Berylloarsenates ‒ new frameworks, building units and an unusual zeotype
Littlefield, Benjamin T. R.; Welle, Mark T.; Chemical Communications (Cambridge, United Kingdom) 47 (2011) 4769–4771; doi:10.1039/c1cc00118c

data_7106245
_publ_section_title
;
 Berylloarsenates -- new frameworks, building units and an unusual zeotype
;
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_coden_ASTM              CHCOFS
_journal_page_first              4769
_journal_page_last               4771
_journal_paper_doi               10.1039/c1cc00118c
_journal_volume                  47
_journal_year                    2011
_chemical_formula_moiety         'As O4, 2(H2 O), H O, 2(Be)'
_chemical_formula_sum            'As Be2 H5 O7'
_chemical_formula_weight         209.98
_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_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                 105.881(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.4806(2)
_cell_length_b                   11.0971(4)
_cell_length_c                   8.4133(2)
_cell_measurement_reflns_used    6925
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     581.96(3)
_computing_cell_refinement
;
DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)
;
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
;
DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean '4096x4096pixels / 62x62mm'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type
;
Bruker-Nonius APEX II CCD camera on \k-goniostat
;
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0295
_diffrn_reflns_av_sigmaI/netI    0.0274
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            6693
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.12
_diffrn_standards_interval_count 4954
_diffrn_standards_number         1413
_exptl_absorpt_coefficient_mu    5.814
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    2.397
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             408.50
_exptl_crystal_size_max          0.02
_exptl_crystal_size_mid          0.01
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.362
_refine_diff_density_min         -0.463
_refine_diff_density_rms         0.095
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.835
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     111
_refine_ls_number_reflns         1339
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.835
_refine_ls_R_factor_all          0.0224
_refine_ls_R_factor_gt           0.0200
_refine_ls_shift/su_max          0.031
_refine_ls_shift/su_mean         0.005
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0231P)^2^+2.1223P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0486
_refine_ls_wR_factor_ref         0.0507
_reflns_number_gt                1251
_reflns_number_total             1339
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c1cc00118c.txt
_cod_data_source_block           BAF2021
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7106245