# Electronic Supplementary Material (ESI) for RSC Advances.
# 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_sqtrim
_database_code_depnum_ccdc_archive 'CCDC 890861'
_audit_update_record             
;
2012-07-07 deposited with the CCDC.
2015-09-24 downloaded from the CCDC.
;
#TrackingRef 'sqtrim.cif'


_audit_creation_method           SHELXL-97
_chemical_name_systematic        
;
?
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C18 H20 Cl2 N2 O4'
_chemical_formula_weight         399.26

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'
Cl Cl 0.1484 0.1585 '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           ?
_symmetry_space_group_name_H-M   ?

loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, -z'

_cell_length_a                   7.3283(4)
_cell_length_b                   9.6448(6)
_cell_length_c                   13.9704(8)
_cell_angle_alpha                83.013(5)
_cell_angle_beta                 81.025(5)
_cell_angle_gamma                79.065(5)
_cell_volume                     953.31(10)
_cell_formula_units_Z            2
_cell_measurement_temperature    293(2)
_cell_measurement_reflns_used    ?
_cell_measurement_theta_min      ?
_cell_measurement_theta_max      ?

_exptl_crystal_description       ?
_exptl_crystal_colour            ?
_exptl_crystal_size_max          ?
_exptl_crystal_size_mid          ?
_exptl_crystal_size_min          ?
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.391
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             416
_exptl_absorpt_coefficient_mu    0.366
_exptl_absorpt_correction_type   ?
_exptl_absorpt_correction_T_min  ?
_exptl_absorpt_correction_T_max  ?
_exptl_absorpt_process_details   ?

_exptl_special_details           
;
?
;

_diffrn_ambient_temperature      293(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  ?
_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            12963
_diffrn_reflns_av_R_equivalents  0.0275
_diffrn_reflns_av_sigmaI/netI    0.0231
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_theta_min         2.86
_diffrn_reflns_theta_max         25.99
_reflns_number_total             3732
_reflns_number_gt                3185
_reflns_threshold_expression     >2σ(I)

_computing_data_collection       ?
_computing_cell_refinement       ?
_computing_data_reduction        ?
_computing_structure_solution    ?
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_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 > 2σ(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)+(0.0628P)²+0.6409P] 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     SHELXL
_refine_ls_extinction_coef       0.002(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4^
_refine_ls_number_reflns         3732
_refine_ls_number_parameters     316
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0644
_refine_ls_R_factor_gt           0.0554
_refine_ls_wR_factor_ref         0.1592
_refine_ls_wR_factor_gt          0.1532
_refine_ls_goodness_of_fit_ref   1.174
_refine_ls_restrained_S_all      1.174
_refine_ls_shift/su_max          0.384
_refine_ls_shift/su_mean         0.027

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
Cl1 Cl 0.50636(13) 0.93971(11) 0.72407(5) 0.0687(3) Uani 1 1 d . . .
Cl2 Cl 0.28670(18) 0.43928(9) 0.90601(6) 0.0723(3) Uani 1 1 d . . .
O1 O -0.3572(3) 0.6220(3) 1.43082(15) 0.0586(6) Uani 1 1 d . . .
O2 O -0.2324(3) 0.7314(2) 1.56813(14) 0.0542(6) Uani 1 1 d . . .
O3 O 0.0869(3) 0.8383(2) 1.53209(15) 0.0572(6) Uani 1 1 d . . .
O4 O 0.1369(5) 0.5104(3) 1.1220(2) 0.0875(10) Uani 1 1 d . . .
N1 N 0.1913(3) 1.1665(2) 1.02937(17) 0.0448(6) Uani 1 1 d . . .
N2 N 0.1222(3) 0.7852(3) 1.18717(16) 0.0412(6) Uani 1 1 d . . .
C1 C 0.1040(4) 1.1628(3) 1.1212(2) 0.0470(7) Uani 1 1 d . . .
C2 C 0.0791(4) 1.0393(3) 1.1757(2) 0.0423(6) Uani 1 1 d . . .
C3 C 0.1447(3) 0.9081(3) 1.13640(18) 0.0350(5) Uani 1 1 d . . .
C4 C 0.3086(4) 0.7896(3) 0.9882(2) 0.0460(7) Uani 1 1 d . . .
C5 C 0.3908(4) 0.7985(4) 0.8940(2) 0.0510(7) Uani 1 1 d . . .
C6 C 0.4049(4) 0.9323(3) 0.84487(19) 0.0457(7) Uani 1 1 d . . .
C7 C 0.3439(4) 1.0528(3) 0.88855(19) 0.0426(6) Uani 1 1 d . . .
C8 C 0.2571(3) 1.0438(3) 0.98566(18) 0.0370(6) Uani 1 1 d . . .
C9 C 0.2361(3) 0.9122(3) 1.03726(18) 0.0353(6) Uani 1 1 d . . .
C10 C 0.0356(4) 0.7688(3) 1.28665(18) 0.0380(6) Uani 1 1 d . . .
C11 C -0.1208(4) 0.7048(3) 1.30644(19) 0.0379(6) Uani 1 1 d . . .
C12 C -0.2049(4) 0.6869(3) 1.40183(19) 0.0407(6) Uani 1 1 d . . .
C13 C -0.1362(4) 0.7371(3) 1.47609(18) 0.0414(6) Uani 1 1 d . . .
C14 C 0.0266(4) 0.7969(3) 1.45450(19) 0.0434(6) Uani 1 1 d . . .
C15 C 0.1125(4) 0.8128(3) 1.3588(2) 0.0434(6) Uani 1 1 d . . .
C16 C -0.4188(7) 0.5518(6) 1.3614(3) 0.0734(11) Uani 1 1 d . . .
C17 C -0.1544(7) 0.6212(5) 1.6347(3) 0.0663(10) Uani 1 1 d . . .
C18 C 0.2632(6) 0.8867(5) 1.5148(3) 0.0700(11) Uani 1 1 d . . .
H2 H 0.019(4) 1.039(3) 1.244(2) 0.045(8) Uiso 1 1 d . . .
H4 H 0.310(5) 0.700(4) 1.025(3) 0.063(10) Uiso 1 1 d . . .
H4A H 0.189(7) 0.489(5) 1.056(4) 0.111(16) Uiso 1 1 d . . .
H4B H 0.300(3) 0.509(2) 1.1289(17) 0.019(5) Uiso 1 1 d . . .
H7 H 0.359(4) 1.140(4) 0.857(2) 0.049(8) Uiso 1 1 d . . .
H11 H -0.170(4) 0.678(3) 1.261(2) 0.043(8) Uiso 1 1 d . . .
H15 H 0.219(5) 0.855(3) 1.346(2) 0.050(8) Uiso 1 1 d . . .
H2A H 0.145(5) 0.716(4) 1.161(3) 0.057(10) Uiso 1 1 d . . .
H1A H 0.064(5) 1.253(4) 1.148(2) 0.058(9) Uiso 1 1 d . . .
H5 H 0.435(5) 0.712(4) 0.860(3) 0.070(11) Uiso 1 1 d . . .
H12A H 0.143(9) 0.458(6) 0.893(4) 0.15(2) Uiso 1 1 d . . .
H16A H -0.462(6) 0.617(5) 1.311(4) 0.093(15) Uiso 1 1 d . . .
H16B H -0.320(6) 0.489(4) 1.329(3) 0.080(13) Uiso 1 1 d . . .
H16C H -0.511(6) 0.499(5) 1.395(3) 0.088(13) Uiso 1 1 d . . .
H17A H -0.035(7) 0.636(5) 1.646(3) 0.095(15) Uiso 1 1 d . . .
H17B H -0.230(6) 0.620(4) 1.691(3) 0.079(12) Uiso 1 1 d . . .
H17C H -0.134(7) 0.521(6) 1.611(3) 0.108(16) Uiso 1 1 d . . .
H18A H 0.273(5) 0.918(4) 1.577(3) 0.076(11) Uiso 1 1 d . . .
H18B H 0.354(5) 0.820(4) 1.496(3) 0.056(10) Uiso 1 1 d . . .
H18C H 0.255(6) 0.979(5) 1.471(3) 0.087(14) Uiso 1 1 d . . .


_geom_special_details            
;
All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell s.u.'s are taken
into account individually in the estimation of s.u.'s in distances, angles
and torsion angles; correlations between s.u.'s in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell s.u.'s is used for estimating s.u.'s 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
Cl1 C6 1.734(3) . ?
Cl2 H12A 1.08(6) . ?
O1 C12 1.365(3) . ?
O1 C16 1.419(5) . ?
O2 C13 1.367(3) . ?
O2 C17 1.419(4) . ?
O3 C14 1.361(3) . ?
O3 C18 1.431(5) . ?
O4 H4A 0.97(5) . ?
O4 H4B 1.21(2) . ?
N1 C1 1.341(4) . ?
N1 C8 1.369(3) . ?
N2 C3 1.330(3) . ?
N2 C10 1.438(3) . ?
N2 H2A 0.78(4) . ?
C1 C2 1.360(4) . ?
C1 H1A 0.96(4) . ?
C2 C3 1.410(4) . ?
C2 H2 0.99(3) . ?
C3 C9 1.441(3) . ?
C4 C5 1.360(4) . ?
C4 C9 1.412(4) . ?
C4 H4 0.95(4) . ?
C5 C6 1.400(4) . ?
C5 H5 0.99(4) . ?
C6 C7 1.347(4) . ?
C7 C8 1.406(4) . ?
C7 H7 0.92(3) . ?
C8 C9 1.404(4) . ?
C10 C15 1.374(4) . ?
C10 C11 1.378(4) . ?
C11 C12 1.383(4) . ?
C11 H11 0.87(3) . ?
C12 C13 1.394(4) . ?
C13 C14 1.397(4) . ?
C14 C15 1.389(4) . ?
C15 H15 0.93(3) . ?
C16 H16A 0.94(5) . ?
C16 H16B 0.94(4) . ?
C16 H16C 0.95(5) . ?
C17 H17A 0.96(5) . ?
C17 H17B 0.89(4) . ?
C17 H17C 1.04(5) . ?
C18 H18A 0.97(4) . ?
C18 H18B 0.87(4) . ?
C18 H18C 1.01(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
C12 O1 C16 118.1(2) . . ?
C13 O2 C17 115.2(3) . . ?
C14 O3 C18 117.0(3) . . ?
H4A O4 H4B 82(3) . . ?
C1 N1 C8 120.6(2) . . ?
C3 N2 C10 125.3(2) . . ?
C3 N2 H2A 119(3) . . ?
C10 N2 H2A 115(3) . . ?
N1 C1 C2 122.5(3) . . ?
N1 C1 H1A 116(2) . . ?
C2 C1 H1A 121(2) . . ?
C1 C2 C3 120.4(3) . . ?
C1 C2 H2 120.8(17) . . ?
C3 C2 H2 118.7(17) . . ?
N2 C3 C2 122.2(2) . . ?
N2 C3 C9 120.7(2) . . ?
C2 C3 C9 117.0(2) . . ?
C5 C4 C9 121.5(3) . . ?
C5 C4 H4 120(2) . . ?
C9 C4 H4 118(2) . . ?
C4 C5 C6 119.1(3) . . ?
C4 C5 H5 120(2) . . ?
C6 C5 H5 121(2) . . ?
C7 C6 C5 122.2(3) . . ?
C7 C6 Cl1 119.9(2) . . ?
C5 C6 Cl1 117.8(2) . . ?
C6 C7 C8 118.7(3) . . ?
C6 C7 H7 122(2) . . ?
C8 C7 H7 119(2) . . ?
N1 C8 C9 120.2(2) . . ?
N1 C8 C7 118.7(2) . . ?
C9 C8 C7 121.2(3) . . ?
C8 C9 C4 117.3(2) . . ?
C8 C9 C3 119.2(2) . . ?
C4 C9 C3 123.4(2) . . ?
C15 C10 C11 122.1(2) . . ?
C15 C10 N2 119.9(2) . . ?
C11 C10 N2 118.1(2) . . ?
C10 C11 C12 118.9(3) . . ?
C10 C11 H11 122(2) . . ?
C12 C11 H11 119(2) . . ?
O1 C12 C11 124.3(3) . . ?
O1 C12 C13 115.3(2) . . ?
C11 C12 C13 120.4(3) . . ?
O2 C13 C12 119.5(3) . . ?
O2 C13 C14 121.1(3) . . ?
C12 C13 C14 119.4(2) . . ?
O3 C14 C15 124.8(3) . . ?
O3 C14 C13 115.3(2) . . ?
C15 C14 C13 119.9(3) . . ?
C10 C15 C14 119.1(3) . . ?
C10 C15 H15 122.7(19) . . ?
C14 C15 H15 118.1(19) . . ?
O1 C16 H16A 111(3) . . ?
O1 C16 H16B 112(3) . . ?
H16A C16 H16B 104(4) . . ?
O1 C16 H16C 108(3) . . ?
H16A C16 H16C 113(4) . . ?
H16B C16 H16C 109(4) . . ?
O2 C17 H17A 110(3) . . ?
O2 C17 H17B 110(3) . . ?
H17A C17 H17B 108(4) . . ?
O2 C17 H17C 114(3) . . ?
H17A C17 H17C 107(4) . . ?
H17B C17 H17C 108(4) . . ?
O3 C18 H18A 103(2) . . ?
O3 C18 H18B 111(2) . . ?
H18A C18 H18B 113(3) . . ?
O3 C18 H18C 111(2) . . ?
H18A C18 H18C 102(3) . . ?
H18B C18 H18C 115(4) . . ?

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
C8 N1 C1 C2 1.1(4) . . . . ?
N1 C1 C2 C3 -0.3(5) . . . . ?
C10 N2 C3 C2 -1.9(4) . . . . ?
C10 N2 C3 C9 179.1(2) . . . . ?
C1 C2 C3 N2 -179.6(3) . . . . ?
C1 C2 C3 C9 -0.5(4) . . . . ?
C9 C4 C5 C6 0.5(5) . . . . ?
C4 C5 C6 C7 1.7(5) . . . . ?
C4 C5 C6 Cl1 -178.8(2) . . . . ?
C5 C6 C7 C8 -2.3(4) . . . . ?
Cl1 C6 C7 C8 178.1(2) . . . . ?
C1 N1 C8 C9 -0.9(4) . . . . ?
C1 N1 C8 C7 178.5(3) . . . . ?
C6 C7 C8 N1 -178.6(2) . . . . ?
C6 C7 C8 C9 0.9(4) . . . . ?
N1 C8 C9 C4 -179.4(2) . . . . ?
C7 C8 C9 C4 1.1(4) . . . . ?
N1 C8 C9 C3 0.0(4) . . . . ?
C7 C8 C9 C3 -179.4(2) . . . . ?
C5 C4 C9 C8 -1.8(4) . . . . ?
C5 C4 C9 C3 178.8(3) . . . . ?
N2 C3 C9 C8 179.8(2) . . . . ?
C2 C3 C9 C8 0.7(4) . . . . ?
N2 C3 C9 C4 -0.8(4) . . . . ?
C2 C3 C9 C4 -179.9(3) . . . . ?
C3 N2 C10 C15 -61.4(4) . . . . ?
C3 N2 C10 C11 120.5(3) . . . . ?
C15 C10 C11 C12 1.3(4) . . . . ?
N2 C10 C11 C12 179.4(2) . . . . ?
C16 O1 C12 C11 8.7(5) . . . . ?
C16 O1 C12 C13 -171.7(3) . . . . ?
C10 C11 C12 O1 -178.3(2) . . . . ?
C10 C11 C12 C13 2.2(4) . . . . ?
C17 O2 C13 C12 103.3(3) . . . . ?
C17 O2 C13 C14 -78.8(4) . . . . ?
O1 C12 C13 O2 -6.2(4) . . . . ?
C11 C12 C13 O2 173.4(2) . . . . ?
O1 C12 C13 C14 175.9(2) . . . . ?
C11 C12 C13 C14 -4.5(4) . . . . ?
C18 O3 C14 C15 -7.4(4) . . . . ?
C18 O3 C14 C13 173.8(3) . . . . ?
O2 C13 C14 O3 4.5(4) . . . . ?
C12 C13 C14 O3 -177.7(2) . . . . ?
O2 C13 C14 C15 -174.3(2) . . . . ?
C12 C13 C14 C15 3.5(4) . . . . ?
C11 C10 C15 C14 -2.3(4) . . . . ?
N2 C10 C15 C14 179.6(2) . . . . ?
O3 C14 C15 C10 -178.8(3) . . . . ?
C13 C14 C15 C10 -0.1(4) . . . . ?

_diffrn_measured_fraction_theta_max 0.998
_diffrn_reflns_theta_full        25.99
_diffrn_measured_fraction_theta_full 0.998
_refine_diff_density_max         0.530
_refine_diff_density_min         -0.297
_refine_diff_density_rms         0.047
