Strong second harmonic generation from the tantalum thioarsenates A3Ta2AsS11 (A = K and Rb).
Bera, Tarun K.; Jang, Joon I.; Ketterson, John B.; Kanatzidis, Mercouri G.; Journal of the American Chemical Society 131 (2009) 75–77; doi:10.1021/ja807928d

data_4101693
_publ_section_title
;
 Strong second harmonic generation from the tantalum thioarsenates
 A3Ta2AsS11 (A = K and Rb).
;
_journal_issue                   1
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              75
_journal_page_last               77
_journal_paper_doi               10.1021/ja807928d
_journal_volume                  131
_journal_year                    2009
_chemical_formula_sum            'As K3 S11 Ta2'
_chemical_formula_weight         906.78
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 100.120(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.2571(7)
_cell_length_b                   12.4154(7)
_cell_length_c                   9.4505(5)
_cell_measurement_reflns_used    7683
_cell_measurement_temperature    100
_cell_measurement_theta_max      29.16
_cell_measurement_theta_min      3.95
_cell_volume                     1646.78(15)
_computing_cell_refinement       X-area
_computing_data_collection       X-area
_computing_data_reduction        X-area
_computing_molecular_graphics    Diamond
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  IPDS2
_diffrn_measurement_method       'profile data from \w scan'
_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  0.0438
_diffrn_reflns_av_sigmaI/netI    0.0320
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            7683
_diffrn_reflns_theta_full        29.16
_diffrn_reflns_theta_max         29.16
_diffrn_reflns_theta_min         3.95
_exptl_absorpt_coefficient_mu    17.397
_exptl_absorpt_correction_T_max  0.4334
_exptl_absorpt_correction_T_min  0.1326
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   XRED32
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    3.657
_exptl_crystal_density_meas      3.657
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1648
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.07
_refine_diff_density_max         1.513
_refine_diff_density_min         -1.446
_refine_diff_density_rms         0.233
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.005(5)
_refine_ls_extinction_coef       0.00144(7)
_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   1.034
_refine_ls_matrix_type           full
_refine_ls_number_parameters     155
_refine_ls_number_reflns         4151
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0223
_refine_ls_R_factor_gt           0.0215
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0413P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0546
_refine_ls_wR_factor_ref         0.0548
_reflns_number_gt                4050
_reflns_number_total             4151
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja807928d_si_001.cif
_cod_data_source_block           K3Ta2AsS11
_cod_original_sg_symbol_H-M      Cc
_cod_database_code               4101693