Crystal Growth, Structural Properties, and Photophysical Characterization of Ln4Na2K2M2O13 (M= Nb, Ta; Ln= Nd, Sm, Eu, Gd)
Thomas-C. Jagau; Irina P. Roof; Mark D. Smith; Hans-Conrad zur Loye; Inorganic Chemistry 48 (2009) 8220–8226; doi:10.1021/ic9006873

data_4303014
_publ_contact_author_address
;
Department of Chemistry and Biochemistry
University of South Carolina
Columbia, South Carolina 29208
USA
;
_publ_contact_author_email       zurloye@sc.edu
_publ_contact_author_fax         '803 777 8508'
_publ_contact_author_name        'Professor Hans-Conrad zur Loye'
_publ_contact_author_phone       '803 777 6916'
_publ_section_title
;
Crystal Growth, Structural Properties, and Photophysical Characterization
of Ln4Na2K2M2O13 (M= Nb, Ta; Ln= Nd, Sm, Eu, Gd)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              8220
_journal_page_last               8226
_journal_paper_doi               10.1021/ic9006873
_journal_volume                  48
_journal_year                    2009
_chemical_formula_moiety         'Eu4 K2 Na2 Nb2 O13'
_chemical_formula_sum            'Eu4 K2 Na2 Nb2 O13'
_chemical_formula_weight         1125.84
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 116.495(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   24.093(4)
_cell_length_b                   5.6581(11)
_cell_length_c                   11.198(2)
_cell_measurement_reflns_used    1757
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      32.196
_cell_measurement_theta_min      3.640
_cell_volume                     1366.2(4)
_computing_cell_refinement       'SAINT-Plus Version 6.45 (Bruker, 2001)'
_computing_data_collection       'SMART Version 5.625 (Bruker, 2001)'
_computing_data_reduction        'SAINT-Plus Version 6.45'
_computing_molecular_graphics    various
_computing_publication_material  'SHELXTL Version 6.14 (Bruker, 2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       '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  0.0704
_diffrn_reflns_av_sigmaI/netI    0.0558
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -38
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            4109
_diffrn_reflns_theta_full        35.25
_diffrn_reflns_theta_max         35.25
_diffrn_reflns_theta_min         1.89
_exptl_absorpt_coefficient_mu    20.441
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.3261
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'TWINABS (Bruker, 2001)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    5.474
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1992
_exptl_crystal_size_max          0.07
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.02
_refine_diff_density_max         3.684
_refine_diff_density_min         -2.249
_refine_diff_density_rms         0.477
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_matrix_type           full
_refine_ls_number_parameters     106
_refine_ls_number_reflns         4109
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0617
_refine_ls_R_factor_gt           0.0426
_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^)+(0.0356P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0815
_refine_ls_wR_factor_ref         0.0869
_reflns_number_gt                3134
_reflns_number_total             4109
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic9006873_si_001_4.cif
_cod_data_source_block           nbeu
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4303014