New Layered Materials: Syntheses, Structures, and Optical and Magnetic Properties of CsGdZnSe3, CsZrCuSe3, CsUCuSe3, and BaGdCuSe3
Fu Qiang Huang; Kwasi Mitchell; James A. Ibers; Inorganic Chemistry 40 (2001) 5123–5126; doi:10.1021/ic0104353

data_4320318
_publ_section_title
;
 New Layered Materials: Syntheses, Structures, and Optical and Magnetic
 Properties of CsGdZnSe3, CsZrCuSe3, CsUCuSe3, and BaGdCuSe3
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5123
_journal_page_last               5126
_journal_paper_doi               10.1021/ic0104353
_journal_volume                  40
_journal_year                    2001
_chemical_formula_sum            'Cs Cu Se3 U'
_chemical_formula_weight         671.36
_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   geom
_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                   4.1443(7)
_cell_length_b                   15.786(3)
_cell_length_c                   10.7188(18)
_cell_measurement_temperature    153(2)
_cell_volume                     701.2(2)
_computing_cell_refinement       'SMART version 5.054 (Bruker, 2000)'
_computing_data_collection       'SMART version 5.054 (Bruker, 2000)'
_computing_data_reduction        'SAINT-Plus version 6.02A (Bruker, 2000)'
_computing_molecular_graphics    'SHELXTL-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXTL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker Smart 1000 CCD'
_diffrn_measurement_method       \w
_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  0.0734
_diffrn_reflns_av_sigmaI/netI    0.0332
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            1509
_diffrn_reflns_theta_full        23.28
_diffrn_reflns_theta_max         23.28
_diffrn_reflns_theta_min         2.58
_diffrn_standards_decay_%        <2
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    46.654
_exptl_absorpt_correction_T_max  0.627
_exptl_absorpt_correction_T_min  0.050
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'face indexed'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    6.359
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1112
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.090
_exptl_crystal_size_min          0.010
_refine_diff_density_max         2.367
_refine_diff_density_min         -1.827
_refine_diff_density_rms         0.478
_refine_ls_extinction_coef       0.00009(12)
_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   1.313
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     24
_refine_ls_number_reflns         310
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.313
_refine_ls_R_factor_all          0.0289
_refine_ls_R_factor_gt           0.0284
_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
   [1.00000+0.00000exp(0.00(sin\q/\l)^2^)]/
     [\s^2^(Fo^2^)+0.0000+0.0000*P+(0.0400P)^2^+0.0000sin\q/\l]
   where P = 1.00000Fo^2^ + 0.00000Fc^2^
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0713
_refine_ls_wR_factor_ref         0.0717
_reflns_number_gt                301
_reflns_number_total             310
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0104353_3.cif
_cod_data_source_block           csucu
_cod_original_cell_volume        701.3(2)
_cod_database_code               4320318