ccdc_archive 'CCDC 1430321'
_audit_update_record             
;
2015-10-09 deposited with the CCDC.
2015-11-23 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-97
_chemical_name_systematic        
; 
 ? 
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C29 H21 N O'
_chemical_formula_weight         399.47

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   P2(1)2(1)2(1)

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

_cell_length_a                   9.002(2)
_cell_length_b                   13.225(3)
_cell_length_c                   17.293(4)
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_volume                     2058.7(8)
_cell_formula_units_Z            4
_cell_measurement_temperature    100(2)
_cell_measurement_reflns_used    ?
_cell_measurement_theta_min      2.36
_cell_measurement_theta_max      24.33

_exptl_crystal_description       Needle
_exptl_crystal_colour            Colourless
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.13
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.289
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             840
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_type   Numerical
_exptl_absorpt_correction_T_min  0.9847
_exptl_absorpt_correction_T_max  0.9900
_exptl_absorpt_process_details   SADABS

_exptl_special_details           
; 
 ? 
;

_diffrn_ambient_temperature      100(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 APEX-II CCD'
_diffrn_measurement_method       'φ and ω scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            10700
_diffrn_reflns_av_R_equivalents  0.0547
_diffrn_reflns_av_sigmaI/netI    0.0607
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_theta_min         1.94
_diffrn_reflns_theta_max         25.38
_reflns_number_total             3767
_reflns_number_gt                3065
_reflns_threshold_expression     >2sigma(I)

_computing_data_collection       'Bruker APEX2'
_computing_cell_refinement       'Bruker SAINT'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'

_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.

All the non-hydrogen atoms were refined anisotropically and the H-atoms
were refined as riding model. 
;

_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)+(0.0478P)²+0.2935P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    constr
_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   5(2)
_refine_ls_number_reflns         3767
_refine_ls_number_parameters     280
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0624
_refine_ls_R_factor_gt           0.0451
_refine_ls_wR_factor_ref         0.1162
_refine_ls_wR_factor_gt          0.0966
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_restrained_S_all      1.070
_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 0.2251(2) 0.05923(13) 0.53655(10) 0.0321(5) Uani 1 1 d . . .
N2 N 0.1216(2) 0.17299(15) 0.36494(12) 0.0256(5) Uani 1 1 d . . .
C3 C 0.0355(3) -0.13489(19) 0.34280(16) 0.0311(6) Uani 1 1 d . . .
H3A H 0.0147 -0.2051 0.3387 0.037 Uiso 1 1 calc R . .
C4 C 0.0947(3) 0.07131(18) 0.35689(14) 0.0237(6) Uani 1 1 d . . .
C5 C 0.1887(3) 0.2203(2) 0.30779(14) 0.0252(6) Uani 1 1 d . . .
H5A H 0.2051 0.2909 0.3133 0.030 Uiso 1 1 calc R . .
C6 C 0.1057(3) -0.0867(2) 0.28408(15) 0.0311(6) Uani 1 1 d . . .
H6A H 0.1341 -0.1236 0.2393 0.037 Uiso 1 1 calc R . .
C7 C 0.0217(3) 0.01924(18) 0.41802(14) 0.0252(6) Uani 1 1 d . . .
C8 C 0.1201(3) 0.39276(19) 0.65946(15) 0.0294(6) Uani 1 1 d . . .
H8A H 0.1229 0.4545 0.6874 0.035 Uiso 1 1 calc R . .
C9 C -0.0103(3) 0.27684(18) 0.57623(14) 0.0248(6) Uani 1 1 d . . .
H9A H -0.0970 0.2593 0.5480 0.030 Uiso 1 1 calc R . .
C10 C 0.2368(3) 0.23886(18) 0.61972(13) 0.0237(6) Uani 1 1 d . . .
H10A H 0.3215 0.1960 0.6200 0.028 Uiso 1 1 calc R . .
C11 C -0.0045(3) 0.36718(19) 0.61628(14) 0.0271(6) Uani 1 1 d . . .
H11A H -0.0866 0.4122 0.6143 0.033 Uiso 1 1 calc R . .
C12 C -0.1313(3) 0.03144(18) 0.54324(13) 0.0234(6) Uani 1 1 d . . .
C13 C -0.1905(3) -0.0932(2) 0.63979(15) 0.0315(7) Uani 1 1 d . . .
H13A H -0.1598 -0.1474 0.6721 0.038 Uiso 1 1 calc R . .
C14 C 0.1122(3) 0.21090(18) 0.57726(14) 0.0235(6) Uani 1 1 d . . .
C15 C 0.1157(3) 0.11332(19) 0.53338(14) 0.0240(6) Uani 1 1 d . . .
C16 C -0.0219(3) 0.08153(18) 0.48840(14) 0.0235(6) Uani 1 1 d . . .
H16A H -0.0700 0.1447 0.4689 0.028 Uiso 1 1 calc R . .
C17 C 0.2384(3) 0.1738(2) 0.23849(13) 0.0251(6) Uani 1 1 d . . .
C18 C -0.0071(3) -0.08159(18) 0.41003(15) 0.0283(6) Uani 1 1 d . . .
H18A H -0.0567 -0.1166 0.4505 0.034 Uiso 1 1 calc R . .
C19 C -0.0888(3) -0.04668(18) 0.59200(14) 0.0269(6) Uani 1 1 d . . .
H19A H 0.0117 -0.0684 0.5924 0.032 Uiso 1 1 calc R . .
C20 C 0.1372(3) 0.01760(19) 0.28884(14) 0.0259(6) Uani 1 1 d . . .
C21 C 0.3183(3) 0.23409(19) 0.17910(15) 0.0289(7) Uani 1 1 d . . .
C22 C -0.3810(3) 0.01696(19) 0.59295(14) 0.0301(6) Uani 1 1 d . . .
H22A H -0.4814 0.0391 0.5931 0.036 Uiso 1 1 calc R . .
C23 C -0.3371(3) -0.06155(19) 0.64099(15) 0.0290(6) Uani 1 1 d . . .
H23A H -0.4069 -0.0932 0.6743 0.035 Uiso 1 1 calc R . .
C24 C 0.4303(3) 0.30096(19) 0.20130(17) 0.0336(7) Uani 1 1 d . . .
H24A H 0.4535 0.3090 0.2545 0.040 Uiso 1 1 calc R . .
C25 C 0.2091(3) 0.0728(2) 0.22955(14) 0.0278(6) Uani 1 1 d . . .
H25A H 0.2373 0.0395 0.1831 0.033 Uiso 1 1 calc R . .
C26 C -0.2783(3) 0.06310(19) 0.54476(14) 0.0262(6) Uani 1 1 d . . .
H26A H -0.3089 0.1172 0.5123 0.031 Uiso 1 1 calc R . .
C27 C 0.2850(3) 0.2240(2) 0.10050(15) 0.0371(7) Uani 1 1 d . . .
H27A H 0.2098 0.1782 0.0844 0.045 Uiso 1 1 calc R . .
C28 C 0.2396(3) 0.3277(2) 0.66133(14) 0.0265(6) Uani 1 1 d . . .
H28A H 0.3245 0.3442 0.6915 0.032 Uiso 1 1 calc R . .
C29 C 0.4737(4) 0.3460(2) 0.06880(19) 0.0470(9) Uani 1 1 d . . .
H29A H 0.5269 0.3840 0.0313 0.056 Uiso 1 1 calc R . .
C30 C 0.5080(4) 0.3557(2) 0.14623(19) 0.0429(8) Uani 1 1 d . . .
H30A H 0.5852 0.4002 0.1619 0.052 Uiso 1 1 calc R . .
C31 C 0.3617(4) 0.2807(2) 0.04582(17) 0.0447(8) Uani 1 1 d . . .
H31A H 0.3373 0.2747 -0.0074 0.054 Uiso 1 1 calc R . .


_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 C15 1.218(3) . ?
N2 C5 1.316(3) . ?
N2 C4 1.374(3) . ?
C3 C6 1.355(4) . ?
C3 C18 1.413(4) . ?
C4 C7 1.423(3) . ?
C4 C20 1.427(3) . ?
C5 C17 1.419(3) . ?
C6 C20 1.411(4) . ?
C7 C18 1.366(3) . ?
C7 C16 1.521(3) . ?
C8 C28 1.378(4) . ?
C8 C11 1.390(4) . ?
C9 C11 1.382(3) . ?
C9 C14 1.406(4) . ?
C10 C28 1.378(3) . ?
C10 C14 1.391(4) . ?
C12 C19 1.387(3) . ?
C12 C26 1.388(4) . ?
C12 C16 1.519(3) . ?
C13 C19 1.378(4) . ?
C13 C23 1.385(4) . ?
C14 C15 1.497(3) . ?
C15 C16 1.522(4) . ?
C17 C25 1.370(4) . ?
C17 C21 1.486(4) . ?
C20 C25 1.415(4) . ?
C21 C24 1.396(4) . ?
C21 C27 1.398(4) . ?
C22 C26 1.386(4) . ?
C22 C23 1.387(4) . ?
C24 C30 1.386(4) . ?
C27 C31 1.391(4) . ?
C29 C30 1.380(5) . ?
C29 C31 1.386(5) . ?

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
C5 N2 C4 118.0(2) . . ?
C6 C3 C18 120.6(2) . . ?
N2 C4 C7 118.7(2) . . ?
N2 C4 C20 121.6(2) . . ?
C7 C4 C20 119.7(2) . . ?
N2 C5 C17 124.9(2) . . ?
C3 C6 C20 120.6(2) . . ?
C18 C7 C4 119.0(2) . . ?
C18 C7 C16 124.1(2) . . ?
C4 C7 C16 116.8(2) . . ?
C28 C8 C11 119.4(2) . . ?
C11 C9 C14 120.0(2) . . ?
C28 C10 C14 121.1(2) . . ?
C9 C11 C8 120.7(2) . . ?
C19 C12 C26 118.4(2) . . ?
C19 C12 C16 121.7(2) . . ?
C26 C12 C16 119.9(2) . . ?
C19 C13 C23 120.5(2) . . ?
C10 C14 C9 118.3(2) . . ?
C10 C14 C15 118.7(2) . . ?
C9 C14 C15 123.0(2) . . ?
O1 C15 C14 120.0(2) . . ?
O1 C15 C16 121.2(2) . . ?
C14 C15 C16 118.7(2) . . ?
C12 C16 C7 115.5(2) . . ?
C12 C16 C15 109.21(19) . . ?
C7 C16 C15 110.4(2) . . ?
C25 C17 C5 117.2(2) . . ?
C25 C17 C21 122.6(2) . . ?
C5 C17 C21 120.2(2) . . ?
C7 C18 C3 121.3(3) . . ?
C13 C19 C12 120.9(3) . . ?
C6 C20 C25 123.6(2) . . ?
C6 C20 C4 118.8(2) . . ?
C25 C20 C4 117.6(2) . . ?
C24 C21 C27 118.9(3) . . ?
C24 C21 C17 120.0(2) . . ?
C27 C21 C17 121.1(3) . . ?
C26 C22 C23 120.0(3) . . ?
C13 C23 C22 119.3(3) . . ?
C30 C24 C21 120.5(3) . . ?
C17 C25 C20 120.6(2) . . ?
C22 C26 C12 121.0(2) . . ?
C31 C27 C21 120.2(3) . . ?
C8 C28 C10 120.4(2) . . ?
C30 C29 C31 119.9(3) . . ?
C29 C30 C24 120.4(3) . . ?
C29 C31 C27 120.2(3) . . ?

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
C5 N2 C4 C7 -179.7(2) . . . . ?
C5 N2 C4 C20 -0.2(4) . . . . ?
C4 N2 C5 C17 -1.3(4) . . . . ?
C18 C3 C6 C20 -0.2(4) . . . . ?
N2 C4 C7 C18 179.2(2) . . . . ?
C20 C4 C7 C18 -0.3(4) . . . . ?
N2 C4 C7 C16 0.2(3) . . . . ?
C20 C4 C7 C16 -179.3(2) . . . . ?
C14 C9 C11 C8 -1.6(4) . . . . ?
C28 C8 C11 C9 0.8(4) . . . . ?
C28 C10 C14 C9 1.5(4) . . . . ?
C28 C10 C14 C15 -179.9(2) . . . . ?
C11 C9 C14 C10 0.5(4) . . . . ?
C11 C9 C14 C15 -178.1(2) . . . . ?
C10 C14 C15 O1 1.5(3) . . . . ?
C9 C14 C15 O1 -180.0(2) . . . . ?
C10 C14 C15 C16 178.6(2) . . . . ?
C9 C14 C15 C16 -2.8(3) . . . . ?
C19 C12 C16 C7 73.8(3) . . . . ?
C26 C12 C16 C7 -105.5(3) . . . . ?
C19 C12 C16 C15 -51.3(3) . . . . ?
C26 C12 C16 C15 129.3(2) . . . . ?
C18 C7 C16 C12 -13.3(4) . . . . ?
C4 C7 C16 C12 165.6(2) . . . . ?
C18 C7 C16 C15 111.2(3) . . . . ?
C4 C7 C16 C15 -69.9(3) . . . . ?
O1 C15 C16 C12 94.9(3) . . . . ?
C14 C15 C16 C12 -82.2(3) . . . . ?
O1 C15 C16 C7 -33.1(3) . . . . ?
C14 C15 C16 C7 149.8(2) . . . . ?
N2 C5 C17 C25 2.6(4) . . . . ?
N2 C5 C17 C21 -177.6(2) . . . . ?
C4 C7 C18 C3 0.6(4) . . . . ?
C16 C7 C18 C3 179.5(2) . . . . ?
C6 C3 C18 C7 -0.4(4) . . . . ?
C23 C13 C19 C12 -1.1(4) . . . . ?
C26 C12 C19 C13 1.2(4) . . . . ?
C16 C12 C19 C13 -178.1(2) . . . . ?
C3 C6 C20 C25 -179.5(3) . . . . ?
C3 C6 C20 C4 0.5(4) . . . . ?
N2 C4 C20 C6 -179.7(2) . . . . ?
C7 C4 C20 C6 -0.2(4) . . . . ?
N2 C4 C20 C25 0.3(4) . . . . ?
C7 C4 C20 C25 179.8(2) . . . . ?
C25 C17 C21 C24 -135.3(3) . . . . ?
C5 C17 C21 C24 44.8(4) . . . . ?
C25 C17 C21 C27 43.6(4) . . . . ?
C5 C17 C21 C27 -136.3(3) . . . . ?
C19 C13 C23 C22 0.6(4) . . . . ?
C26 C22 C23 C13 -0.3(4) . . . . ?
C27 C21 C24 C30 -0.5(4) . . . . ?
C17 C21 C24 C30 178.4(2) . . . . ?
C5 C17 C25 C20 -2.3(4) . . . . ?
C21 C17 C25 C20 177.8(2) . . . . ?
C6 C20 C25 C17 -178.9(3) . . . . ?
C4 C20 C25 C17 1.1(4) . . . . ?
C23 C22 C26 C12 0.5(4) . . . . ?
C19 C12 C26 C22 -0.9(4) . . . . ?
C16 C12 C26 C22 178.4(2) . . . . ?
C24 C21 C27 C31 -0.7(4) . . . . ?
C17 C21 C27 C31 -179.6(3) . . . . ?
C11 C8 C28 C10 1.1(4) . . . . ?
C14 C10 C28 C8 -2.3(4) . . . . ?
C31 C29 C30 C24 -0.4(4) . . . . ?
C21 C24 C30 C29 1.1(4) . . . . ?
C30 C29 C31 C27 -0.8(4) . . . . ?
C21 C27 C31 C29 1.4(4) . . . . ?

_diffrn_measured_fraction_theta_max 0.999
_diffrn_reflns_theta_full        25.38
_diffrn_measured_fraction_theta_full 0.999
_refine_diff_density_max         0.187
_refine_diff_density_min         -0.179
_refine_diff_density_rms         0.044
