# Electronic Supplementary Material (ESI) for Chemical Communications
# This journal is © The Royal Society of Chemistry 2013

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#                                CCDC 
# 
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# 
#  This CIF contains data from an original supplementary publication
#  deposited with the CCDC, and may include chemical, crystal,
#  experimental, refinement, atomic coordinates,
#  anisotropic displacement parameters and molecular geometry data,
#  as required by the journal to which it was submitted.
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#  fide research purposes only. It may contain copyright material
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data_p212121_a_a

_audit_creation_method           SHELXL-97
_chemical_name_systematic        
; 
 ? 
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C19 H18 N2 O6'
_chemical_formula_weight         370.35
_chemical_absolute_configuration syn

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                   10.4965(6)
_cell_length_b                   11.6262(7)
_cell_length_c                   14.6325(9)
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_volume                     1785.67(18)
_cell_formula_units_Z            4
_cell_measurement_temperature    93
_cell_measurement_reflns_used    4436
_cell_measurement_theta_min      2.24
_cell_measurement_theta_max      27.65
_exptl_crystal_description       block
_exptl_crystal_colour            colorless
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.16
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.378
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             776
_exptl_absorpt_coefficient_mu    0.104
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.9805
_exptl_absorpt_correction_T_max  0.9836
_exptl_absorpt_process_details   
;
Sheldrick, G. M. (2008) SADABS. University of G\"ottingen, Germany.
;
_exptl_special_details           
; 
 ? 
;

_diffrn_ambient_temperature      93
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_radiation_source         'Bruker TXS fine-focus rotating anode'
_diffrn_radiation_monochromator  'Bruker Helios multilayer confocal mirror'
_diffrn_measurement_device_type  'Bruker APEXII CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_detector_area_resol_mean 8.333
_diffrn_reflns_number            8700
_diffrn_reflns_av_R_equivalents  0.0272
_diffrn_reflns_av_sigmaI/netI    0.0306
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_theta_min         2.24
_diffrn_reflns_theta_max         25.17
_reflns_number_total             3208
_reflns_number_gt                3058
_reflns_threshold_expression     >2sigma(I)

_computing_data_collection       'Bruker Instrument Service (Bruker AXS)'
_computing_cell_refinement       'APEX2 (Bruker AXS, 2006)'
_computing_data_reduction        'SAINT (Bruker AXS, 2004)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_molecular_graphics    'XSHEL (Bruker AXS,2002)'
_computing_publication_material  'XCIF (Bruker AXS, 2001)'
_refine_special_details          
; 
 Refinement of F^2^ against ALL reflections.  The weighted R-factor wR and 
 goodness of fit S are based on F^2^, conventional R-factors R are based 
 on F, with F set to zero for negative F^2^. The threshold expression of 
 F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is 
 not relevant to the choice of reflections for refinement.  R-factors based 
 on F^2^ 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/[\s^2^(Fo^2^)+(0.0303P)^2^+0.4954P] where P=(Fo^2^+2Fc^2^)/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     SHELXL
_refine_ls_extinction_coef       0.0094(10)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.9(8)
_refine_ls_number_reflns         3208
_refine_ls_number_parameters     254
_refine_ls_number_restraints     71
_refine_ls_R_factor_all          0.0317
_refine_ls_R_factor_gt           0.0299
_refine_ls_wR_factor_ref         0.0720
_refine_ls_wR_factor_gt          0.0710
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_restrained_S_all      1.029
_refine_ls_shift/su_max          0.006
_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 0.40483(16) 0.66460(16) 0.59512(12) 0.0244(4) Uani 1 1 d U . .
H3 H 0.4667 0.6330 0.6396 0.029 Uiso 1 1 calc R . .
H2 H 0.4286 0.7455 0.5825 0.029 Uiso 1 1 calc R . .
C2 C 0.41132(15) 0.59449(14) 0.50571(11) 0.0185(3) Uani 1 1 d U . .
C3 C 0.54181(16) 0.61289(14) 0.46723(12) 0.0206(4) Uani 1 1 d U . .
C4 C 0.38248(14) 0.46559(14) 0.52459(11) 0.0178(3) Uani 1 1 d U . .
H4 H 0.3191 0.4590 0.5753 0.021 Uiso 1 1 calc R . .
C5 C 0.33639(15) 0.39655(13) 0.44198(11) 0.0167(3) Uani 1 1 d U . .
H5 H 0.2875 0.3276 0.4629 0.020 Uiso 1 1 calc R . .
C6 C 0.25753(14) 0.46512(13) 0.37439(11) 0.0163(3) Uani 1 1 d U . .
H6 H 0.2518 0.4231 0.3149 0.020 Uiso 1 1 calc R . .
C7 C 0.03706(15) 0.41960(15) 0.37419(11) 0.0223(4) Uani 1 1 d U . .
C8 C -0.09111(16) 0.45402(18) 0.40774(13) 0.0325(5) Uani 1 1 d U . .
H8 H -0.1539 0.4432 0.3589 0.049 Uiso 1 1 calc R . .
H9 H -0.0895 0.5351 0.4259 0.049 Uiso 1 1 calc R . .
H7 H -0.1144 0.4065 0.4605 0.049 Uiso 1 1 calc R . .
C9 C 0.31175(15) 0.58472(13) 0.35933(11) 0.0172(3) Uani 1 1 d U . .
H10 H 0.3981 0.5785 0.3308 0.021 Uiso 1 1 calc R . .
C10 C 0.22767(16) 0.65050(14) 0.29934(11) 0.0213(4) Uani 1 1 d U . .
C11 C 0.15411(18) 0.69538(16) 0.24974(13) 0.0289(4) Uani 1 1 d U . .
C12 C 0.54657(16) 0.35319(14) 0.47432(11) 0.0204(4) Uani 1 1 d U . .
C13 C 0.47573(16) 0.28981(14) 0.32328(11) 0.0199(4) Uani 1 1 d U . .
H15 H 0.5667 0.2904 0.3053 0.024 Uiso 1 1 calc R . .
H14 H 0.4265 0.3248 0.2727 0.024 Uiso 1 1 calc R . .
C14 C 0.43325(15) 0.16626(14) 0.33490(10) 0.0194(4) Uani 1 1 d U . .
C15 C 0.30730(17) 0.13432(16) 0.31975(12) 0.0269(4) Uani 1 1 d U . .
H16 H 0.2466 0.1901 0.3009 0.032 Uiso 1 1 calc R . .
C16 C 0.27040(18) 0.02075(18) 0.33226(12) 0.0325(4) Uani 1 1 d U . .
H17 H 0.1843 -0.0007 0.3218 0.039 Uiso 1 1 calc R . .
C17 C 0.3570(2) -0.06120(16) 0.35963(13) 0.0339(5) Uani 1 1 d U . .
H18 H 0.3305 -0.1385 0.3688 0.041 Uiso 1 1 calc R . .
C18 C 0.48275(18) -0.03048(16) 0.37367(12) 0.0300(4) Uani 1 1 d U . .
H19 H 0.5431 -0.0870 0.3915 0.036 Uiso 1 1 calc R . .
C19 C 0.52088(17) 0.08280(15) 0.36171(11) 0.0231(4) Uani 1 1 d U . .
H20 H 0.6073 0.1036 0.3719 0.028 Uiso 1 1 calc R . .
H1 H 0.241(2) 0.720(2) 0.6076(16) 0.046(7) Uiso 1 1 d . . .
H11 H 0.093(2) 0.7303(19) 0.2117(15) 0.044(6) Uiso 1 1 d . . .
N1 N 0.63843(15) 0.63949(13) 0.43815(11) 0.0293(4) Uani 1 1 d U . .
N2 N 0.46012(12) 0.36103(12) 0.40531(9) 0.0178(3) Uani 1 1 d U . .
O1 O 0.28173(11) 0.66103(12) 0.63301(9) 0.0278(3) Uani 1 1 d U . .
O2 O 0.32149(10) 0.64460(9) 0.44538(8) 0.0187(3) Uani 1 1 d U . .
O3 O 0.13194(10) 0.48064(10) 0.41256(7) 0.0195(2) Uani 1 1 d U . .
O4 O 0.05847(13) 0.34530(15) 0.31933(11) 0.0490(4) Uani 1 1 d U . .
O5 O 0.49936(11) 0.40932(10) 0.55053(8) 0.0217(3) Uani 1 1 d U . .
O6 O 0.64949(11) 0.30758(10) 0.47411(8) 0.0274(3) Uani 1 1 d U . .

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 0.0242(9) 0.0229(9) 0.0262(9) -0.0060(7) -0.0061(7) 0.0027(7)
C2 0.0148(8) 0.0191(8) 0.0215(8) 0.0002(7) -0.0056(6) 0.0012(6)
C3 0.0205(9) 0.0171(8) 0.0244(8) -0.0004(7) -0.0063(7) -0.0007(7)
C4 0.0142(8) 0.0200(8) 0.0192(8) 0.0026(7) -0.0026(6) 0.0015(7)
C5 0.0156(8) 0.0149(7) 0.0198(8) 0.0024(6) 0.0012(6) -0.0005(6)
C6 0.0126(7) 0.0185(8) 0.0178(7) -0.0022(6) -0.0005(6) 0.0010(6)
C7 0.0197(8) 0.0276(9) 0.0198(8) -0.0011(8) -0.0017(7) -0.0067(7)
C8 0.0158(8) 0.0507(13) 0.0309(9) -0.0083(9) -0.0008(8) -0.0034(8)
C9 0.0163(7) 0.0168(8) 0.0186(8) 0.0018(7) -0.0026(6) 0.0014(7)
C10 0.0204(8) 0.0194(8) 0.0240(8) 0.0005(7) -0.0009(7) 0.0023(7)
C11 0.0284(10) 0.0284(10) 0.0299(10) 0.0035(8) -0.0063(9) 0.0090(8)
C12 0.0204(9) 0.0151(8) 0.0257(9) 0.0049(7) -0.0012(7) -0.0007(7)
C13 0.0208(8) 0.0208(8) 0.0182(8) 0.0037(7) 0.0021(7) 0.0025(7)
C14 0.0238(9) 0.0207(8) 0.0138(8) -0.0015(6) 0.0047(6) 0.0022(7)
C15 0.0244(9) 0.0291(9) 0.0272(9) -0.0078(8) 0.0002(8) 0.0019(8)
C16 0.0319(10) 0.0338(10) 0.0317(10) -0.0145(8) 0.0069(8) -0.0078(9)
C17 0.0530(12) 0.0208(9) 0.0279(9) -0.0067(8) 0.0117(9) -0.0046(9)
C18 0.0450(11) 0.0195(9) 0.0256(9) -0.0021(8) 0.0026(8) 0.0077(8)
C19 0.0269(9) 0.0222(8) 0.0201(8) -0.0012(7) 0.0024(7) 0.0044(7)
N1 0.0216(8) 0.0290(8) 0.0372(9) -0.0003(7) -0.0016(7) -0.0063(7)
N2 0.0157(6) 0.0166(6) 0.0213(7) 0.0016(6) -0.0010(6) 0.0005(6)
O1 0.0252(6) 0.0324(7) 0.0256(6) -0.0043(6) -0.0011(5) 0.0093(6)
O2 0.0187(6) 0.0158(6) 0.0218(6) -0.0014(5) -0.0055(5) 0.0031(5)
O3 0.0126(5) 0.0247(6) 0.0213(5) -0.0041(5) -0.0002(4) -0.0021(5)
O4 0.0254(7) 0.0649(10) 0.0568(9) -0.0392(8) 0.0070(7) -0.0173(7)
O5 0.0202(6) 0.0227(6) 0.0221(6) 0.0018(5) -0.0040(5) 0.0047(5)
O6 0.0200(6) 0.0266(7) 0.0355(7) 0.0038(6) -0.0030(5) 0.0058(5)

_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 O1 1.407(2) . ?
C1 C2 1.543(2) . ?
C1 H3 0.9900 . ?
C1 H2 0.9900 . ?
C2 O2 1.4169(19) . ?
C2 C3 1.496(2) . ?
C2 C4 1.554(2) . ?
C3 N1 1.142(2) . ?
C4 O5 1.4412(18) . ?
C4 C5 1.530(2) . ?
C4 H4 1.0000 . ?
C5 N2 1.465(2) . ?
C5 C6 1.516(2) . ?
C5 H5 1.0000 . ?
C6 O3 1.4430(18) . ?
C6 C9 1.519(2) . ?
C6 H6 1.0000 . ?
C7 O4 1.200(2) . ?
C7 O3 1.3455(19) . ?
C7 C8 1.487(2) . ?
C8 H8 0.9800 . ?
C8 H9 0.9800 . ?
C8 H7 0.9800 . ?
C9 O2 1.4424(19) . ?
C9 C10 1.461(2) . ?
C9 H10 1.0000 . ?
C10 C11 1.181(2) . ?
C11 H11 0.94(2) . ?
C12 O6 1.2034(19) . ?
C12 N2 1.361(2) . ?
C12 O5 1.384(2) . ?
C13 N2 1.467(2) . ?
C13 C14 1.514(2) . ?
C13 H15 0.9900 . ?
C13 H14 0.9900 . ?
C14 C15 1.391(2) . ?
C14 C19 1.393(2) . ?
C15 C16 1.388(3) . ?
C15 H16 0.9500 . ?
C16 C17 1.376(3) . ?
C16 H17 0.9500 . ?
C17 C18 1.382(3) . ?
C17 H18 0.9500 . ?
C18 C19 1.388(3) . ?
C18 H19 0.9500 . ?
C19 H20 0.9500 . ?
O1 H1 0.88(3) . ?

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
O1 C1 C2 111.05(14) . . ?
O1 C1 H3 109.4 . . ?
C2 C1 H3 109.4 . . ?
O1 C1 H2 109.4 . . ?
C2 C1 H2 109.4 . . ?
H3 C1 H2 108.0 . . ?
O2 C2 C3 108.41(13) . . ?
O2 C2 C1 106.36(13) . . ?
C3 C2 C1 106.50(13) . . ?
O2 C2 C4 112.19(13) . . ?
C3 C2 C4 112.53(13) . . ?
C1 C2 C4 110.50(13) . . ?
N1 C3 C2 172.50(18) . . ?
O5 C4 C5 103.84(12) . . ?
O5 C4 C2 108.60(12) . . ?
C5 C4 C2 115.30(13) . . ?
O5 C4 H4 109.6 . . ?
C5 C4 H4 109.6 . . ?
C2 C4 H4 109.6 . . ?
N2 C5 C6 113.16(13) . . ?
N2 C5 C4 99.03(12) . . ?
C6 C5 C4 114.34(13) . . ?
N2 C5 H5 109.9 . . ?
C6 C5 H5 109.9 . . ?
C4 C5 H5 109.9 . . ?
O3 C6 C5 108.18(12) . . ?
O3 C6 C9 106.51(12) . . ?
C5 C6 C9 111.81(13) . . ?
O3 C6 H6 110.1 . . ?
C5 C6 H6 110.1 . . ?
C9 C6 H6 110.1 . . ?
O4 C7 O3 121.33(15) . . ?
O4 C7 C8 125.71(16) . . ?
O3 C7 C8 112.95(14) . . ?
C7 C8 H8 109.5 . . ?
C7 C8 H9 109.5 . . ?
H8 C8 H9 109.5 . . ?
C7 C8 H7 109.5 . . ?
H8 C8 H7 109.5 . . ?
H9 C8 H7 109.5 . . ?
O2 C9 C10 108.34(13) . . ?
O2 C9 C6 109.98(13) . . ?
C10 C9 C6 109.89(13) . . ?
O2 C9 H10 109.5 . . ?
C10 C9 H10 109.5 . . ?
C6 C9 H10 109.5 . . ?
C11 C10 C9 174.46(18) . . ?
C10 C11 H11 177.8(14) . . ?
O6 C12 N2 128.78(16) . . ?
O6 C12 O5 122.10(15) . . ?
N2 C12 O5 109.12(13) . . ?
N2 C13 C14 114.25(13) . . ?
N2 C13 H15 108.7 . . ?
C14 C13 H15 108.7 . . ?
N2 C13 H14 108.7 . . ?
C14 C13 H14 108.7 . . ?
H15 C13 H14 107.6 . . ?
C15 C14 C19 119.10(16) . . ?
C15 C14 C13 121.03(16) . . ?
C19 C14 C13 119.87(15) . . ?
C16 C15 C14 119.87(18) . . ?
C16 C15 H16 120.1 . . ?
C14 C15 H16 120.1 . . ?
C17 C16 C15 120.83(18) . . ?
C17 C16 H17 119.6 . . ?
C15 C16 H17 119.6 . . ?
C16 C17 C18 119.67(17) . . ?
C16 C17 H18 120.2 . . ?
C18 C17 H18 120.2 . . ?
C17 C18 C19 120.12(17) . . ?
C17 C18 H19 119.9 . . ?
C19 C18 H19 119.9 . . ?
C18 C19 C14 120.40(17) . . ?
C18 C19 H20 119.8 . . ?
C14 C19 H20 119.8 . . ?
C12 N2 C5 109.78(13) . . ?
C12 N2 C13 119.65(13) . . ?
C5 N2 C13 123.90(13) . . ?
C1 O1 H1 104.5(15) . . ?
C2 O2 C9 113.12(11) . . ?
C7 O3 C6 116.66(12) . . ?
C12 O5 C4 107.86(12) . . ?

_diffrn_measured_fraction_theta_max 0.999
_diffrn_reflns_theta_full        25.17
_diffrn_measured_fraction_theta_full 0.999
_refine_diff_density_max         0.270
_refine_diff_density_min         -0.173
_refine_diff_density_rms         0.033
_database_code_depnum_ccdc_archive 'CCDC 945349'