The type IV polymorph of KEu(PO~3~)~4~
Oudahmane, Abdelghani; Daoud, Mohamed; Tanouti, Boumediene; Avignant, Daniel; Zambon, Daniel; Acta Crystallographica Section E 65 (2009) i91–i92; doi:10.1107/S1600536809048788

data_2224485
_publ_section_title
;
 The type IV polymorph of KEu(PO~3~)~4~
;
_journal_coeditor_code           WM2282
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              i91
_journal_page_last               i92
_journal_paper_doi               10.1107/S1600536809048788
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'K Eu (P O3)4'
_chemical_formula_structural     'K Eu (P O3)4'
_chemical_formula_sum            'Eu K O12 P4'
_chemical_formula_weight         506.94
_chemical_name_common            'K Eu (P O3)4'
_chemical_name_systematic
;
potassium europium(III) polyphosphate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 106.0530(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.37230(10)
_cell_length_b                   8.97210(10)
_cell_length_c                   10.83200(10)
_cell_measurement_reflns_used    6203
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      40.59
_cell_measurement_theta_min      2.61
_cell_volume                     968.733(18)
_computing_cell_refinement       'SAINT (Bruker, 2008)'
_computing_data_collection       'APEX2 (Bruker, 2008)'
_computing_data_reduction        'SAINT (Bruker, 2008)'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 1999)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.000
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEXII CCD'
_diffrn_measurement_method       '\w and \f'
_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  0.0446
_diffrn_reflns_av_sigmaI/netI    0.0443
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            24299
_diffrn_reflns_theta_full        1.00
_diffrn_reflns_theta_max         40.59
_diffrn_reflns_theta_min         3.05
_exptl_absorpt_coefficient_mu    7.631
_exptl_absorpt_correction_T_max  0.5129
_exptl_absorpt_correction_T_min  0.4663
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    3.476
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'hexagonal prism '
_exptl_crystal_F_000             952
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.715
_refine_diff_density_min         -2.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     163
_refine_ls_number_reflns         6201
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0437
_refine_ls_R_factor_gt           0.0304
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0311P)^2^+1.1689P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0675
_refine_ls_wR_factor_ref         0.0719
_reflns_number_gt                5023
_reflns_number_total             6201
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            wm2282.cif
_cod_data_source_block           I
_cod_original_cell_volume        968.733(17)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2224485
_cod_database_fobs_code          2224485