Synthesis and Characterization of Four Ethylenediamine-Templated Iron Arsenates
S. Ekambaram; Slavi C. Sevov; Inorganic Chemistry 39 (2000) 2405–2410; doi:10.1021/ic991367b

data_4320985
_publ_section_title
;
 Synthesis and Characterization of Four Ethylenediamine-Templated Iron
 Arsenates
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              2405
_journal_page_last               2410
_journal_paper_doi               10.1021/ic991367b
_journal_volume                  39
_journal_year                    2000
_chemical_formula_sum            'C2 H16 As3 Fe N2 O13'
_chemical_formula_weight         556.78
_chemical_name_systematic
;
Compound1
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_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                 90.65(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   4.7620(10)
_cell_length_b                   16.086(3)
_cell_length_c                   8.698(2)
_cell_measurement_temperature    293(2)
_cell_volume                     666.2(2)
_computing_cell_refinement       CAD4_(Enraf-Nonius,_1977)
_computing_data_collection       CAD4_(Enraf-Nonius,_1977)
_computing_data_reduction        SDP_Package_(Enraf-Nonius,_1985)
_computing_molecular_graphics    SHELXTL-V5.0
_computing_publication_material  SHELXTL-V5.0
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Enraf-Nonius CAD4'
_diffrn_measurement_method       Omega-2Theta
_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  0.0358
_diffrn_reflns_av_sigmaI/netI    0.0459
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            3183
_diffrn_reflns_theta_full        24.97
_diffrn_reflns_theta_max         24.97
_diffrn_reflns_theta_min         2.34
_exptl_absorpt_coefficient_mu    8.599
_exptl_absorpt_correction_T_max  0.261
_exptl_absorpt_correction_T_min  0.225
_exptl_absorpt_correction_type   psi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.775
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       bar
_exptl_crystal_F_000             542
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.514
_refine_diff_density_min         -0.538
_refine_diff_density_rms         0.102
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.021(13)
_refine_ls_extinction_coef       0.0101(5)
_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   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     205
_refine_ls_number_reflns         2349
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0283
_refine_ls_R_factor_gt           0.0244
_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^)+(0.0213P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0533
_refine_ls_wR_factor_ref         0.0548
_reflns_number_gt                2209
_reflns_number_total             2349
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic991367b_1.cif
_cod_data_source_block           compound1
_cod_database_code               4320985