Supramolecular structure of ammonium polyoxoarsenates(iii)
Guńka, Piotr A.; Dranka, Maciej; Zachara, Janusz; CrystEngComm 13 (2011) 6163–; doi:10.1039/c1ce05158j

data_7215355
_publ_section_title
;
 Supramolecular structure of ammonium polyoxoarsenates(iii)
;
_journal_issue                   20
_journal_name_full               CrystEngComm
_journal_page_first              6163
_journal_paper_doi               10.1039/c1ce05158j
_journal_volume                  13
_journal_year                    2011
_chemical_formula_moiety         'C2 H10 N2, 2(As O2)'
_chemical_formula_sum            'C2 H10 As2 N2 O4'
_chemical_formula_weight         275.96
_chemical_name_systematic
;
ethylenediamonnium metaarsenate(III)
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 132.957(14)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.9898(15)
_cell_length_b                   4.64836(12)
_cell_length_c                   12.8789(11)
_cell_measurement_reflns_used    6725
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.33
_cell_measurement_theta_min      4.32
_cell_volume                     788.2(2)
_computing_cell_refinement       'CrysAlisPro (Oxford Diffraction Ltd. 2009)'
_computing_data_collection       'CrysAlisPro (Oxford Diffraction Ltd. 2009)'
_computing_data_reduction        'CrysAlisPro (Oxford Diffraction Ltd. 2009)'
_computing_molecular_graphics    'Diamond v3.2 (Brandenburg, 2010)'
_computing_publication_material
;
SHELXL-97 (Sheldrick, 1997)
PLATON, A.L.Spek (2010), Utrecht Univ., Utrecht, The Netherlands
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.3347
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.955
_diffrn_measurement_device       '\k-geometry diffractometer'
_diffrn_measurement_device_type  'Xcalibur, Atlas, Gemini ultra'
_diffrn_measurement_method       'area detector \w 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  0.0927
_diffrn_reflns_av_sigmaI/netI    0.0651
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            12522
_diffrn_reflns_theta_full        25.24
_diffrn_reflns_theta_max         29.40
_diffrn_reflns_theta_min         4.32
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    8.458
_exptl_absorpt_correction_T_max  0.681
_exptl_absorpt_correction_T_min  0.204
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro (Oxford Diffraction Ltd., 2010)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
;
_exptl_crystal_colour            colourles
_exptl_crystal_density_diffrn    2.326
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             536
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.015
_refine_diff_density_min         -0.844
_refine_diff_density_rms         0.165
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     44
_refine_ls_number_reflns         1043
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0359
_refine_ls_R_factor_gt           0.0289
_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^)+(0.0446P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0704
_refine_ls_wR_factor_ref         0.0720
_reflns_number_gt                877
_reflns_number_total             1043
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c1ce05158j.txt
_cod_data_source_block           eda_aoptsh
_cod_original_sg_symbol_Hall     -C_2yc
_cod_database_code               7215355