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_4509943
_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_moiety         'C8 H2 Br4 O4, 2(H2 O)'
_chemical_formula_sum            'C8 H6 Br4 O6'
_chemical_formula_weight         517.77
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_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                 97.177(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.8277(6)
_cell_length_b                   14.727(2)
_cell_length_c                   16.5226(19)
_cell_measurement_reflns_used    2358
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.71
_cell_measurement_theta_min      1.86
_cell_volume                     1406.9(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_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  0.1584
_diffrn_reflns_av_sigmaI/netI    0.2881
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            5368
_diffrn_reflns_theta_full        24.71
_diffrn_reflns_theta_max         24.71
_diffrn_reflns_theta_min         1.86
_exptl_absorpt_coefficient_mu    11.455
_exptl_absorpt_correction_T_max  0.253
_exptl_absorpt_correction_T_min  0.146
_exptl_absorpt_correction_type   empirical
_exptl_crystal_density_diffrn    2.444
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             968
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.201
_refine_diff_density_min         -1.063
_refine_diff_density_rms         0.265
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.810
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     158
_refine_ls_number_reflns         2358
_refine_ls_number_restraints     43
_refine_ls_restrained_S_all      0.803
_refine_ls_R_factor_all          0.1878
_refine_ls_R_factor_gt           0.0772
_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^)+(0.0605P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1562
_refine_ls_wR_factor_ref         0.1835
_reflns_number_gt                894
_reflns_number_total             2358
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg4014009_si_003.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4509943