Experimental and theoretical studies into the structural perturbations between neutral, oxidised and reduced forms of 1,4-dithiinoquinoxaline derivatives
Skabara, Peter J.; Berridge, Rory; Prescott, Karen; Goldenberg, Leonid M.; Ortí, Enrique; Viruela, Rafael; Pou-Amérigo, Rosendo; Batsanov, Andrei S.; Howard, Judith A. K.; Coles, Simon J.; Hursthouse, Michael B.; Journal of Materials Chemistry 10 (2000) 2448–; doi:10.1039/b003910l

data_7203993
_publ_section_title
;
 Experimental and theoretical studies into the structural perturbations
 between neutral, oxidised and reduced forms of 1,4-dithiinoquinoxaline
 derivatives
;
_journal_issue                   11
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              2448
_journal_paper_doi               10.1039/b003910l
_journal_volume                  10
_journal_year                    2000
_chemical_formula_sum            'C12 H10 N2 S4'
_chemical_formula_weight         310.46
_chemical_melting_point          427.6(5)
_chemical_name_systematic
; 
 5,6-bis(methylsulfanyl)[1,4]dithiino[2,3-b]quinoxaline  
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.5292(19)
_cell_length_b                   13.975(3)
_cell_length_c                   10.241(2)
_cell_measurement_reflns_used    5060
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.07
_cell_measurement_theta_min      2.47
_cell_volume                     1363.8(5)
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.885
_diffrn_measured_fraction_theta_max 0.885
_diffrn_measurement_device_type  'Nonius FAST TV detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1244
_diffrn_reflns_av_sigmaI/netI    0.0687
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            5060
_diffrn_reflns_theta_full        25.07
_diffrn_reflns_theta_max         25.07
_diffrn_reflns_theta_min         2.47
_exptl_absorpt_coefficient_mu    0.678
_exptl_absorpt_correction_T_max  0.7732
_exptl_absorpt_correction_T_min  0.6483
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.512
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             640
_exptl_crystal_size_max          0.70
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.288
_refine_diff_density_min         -0.384
_refine_diff_density_rms         0.090
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.796
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     83
_refine_ls_number_reflns         1121
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.796
_refine_ls_R_factor_all          0.0518
_refine_ls_R_factor_gt           0.0443
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1085
_refine_ls_wR_factor_ref         0.1126
_reflns_number_gt                939
_reflns_number_total             1121
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b003910l.txt
_cod_data_source_block           16
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/adriana/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1555 2011-01-17 13:19:09Z saulius 

The following automatic conversions were performed:

'_chemical_melting_point' value '154-155 deg.C' was changed to
'427.6(5)' - it was converted from degrees Celsius(C) to Kelvins(K),
the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 
;
_cod_original_sg_symbol_H-M      Pnma
_cod_database_code               7203993