Eight-Coordinated Arsenic in the Zintl Phases RbCd4As3 and RbZn4As3: Synthesis and Structural Characterization
Hua He; Chauntae Tyson; Svilen Bobev; Inorganic Chemistry 50 (2011) 8375–8383; doi:10.1021/ic2009418

data_4326070
_publ_section_title
;
 Eight-Coordinated Arsenic in the Zintl Phases RbCd4As3 and RbZn4As3:
 Synthesis and Structural Characterization
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              8375
_journal_page_last               8383
_journal_paper_doi               10.1021/ic2009418
_journal_volume                  50
_journal_year                    2011
_chemical_formula_moiety         'P3 Zn4, K'
_chemical_formula_sum            'K P3 Zn4'
_chemical_formula_weight         393.49
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           166
_symmetry_cell_setting           hexagonal
_symmetry_space_group_name_Hall  '-R 3 2"'
_symmetry_space_group_name_H-M   'R -3 m :H'
_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                120.00
_cell_formula_units_Z            3
_cell_length_a                   4.0454(5)
_cell_length_b                   4.0454(5)
_cell_length_c                   34.184(6)
_cell_measurement_reflns_used    198
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      28.29
_cell_measurement_theta_min      1.79
_cell_volume                     484.48(12)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0315
_diffrn_reflns_av_sigmaI/netI    0.0293
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       42
_diffrn_reflns_limit_l_min       -44
_diffrn_reflns_number            1359
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.79
_exptl_absorpt_coefficient_mu    15.926
_exptl_absorpt_correction_T_max  0.620
_exptl_absorpt_correction_T_min  0.400
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS (Sheldrick, 2003)
;
_exptl_crystal_colour            gold
_exptl_crystal_density_diffrn    4.046
_exptl_crystal_description       bar
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.06
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.643
_refine_diff_density_min         -0.546
_refine_diff_density_rms         0.152
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.096
_refine_ls_matrix_type           full
_refine_ls_number_parameters     14
_refine_ls_number_reflns         198
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.096
_refine_ls_R_factor_all          0.0265
_refine_ls_R_factor_gt           0.0210
_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^)+(0.0155P)^2^+2.3558P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0472
_refine_ls_wR_factor_ref         0.0489
_reflns_number_gt                172
_reflns_number_total             198
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic2009418_si_002_KZn4P3.cif
_cod_data_source_block           KZn4P3
_cod_original_cell_volume        484.49(12)
_cod_original_sg_symbol_H-M      'R -3 m'
_cod_database_code               4326070