Mixed Cations and Structural Complexity in (Eu1-xCax)4In3Ge4 and (Eu1-xCax)3In2Ge3-The First Two Members of the Homologous Series A2[n+m]In2n+mGe2[n+m] (n,m= 1, 2, ...\ιnfty; A = Ca, Sr, Ba, Eu, or Yb)
Tae-Soo You; Paul H. Tobash; Svilen Bobev; Inorganic Chemistry 49 (2010) 1773–1783; doi:10.1021/ic902144h

data_4314839
_publ_section_title
;
 Mixed Cations and Structural Complexity in (Eu1-xCax)4In3Ge4 and
 (Eu1-xCax)3In2Ge3-The First Two Members of the Homologous Series
 A2[n+m]In2n+mGe2[n+m] (n,m= 1, 2, ...\\infty; A = Ca, Sr, Ba, Eu, or Yb)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              1773
_journal_page_last               1783
_journal_paper_doi               10.1021/ic902144h
_journal_volume                  49
_journal_year                    2010
_chemical_formula_moiety         'Ca2.77 Eu1.23 Ge4 In3'
_chemical_formula_sum            'Ca2.77 Eu1.23 Ge4 In3'
_chemical_formula_weight         932.75
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           12
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 107.306(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   16.874(10)
_cell_length_b                   4.496(3)
_cell_length_c                   7.473(4)
_cell_measurement_reflns_used    896
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      30.76
_cell_measurement_theta_min      2.53
_cell_volume                     541.3(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHEMXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.945
_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  0.0520
_diffrn_reflns_av_sigmaI/netI    0.0450
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            4098
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         30.76
_diffrn_reflns_theta_min         2.53
_exptl_absorpt_coefficient_mu    25.438
_exptl_absorpt_correction_T_max  0.0441
_exptl_absorpt_correction_T_min  0.0256
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            silver
_exptl_crystal_density_diffrn    5.719
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregualr
_exptl_crystal_F_000             815
_exptl_crystal_size_max          0.043
_exptl_crystal_size_mid          0.040
_exptl_crystal_size_min          0.038
_refine_diff_density_max         1.178
_refine_diff_density_min         -1.635
_refine_diff_density_rms         0.335
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_matrix_type           full
_refine_ls_number_parameters     37
_refine_ls_number_reflns         896
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.0474
_refine_ls_R_factor_gt           0.0311
_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^)+(0.0199P)^2^+2.4776P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0592
_refine_ls_wR_factor_ref         0.0639
_reflns_number_gt                709
_reflns_number_total             896
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic902144h_si_002_7.cif
_cod_data_source_block           Eu1.23Ca2.77In3Ge4
_cod_original_cell_volume        541.4(5)
_cod_database_code               4314839