Molecular crystals of 2-amino-1,3,4-thiadiazole with inorganic oxyacids ‒ crystal engineering, phase transformations and NLO properties
Matulková, I.; Cihelka, J.; Pojarová, M.; Fejfarová, K.; Dušek, M.; Císařová, I.; Vaněk, P.; Kroupa, J.; Němec, P.; Tesařová, N.; Němec, I.; CrystEngComm 16 (2014) 1763–; doi:10.1039/c3ce42306a

data_7214030
_publ_section_title
;
 Molecular crystals of 2-amino-1,3,4-thiadiazole with inorganic oxyacids
 -- crystal engineering, phase transformations and NLO properties
;
_journal_issue                   9
_journal_name_full               CrystEngComm
_journal_page_first              1763
_journal_paper_doi               10.1039/c3ce42306a
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         '2 (C2 H4 N3 S), O4 Se, O'
_chemical_formula_sum            'C4 H8 N6 O5 S2 Se'
_chemical_formula_weight         363.24
_chemical_melting_point          378
_chemical_name_common
'Bis(2-amino-1,3,4-thiadiazolium(1+) selenate monohydrate'
_chemical_name_systematic
;
?
;
_space_group_IT_number           7
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P -2yc'
_symmetry_space_group_name_H-M   'P 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2010-04-30 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 93.4720(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   5.53770(10)
_cell_length_b                   13.9715(2)
_cell_length_c                   7.67370(10)
_cell_measurement_reflns_used    2918
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      62.4561
_cell_measurement_theta_min      3.1621
_cell_volume                     592.624(16)
_computing_cell_refinement       'Crysalis RED (Oxford Diffraction, 2007)'
_computing_data_collection       'Crysalis CCD (Oxford Diffraction, 2007)'
_computing_data_reduction        'Crysalis RED (Oxford Diffraction, 2007)'
_computing_publication_material  'publCIF (MacMahon, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 10.3784
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Xcalibur, Atlas, Gemini ultra'
_diffrn_measurement_method
;
Rotation method data acquisition using \w scans
;
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'Enhance Ultra (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0479
_diffrn_reflns_av_sigmaI/netI    0.0293
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            2741
_diffrn_reflns_theta_full        62.47
_diffrn_reflns_theta_max         62.47
_diffrn_reflns_theta_min         3.16
_exptl_absorpt_coefficient_mu    7.885
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.24152
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.036
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.5914
_exptl_crystal_size_mid          0.4404
_exptl_crystal_size_min          0.1349
_refine_diff_density_max         0.524
_refine_diff_density_min         -1.247
_refine_diff_density_rms         0.145
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.07(3)
_refine_ls_extinction_coef       0.0757(17)
_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   1.129
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     141
_refine_ls_number_reflns         1274
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.198
_refine_ls_R_factor_all          0.0350
_refine_ls_R_factor_gt           0.0350
_refine_ls_shift/su_max          0.033
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0680P)^2^+0.0511P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0873
_refine_ls_wR_factor_ref         0.0873
_reflns_number_gt                1274
_reflns_number_total             1274
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce42306a.txt
_cod_data_source_block           2_athd_h2seo4
_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/RSC/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      Pc
_cod_database_code               7214030