Syntheses, Structures, Physical Properties, and Electronic Properties of Some AMUQ3 Compounds (A = Alkali Metal, M = Cu or Ag, Q = S or Se)
Jiyong Yao; Daniel M. Wells; George H. Chan; Hui-Yi Zeng; Donald E. Ellis; Richard P. Van Duyne; James A. Ibers; Inorganic Chemistry 47 (2008) 6873–6879; doi:10.1021/ic800424t

data_4305441
_publ_contact_author_address
;
        Department of Chemistry
        Northwestern University
        2145 Sheridan Road
        Evanston, IL 60208-3113, USA
;
_publ_contact_author_email       ibers@chem.northwestern.edu
_publ_contact_author_fax         '+1 847 491 2976'
_publ_contact_author_name        'James A. Ibers'
_publ_contact_author_phone       '+1 847 491 5449'
_publ_section_title
;
Syntheses, Structures, Physical Properties, and Electronic Properties of
Some AMUQ3 Compounds (A = Alkali Metal, M = Cu or Ag, Q = S or Se)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              6873
_journal_page_last               6879
_journal_paper_doi               10.1021/ic800424t
_journal_volume                  47
_journal_year                    2008
_chemical_formula_sum            'Ag Rb Se3 U'
_chemical_formula_weight         668.25
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           63
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-C 2c 2'
_symmetry_space_group_name_H-M   'C m c m'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.2060(5)
_cell_length_b                   14.9188(17)
_cell_length_c                   10.8140(12)
_cell_measurement_temperature    153(2)
_cell_volume                     678.56(13)
_computing_cell_refinement       'SMART Version 5.054 (Bruker, 2000)'
_computing_data_collection       'SMART Version 5.054 (Bruker, 2000)'
_computing_data_reduction        'Saint-Plus Version 6.45a (Bruker, 2003)'
_computing_molecular_graphics    'CrystalMaker, 2005'
_computing_publication_material  'SHELXTL (Sheldrick, 2003)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 2003)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2003)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD'
_diffrn_measurement_method       '0.3\%\w scans'
_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  0.0364
_diffrn_reflns_av_sigmaI/netI    0.0217
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            4028
_diffrn_reflns_theta_full        28.64
_diffrn_reflns_theta_max         28.64
_diffrn_reflns_theta_min         2.73
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    49.805
_exptl_absorpt_correction_T_max  0.74209
_exptl_absorpt_correction_T_min  0.05891
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'face indexed'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    6.541
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1112
_exptl_crystal_size_max          0.266
_exptl_crystal_size_mid          0.036
_exptl_crystal_size_min          0.006
_refine_diff_density_max         4.374
_refine_diff_density_min         -3.082
_refine_diff_density_rms         0.632
_refine_ls_extinction_coef       0.00013(9)
_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   1.242
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     24
_refine_ls_number_reflns         511
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.242
_refine_ls_R_factor_all          0.0304
_refine_ls_R_factor_gt           0.0260
_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^)+(0.0400P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0632
_refine_ls_wR_factor_ref         0.0662
_reflns_number_gt                470
_reflns_number_total             511
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic800424t-file012_7.cif
_cod_data_source_block           RbAgUSe3
_cod_database_code               4305441