Mixed-Valence, Layered, Cation Radical Salts of the Ethane-Bridged Dimeric Tetrathiafulvalene [(EDT-TTF–CH~2^–^~)~2~^•+^][X^-^][THF]~0.5~, X^-^ = FeCl~4~^-^, GaCl~4~^-^
Mézière, Cécile; Fourmigué, Marc; Canadell, Enric; Clérac, Rodolphe; Bechgaard, Klaus; Auban-Senzier, Pascale; Chemistry of Materials 12 (2000) 2250–2256; doi:10.1021/cm0001511

data_4000021
_publ_section_title
;
 Mixed-Valence, Layered, Cation Radical Salts of the Ethane-Bridged Dimeric
 Tetrathiafulvalene [(EDT-TTF--CH~2^--^~)~2~^&#x2022;+^][X^-^][THF]~0.5~,
 X^-^ = FeCl~4~^-^, GaCl~4~^-^
;
_journal_coden_ASTM              CMATEX
_journal_issue                   8
_journal_name_full               'Chemistry of Materials'
_journal_page_first              2250
_journal_page_last               2256
_journal_paper_doi               10.1021/cm0001511
_journal_volume                  12
_journal_year                    2000
_chemical_formula_sum            'C18 H14 S12'
_chemical_formula_weight         615.01
_chemical_name_common            Bis(EDT)ethane
_chemical_name_systematic
;
1,2-bis(3',4'-(ethylendithio)-tetrathiafulvalen-3-yl)ethane
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.6493(14)
_cell_length_b                   9.5395(14)
_cell_length_c                   21.751(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      15.0
_cell_measurement_theta_min      4.6
_cell_volume                     2417.1(6)
_computing_cell_refinement       'CAD4 EXPRESS'
_computing_data_collection       'CAD4 EXPRESS'
_computing_data_reduction        'XCAD4 (Harms, 1993)'
_computing_molecular_graphics    'ORTEP [Johnson, 1976]'
_computing_publication_material  'SHELXL-93 [Sheldrick, 1993]'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       'Enraf-Nonius Mach3'
_diffrn_measurement_method       Omega-2theta-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1543
_diffrn_reflns_av_sigmaI/netI    0.5835
_diffrn_refln_scan_mode_backgd   mo
_diffrn_refln_scan_width         1.00
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       1
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            2947
_diffrn_reflns_theta_max         25.96
_diffrn_reflns_theta_min         1.87
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    1.092
_exptl_absorpt_correction_T_max  0.893
_exptl_absorpt_correction_T_min  0.809
_exptl_absorpt_correction_type   psi-scan
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.690
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       'thin plate'
_exptl_crystal_F_000             1256
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.465
_refine_diff_density_min         -0.506
_refine_diff_density_rms         0.113
_refine_ls_extinction_coef       ?
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   0.914
_refine_ls_goodness_of_fit_obs   1.157
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         2283
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.922
_refine_ls_restrained_S_obs      1.157
_refine_ls_R_factor_all          0.3571
_refine_ls_R_factor_obs          0.0546
_refine_ls_shift/esd_max         0.000
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0210P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1133
_refine_ls_wR_factor_obs         0.0693
_reflns_number_observed          643
_reflns_number_total             2284
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            cm0001511.cif
_cod_data_source_block           cp122b
_cod_depositor_comments
;
The following automatic conversions were performed:
'_diffrn_refln_scan_mode_backgd' value 'MO' changed to 'mo' according to
'/home/saulius/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 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0210P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0210P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               4000021