Syntheses, Crystal Structures, Transport Properties and First-Principles Electronic Structure Study of the (tTTF)2X (X = Br, I) Low-Dimensional Antiferromagnets
Marc Fourmigué; Eric W. Reinheimer; Ali Assaf; Olivier Jeannin; Ali Saad; Pascale Auban-Senzier; Pere Alemany; Antonio Rodríguez-Fortea; Enric Canadell; Inorganic Chemistry 50 (2011) 4171–4181; doi:10.1021/ic2002964

data_4325014
_publ_section_title
;
 Syntheses, Crystal Structures, Transport Properties and First-Principles
 Electronic Structure Study of the (tTTF)2X (X = Br, I) Low-Dimensional
 Antiferromagnets
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4171
_journal_page_last               4181
_journal_paper_doi               10.1021/ic2002964
_journal_volume                  50
_journal_year                    2011
_chemical_formula_moiety         '2(C9 H8 S4), Br'
_chemical_formula_sum            'C18 H16 Br S8'
_chemical_formula_weight         568.70
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                73.415(3)
_cell_angle_beta                 83.968(2)
_cell_angle_gamma                72.264(3)
_cell_formula_units_Z            1
_cell_length_a                   6.3441(2)
_cell_length_b                   7.3344(3)
_cell_length_c                   12.5028(4)
_cell_measurement_reflns_used    1732
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      2.910
_cell_volume                     530.95(3)
_computing_cell_refinement
'Dirax/lsq (Duisenberg & Schreurs, 1989-2000)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction        'EvalCCD (Duisenberg & Schreurs 1990-2000)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1993)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  'horizonally mounted graphite crystal'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0232
_diffrn_reflns_av_sigmaI/netI    0.0241
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            7280
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.75
_exptl_absorpt_coefficient_mu    2.726
_exptl_absorpt_correction_T_max  0.761
_exptl_absorpt_correction_T_min  0.728
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
  [Sheldrick, G.M. (2002). SADABS Bruker AXS Inc., Madison, Wisconsin, USA]
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.779
_exptl_crystal_description       prism
_exptl_crystal_F_000             287
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.225
_refine_diff_density_min         -0.290
_refine_diff_density_rms         0.074
_refine_ls_extinction_coef       0.053(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.081
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     125
_refine_ls_number_reflns         2436
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.081
_refine_ls_R_factor_all          0.0324
_refine_ls_R_factor_gt           0.0239
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0242P)^2^+0.1206P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0521
_refine_ls_wR_factor_ref         0.0555
_reflns_number_gt                2098
_reflns_number_total             2436
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic2002964_si_001_2.cif
_cod_data_source_block           tTTF2Br
_cod_database_code               4325014