Syntheses, crystal structures and physical properties of three new chalcogenides: NaGaGe3Se8, K3Ga3Ge7S20, and K3Ga3Ge7Se20.
Li, Xiaoshuang; Li, Chao; Gong, Pifu; Lin, Zheshuai; Yao, Jiyong; Wu, Yicheng; Dalton transactions (Cambridge, England : 2003) 45 (2015) 532–538; doi:10.1039/c5dt03682h

data_7037155
_publ_section_title
;
 Syntheses, crystal structures and physical properties of three new
 chalcogenides: NaGaGe3Se8, K3Ga3Ge7S20, and K3Ga3Ge7Se20.
;
_journal_issue                   2
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              532
_journal_page_last               538
_journal_paper_doi               10.1039/c5dt03682h
_journal_volume                  45
_journal_year                    2015
_chemical_formula_sum            'Ga3 Ge7 K3 Se20'
_chemical_formula_weight         2413.79
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-09-07 deposited with the CCDC.
2015-11-03 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.433(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.0520(4)
_cell_length_b                   39.033(2)
_cell_length_c                   6.9488(4)
_cell_measurement_reflns_used    2293
_cell_measurement_temperature    153.1500
_cell_measurement_theta_max      27.7420
_cell_measurement_theta_min      3.8900
_cell_volume                     1912.68(18)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153.1500
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Xcalibur, Sapphire3, Gemini ultra'
_diffrn_measurement_method       dtprofit.ref
_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  0.0887
_diffrn_reflns_av_sigmaI/netI    0.0852
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       48
_diffrn_reflns_limit_k_min       -47
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            13485
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         3.56
_exptl_absorpt_coefficient_mu    26.854
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.49894
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'face indexed'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    4.191
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             2108
_refine_diff_density_max         1.418
_refine_diff_density_min         -1.559
_refine_diff_density_rms         0.321
_refine_ls_extinction_coef       0.00142(11)
_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   1.033
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     152
_refine_ls_number_reflns         3915
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0708
_refine_ls_R_factor_gt           0.0502
_refine_ls_shift/su_max          0.001
_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          0.1048
_refine_ls_wR_factor_ref         0.1160
_reflns_number_gt                3031
_reflns_number_total             3915
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5dt03682h2.cif
_cod_data_source_block           a
_cod_depositor_comments
'Adding full bibliography for 7037153--7037155.cif.'
_cod_original_cell_volume        1912.67(19)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7037155