Lithium and beryllium hypophosphites
Naumov, Dmitry Yu.; Naumova, Marina I.; Podberezskaya, Nina V.; Kuratieva, Natalia V.; Acta Crystallographica Section C 60 (2004) i73–i75; doi:10.1107/S0108270104013691

data_2014098
_publ_section_title
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 Lithium and beryllium hypophosphites
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_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              i73
_journal_page_last               i75
_journal_paper_doi               10.1107/S0108270104013691
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'Be (H2 P O2)2'
_chemical_formula_moiety         'Be + , 2(H2 O2 P) -'
_chemical_formula_structural     'Be (H2 P O2)2'
_chemical_formula_sum            'Be H4 O4 P2'
_chemical_formula_weight         138.98
_chemical_name_common            'beryllium bis(hypophosphite)'
_chemical_name_systematic        'beryllium bis[dihydrogenphosphate(I)]'
_space_group_IT_number           92
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4abw 2nw'
_symmetry_space_group_name_H-M   'P 41 21 2'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.0117(5)
_cell_length_b                   5.0117(5)
_cell_length_c                   20.051(3)
_cell_measurement_reflns_used    22
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      12.944
_cell_measurement_theta_min      9.975
_cell_volume                     503.62(10)
_computing_cell_refinement       CD4CA0
_computing_data_collection       'CD4CA0 (Enraf-Nonius, 1989)'
_computing_data_reduction        'CADDAT (Enraf-Nonius, 1989)'
_computing_molecular_graphics    'ORTEPIII (Burnett & Johnson, 1996)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_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 CAD-4'
_diffrn_measurement_method       2\q/\q
_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  0.0315
_diffrn_reflns_av_sigmaI/netI    0.0316
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            1372
_diffrn_reflns_theta_full        29.94
_diffrn_reflns_theta_max         29.94
_diffrn_reflns_theta_min         4.07
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.760
_exptl_absorpt_correction_T_max  0.796
_exptl_absorpt_correction_T_min  0.761
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   '(CADDAT; Enraf-Nonius, 1989)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.833
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             280
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.276
_refine_diff_density_min         -0.343
_refine_ls_abs_structure_details 'Flack (1983), with xx Friedel pairs'
_refine_ls_abs_structure_Flack   0.0(4)
_refine_ls_extinction_coef       0.018(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     43
_refine_ls_number_reflns         699
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0410
_refine_ls_R_factor_gt           0.0327
_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^)+(0.0592P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0923
_refine_ls_wR_factor_ref         0.0983
_reflns_number_gt                599
_reflns_number_total             699
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bc1045.cif
_cod_data_source_block           II
_cod_depositor_comments
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The following automatic conversions were performed:
'_geom_bond_publ_flag' value 'Yes' changed to 'yes' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (6 times).

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_geom_bond_publ_flag' value 'Yes' changed to 'yes' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (6
times).

'_geom_angle_publ_flag' value 'Yes' changed to 'yes'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (4
times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_database_code               2014098
_cod_database_fobs_code          2014098