Investigating metal size effects in the Ln/As/Se/amine (Ln = lanthanide excluding Pm, amine = en, dien, en+trien) systems: solvothermal syntheses and characterizations of lanthanide selenidoarsenates.
Wang, Jiao; Pan, Yingli; Chen, Jiangfang; Gu, Jiansheng; Zhang, Yong; Jia, Dingxian; Dalton transactions (Cambridge, England : 2003) 39 (2010) 7066–7072; doi:10.1039/c0dt00040j

data_7025891
_publ_section_title
;
 Investigating metal size effects in the Ln/As/Se/amine (Ln = lanthanide
 excluding Pm, amine = en, dien, en+trien) systems: solvothermal syntheses
 and characterizations of lanthanide selenidoarsenates.
;
_journal_issue                   30
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7066
_journal_page_last               7072
_journal_paper_doi               10.1039/c0dt00040j
_journal_volume                  39
_journal_year                    2010
_chemical_formula_moiety         'C8 H26 As N6 Pr Se4'
_chemical_formula_sum            'C8 H26 As N6 Pr Se4'
_chemical_formula_weight         738.02
_chemical_name_systematic
;
?
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      61
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_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                90.00
_cell_formula_units_Z            8
_cell_length_a                   8.8169(13)
_cell_length_b                   16.489(3)
_cell_length_c                   26.719(4)
_cell_measurement_reflns_used    11570
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      3.03
_cell_volume                     3884.5(11)
_computing_cell_refinement       CrystalClear
_computing_data_collection       CrystalClear
_computing_data_reduction        CrystalStructure
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_detector_area_resol_mean 14.63
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku Saturn'
_diffrn_measurement_method       \w
_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  0.1140
_diffrn_reflns_av_sigmaI/netI    0.0988
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            31064
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    11.695
_exptl_absorpt_correction_T_max  0.1829
_exptl_absorpt_correction_T_min  0.0892
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            Red
_exptl_crystal_density_diffrn    2.524
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             2752
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.831
_refine_diff_density_min         -1.242
_refine_diff_density_rms         0.265
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.211
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     188
_refine_ls_number_reflns         3424
_refine_ls_number_restraints     8
_refine_ls_restrained_S_all      1.210
_refine_ls_R_factor_all          0.0768
_refine_ls_R_factor_gt           0.0651
_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^)+(0.0958P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1603
_refine_ls_wR_factor_ref         0.1746
_reflns_number_gt                2803
_reflns_number_total             3424
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0dt00040j.txt
_cod_data_source_block           complex_2c
_cod_original_cell_volume        3884.4(10)
_cod_database_code               7025891