Tetrabromoterepthalic Acid in Designing Co-crystals and Salts: Modification of Optical Properties and Schottky Barrier Effect
Dey, Sanjoy Kumar; Saha, Rajat; Biswas, Susobhan; Layek, Animesh; Middya, Somnath; Steele, Ian M.; Fleck, Michel; Ray, Partha Pratim; Kumar, Sanjay; Crystal Growth & Design 14 (2014) 207–; doi:10.1021/cg4014009

data_4509945
_publ_section_title
;
 Tetrabromoterepthalic Acid in Designing Co-crystals and Salts:
 Modification of Optical Properties and Schottky Barrier Effect
;
_journal_issue                   1
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              207
_journal_paper_doi               10.1021/cg4014009
_journal_volume                  14
_journal_year                    2014
_chemical_formula_sum            'C18 H10 Br4 I2 N2 O4'
_chemical_formula_weight         891.72
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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                96.117(4)
_cell_angle_beta                 90.172(4)
_cell_angle_gamma                106.548(4)
_cell_formula_units_Z            1
_cell_length_a                   6.8225(5)
_cell_length_b                   8.9985(6)
_cell_length_c                   10.1541(7)
_cell_measurement_reflns_used    3565
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      30.71
_cell_measurement_theta_min      2.02
_cell_volume                     593.80(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.964
_diffrn_measured_fraction_theta_max 0.965
_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  0.1072
_diffrn_reflns_av_sigmaI/netI    0.2373
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            10691
_diffrn_reflns_theta_full        30.71
_diffrn_reflns_theta_max         30.71
_diffrn_reflns_theta_min         2.02
_exptl_absorpt_coefficient_mu    9.404
_exptl_absorpt_correction_T_max  0.3982
_exptl_absorpt_correction_T_min  0.2681
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Sadabs (Sheldrick, 1996)'
_exptl_crystal_density_diffrn    2.494
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             410
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.184
_refine_diff_density_min         -1.113
_refine_diff_density_rms         0.189
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.921
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     127
_refine_ls_number_reflns         3565
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      0.922
_refine_ls_R_factor_all          0.2500
_refine_ls_R_factor_gt           0.0690
_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^)+(0.0683P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1319
_refine_ls_wR_factor_ref         0.1804
_reflns_number_gt                1190
_reflns_number_total             3565
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg4014009_si_007.cif
_cod_data_source_block           6
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'EMPIRICAL'
changed to 'empirical' according to
/usr/data/users/saulius/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_database_code               4509945