# 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_pzttf
_database_code_depnum_ccdc_archive 'CCDC 1404846'

_audit_update_record             
;
2015-06-04 deposited with the CCDC.
2015-07-29 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-97
_chemical_name_systematic        
; 
2-(5H-[1,3]dithiolo[4,5-c]pyrrol-2-ylidene)-[1,3]dithiolo[4,5-b]pyrazine 
;
_chemical_name_common            Pyrazino-tetrathiafulvalene-pyrrole
_chemical_melting_point          ?
_chemical_formula_moiety         'C10 H5 N3 S4'
_chemical_formula_sum            'C10 H5 N3 S4'
_chemical_formula_weight         295.41

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'
S S 0.1246 0.1234 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_symmetry_cell_setting           Monoclinic
_symmetry_space_group_name_H-M   P21/n

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

_cell_length_a                   8.1660(4)
_cell_length_b                   9.3650(5)
_cell_length_c                   15.1600(9)
_cell_angle_alpha                90.00
_cell_angle_beta                 102.045(2)
_cell_angle_gamma                90.00
_cell_volume                     1133.83(11)
_cell_formula_units_Z            4
_cell_measurement_temperature    153(2)
_cell_measurement_reflns_used    2763
_cell_measurement_theta_min      1
_cell_measurement_theta_max      27.5

_exptl_crystal_description       Prism
_exptl_crystal_colour            Organge
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.01
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.731
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             600
_exptl_absorpt_coefficient_mu    0.813
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_correction_T_min  0.87977
_exptl_absorpt_correction_T_max  0.98020
_exptl_absorpt_process_details   
;
XPrep, SHELXTL/PC, Siemens Analytical 
;
_exptl_special_details           
; 
 ? 
;

_diffrn_ambient_temperature      153(2)
_diffrn_radiation_wavelength     0.71070
_diffrn_radiation_type           MoK\a
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_monochromator  graphite
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       ω-scans
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            4691
_diffrn_reflns_av_R_equivalents  0.0693
_diffrn_reflns_av_sigmaI/netI    0.0990
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_theta_min         2.63
_diffrn_reflns_theta_max         27.50
_reflns_number_total             2598
_reflns_number_gt                1588
_reflns_threshold_expression     >2sigma(I)

_computing_data_collection       'Collect Software, Nonius B. V. 1998'
_computing_cell_refinement       'Collect Software, Nonius B. V. 1998'
_computing_data_reduction        
;
SIR97 - Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C., 
Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R.
;
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_molecular_graphics    'XP SHELXTL/PC, Siemens Analytical'
_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)+(0.0380P)²+1.2259P] 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     ?
_refine_ls_extinction_coef       ?
_refine_ls_number_reflns         2598
_refine_ls_number_parameters     154
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1265
_refine_ls_R_factor_gt           0.0638
_refine_ls_wR_factor_ref         0.1257
_refine_ls_wR_factor_gt          0.1086
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_restrained_S_all      1.041
_refine_ls_shift/su_max          0.001
_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
S1 S 0.31977(13) -0.18526(12) 0.38133(7) 0.0407(3) Uani 1 1 d . . .
S2 S 0.47250(13) 0.01852(12) 0.27090(7) 0.0392(3) Uani 1 1 d . . .
S3 S 0.37887(12) 0.28034(11) 0.38634(7) 0.0372(3) Uani 1 1 d . . .
S4 S 0.21505(13) 0.07424(12) 0.49404(7) 0.0390(3) Uani 1 1 d . . .
N1 N 0.4552(4) -0.3988(4) 0.3024(2) 0.0412(9) Uani 1 1 d . . .
N2 N 0.5934(4) -0.2061(4) 0.1949(2) 0.0398(9) Uani 1 1 d . . .
N3 N 0.1770(4) 0.4721(4) 0.5700(2) 0.0433(9) Uani 1 1 d . . .
H3 H 0.1490 0.5431 0.6019 0.052 Uiso 1 1 calc R . .
C1 C 0.3702(5) -0.0067(4) 0.3606(3) 0.0335(10) Uani 1 1 d . . .
C2 C 0.5082(4) -0.1633(4) 0.2563(3) 0.0343(10) Uani 1 1 d . . .
C3 C 0.6079(5) -0.3486(5) 0.1889(3) 0.0440(11) Uani 1 1 d . . .
H3A H 0.6662 -0.3862 0.1460 0.053 Uiso 1 1 calc R . .
C4 C 0.5421(5) -0.4425(5) 0.2422(3) 0.0479(12) Uani 1 1 d . . .
H4 H 0.5593 -0.5420 0.2358 0.057 Uiso 1 1 calc R . .
C5 C 0.4386(4) -0.2596(5) 0.3091(3) 0.0349(10) Uani 1 1 d . . .
C6 C 0.3292(4) 0.1022(4) 0.4080(3) 0.0317(9) Uani 1 1 d . . .
C7 C 0.2849(5) 0.3530(5) 0.4704(3) 0.0362(10) Uani 1 1 d . . .
C8 C 0.2677(5) 0.4868(5) 0.5015(3) 0.0419(11) Uani 1 1 d . . .
H8 H 0.3086 0.5730 0.4811 0.050 Uiso 1 1 calc R . .
C9 C 0.1380(5) 0.3311(5) 0.5803(3) 0.0394(10) Uani 1 1 d . . .
H9 H 0.0764 0.2935 0.6216 0.047 Uiso 1 1 calc R . .
C10 C 0.2051(4) 0.2558(4) 0.5196(3) 0.0339(9) 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
S1 0.0446(6) 0.0386(7) 0.0419(7) 0.0025(5) 0.0158(5) -0.0025(5)
S2 0.0425(6) 0.0389(6) 0.0404(6) -0.0002(5) 0.0182(5) -0.0020(5)
S3 0.0389(6) 0.0382(6) 0.0359(6) 0.0000(5) 0.0112(5) -0.0041(5)
S4 0.0426(6) 0.0419(7) 0.0353(6) 0.0019(5) 0.0149(5) -0.0017(5)
N1 0.0343(19) 0.040(2) 0.046(2) 0.0008(18) 0.0007(17) 0.0042(17)
N2 0.0303(17) 0.052(2) 0.037(2) -0.0071(18) 0.0051(16) 0.0003(17)
N3 0.047(2) 0.047(2) 0.035(2) -0.0058(18) 0.0076(17) 0.0070(18)
C1 0.030(2) 0.038(2) 0.033(2) 0.0049(19) 0.0075(18) -0.0031(18)
C2 0.029(2) 0.037(2) 0.035(2) -0.003(2) 0.0026(19) 0.0016(18)
C3 0.031(2) 0.051(3) 0.046(3) -0.009(2) 0.000(2) 0.008(2)
C4 0.039(2) 0.041(3) 0.057(3) -0.011(2) -0.006(2) 0.009(2)
C5 0.030(2) 0.041(3) 0.032(2) 0.000(2) 0.0019(19) 0.0030(19)
C6 0.028(2) 0.038(2) 0.028(2) 0.0013(19) 0.0039(17) -0.0052(18)
C7 0.031(2) 0.049(3) 0.029(2) 0.000(2) 0.0052(18) -0.001(2)
C8 0.038(2) 0.041(3) 0.042(3) 0.003(2) -0.002(2) -0.005(2)
C9 0.034(2) 0.054(3) 0.030(2) 0.006(2) 0.0064(19) 0.004(2)
C10 0.030(2) 0.041(2) 0.030(2) -0.002(2) 0.0040(18) -0.0029(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
S1 C5 1.752(4) . ?
S1 C1 1.766(4) . ?
S2 C2 1.750(4) . ?
S2 C1 1.754(4) . ?
S3 C7 1.756(4) . ?
S3 C6 1.764(4) . ?
S4 C10 1.749(4) . ?
S4 C6 1.774(4) . ?
N1 C5 1.317(5) . ?
N1 C4 1.332(5) . ?
N2 C2 1.334(5) . ?
N2 C3 1.345(5) . ?
N3 C9 1.375(5) . ?
N3 C8 1.402(5) . ?
N3 H3 0.8800 . ?
C1 C6 1.330(5) . ?
C2 C5 1.403(6) . ?
C3 C4 1.377(6) . ?
C3 H3A 0.9500 . ?
C4 H4 0.9500 . ?
C7 C8 1.357(6) . ?
C7 C10 1.418(5) . ?
C8 H8 0.9500 . ?
C9 C10 1.362(5) . ?
C9 H9 0.9500 . ?

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 S1 C1 94.88(19) . . ?
C2 S2 C1 94.94(19) . . ?
C7 S3 C6 94.54(19) . . ?
C10 S4 C6 94.30(19) . . ?
C5 N1 C4 115.8(4) . . ?
C2 N2 C3 114.3(4) . . ?
C9 N3 C8 110.4(4) . . ?
C9 N3 H3 124.8 . . ?
C8 N3 H3 124.8 . . ?
C6 C1 S2 122.0(3) . . ?
C6 C1 S1 122.4(3) . . ?
S2 C1 S1 115.6(2) . . ?
N2 C2 C5 122.5(4) . . ?
N2 C2 S2 120.4(3) . . ?
C5 C2 S2 117.1(3) . . ?
N2 C3 C4 122.9(4) . . ?
N2 C3 H3A 118.5 . . ?
C4 C3 H3A 118.5 . . ?
N1 C4 C3 122.3(4) . . ?
N1 C4 H4 118.8 . . ?
C3 C4 H4 118.8 . . ?
N1 C5 C2 122.1(4) . . ?
N1 C5 S1 121.4(3) . . ?
C2 C5 S1 116.4(3) . . ?
C1 C6 S3 122.1(3) . . ?
C1 C6 S4 121.0(3) . . ?
S3 C6 S4 116.9(2) . . ?
C8 C7 C10 108.6(4) . . ?
C8 C7 S3 134.7(3) . . ?
C10 C7 S3 116.8(3) . . ?
C7 C8 N3 106.0(4) . . ?
C7 C8 H8 127.0 . . ?
N3 C8 H8 127.0 . . ?
C10 C9 N3 106.6(4) . . ?
C10 C9 H9 126.7 . . ?
N3 C9 H9 126.7 . . ?
C9 C10 C7 108.4(4) . . ?
C9 C10 S4 134.1(3) . . ?
C7 C10 S4 117.4(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
C2 S2 C1 C6 172.0(3) . . . . ?
C2 S2 C1 S1 -10.0(2) . . . . ?
C5 S1 C1 C6 -171.3(3) . . . . ?
C5 S1 C1 S2 10.6(2) . . . . ?
C3 N2 C2 C5 -0.6(5) . . . . ?
C3 N2 C2 S2 -178.3(3) . . . . ?
C1 S2 C2 N2 -177.2(3) . . . . ?
C1 S2 C2 C5 5.0(3) . . . . ?
C2 N2 C3 C4 -0.7(6) . . . . ?
C5 N1 C4 C3 -1.2(6) . . . . ?
N2 C3 C4 N1 1.7(6) . . . . ?
C4 N1 C5 C2 -0.1(6) . . . . ?
C4 N1 C5 S1 177.0(3) . . . . ?
N2 C2 C5 N1 1.0(6) . . . . ?
S2 C2 C5 N1 178.8(3) . . . . ?
N2 C2 C5 S1 -176.2(3) . . . . ?
S2 C2 C5 S1 1.6(4) . . . . ?
C1 S1 C5 N1 175.6(3) . . . . ?
C1 S1 C5 C2 -7.2(3) . . . . ?
S2 C1 C6 S3 -1.6(5) . . . . ?
S1 C1 C6 S3 -179.6(2) . . . . ?
S2 C1 C6 S4 176.3(2) . . . . ?
S1 C1 C6 S4 -1.6(5) . . . . ?
C7 S3 C6 C1 179.1(3) . . . . ?
C7 S3 C6 S4 1.1(2) . . . . ?
C10 S4 C6 C1 -178.2(3) . . . . ?
C10 S4 C6 S3 -0.1(2) . . . . ?
C6 S3 C7 C8 178.7(4) . . . . ?
C6 S3 C7 C10 -1.9(3) . . . . ?
C10 C7 C8 N3 0.0(4) . . . . ?
S3 C7 C8 N3 179.5(3) . . . . ?
C9 N3 C8 C7 -0.5(5) . . . . ?
C8 N3 C9 C10 0.7(4) . . . . ?
N3 C9 C10 C7 -0.7(4) . . . . ?
N3 C9 C10 S4 177.7(3) . . . . ?
C8 C7 C10 C9 0.4(4) . . . . ?
S3 C7 C10 C9 -179.1(3) . . . . ?
C8 C7 C10 S4 -178.3(3) . . . . ?
S3 C7 C10 S4 2.2(4) . . . . ?
C6 S4 C10 C9 -179.5(4) . . . . ?
C6 S4 C10 C7 -1.2(3) . . . . ?

_diffrn_measured_fraction_theta_max 0.993
_diffrn_reflns_theta_full        27.50
_diffrn_measured_fraction_theta_full 0.993
_refine_diff_density_max         0.394
_refine_diff_density_min         -0.354
_refine_diff_density_rms         0.083

_exptl_crystal_recrystallization_method 
'Re-crystallisation from solvent: Dichloromethane'
