<i>cis</i>- and <i>trans</i>-3,5-Diethoxy-1-oxa-3,5-diphosphorinane-3,5-dione
Jones, Peter G.; Weinkauf, Andreas; Acta Crystallographica Section C 54 (1998) 1453–1456; doi:10.1107/S0108270198006155

data_2007703
_publ_section_title
;
 <i>cis</i>- and
 <i>trans</i>-3,5-Diethoxy-1-oxa-3,5-diphosphorinane-3,5-dione
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1453
_journal_page_last               1456
_journal_paper_doi               10.1107/S0108270198006155
_journal_volume                  54
_journal_year                    1998
_chemical_formula_moiety         'C7 H16 O5 P2'
_chemical_formula_sum            'C7 H16 O5 P2'
_chemical_formula_weight         242.14
_chemical_name_systematic
;
 cis-3,5-Diethoxy-3,5-dioxo-1-oxa-3,5-diphosphorinane
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_audit_creation_method           SHELXL93
_cell_angle_alpha                90.00
_cell_angle_beta                 94.82(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
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_cell_length_b                   10.954(5)
_cell_length_c                   8.547(4)
_cell_measurement_reflns_used    50
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      12.5
_cell_measurement_theta_min      10.0
_cell_volume                     2342.4(18)
_computing_cell_refinement       'P3 Software'
_computing_data_collection
'P3 Software (Nicolet Instrument Corporation, 1987)'
_computing_data_reduction        'XDISK in P3 Software'
_computing_molecular_graphics    'XP (Siemens, 1994)'
_computing_publication_material  SHELXL93
_computing_structure_refinement  'SHELXL93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       'Nicolet R3'
_diffrn_measurement_method       '2\q/\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_av_sigmaI/netI    0.027
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       0
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_diffrn_reflns_limit_l_min       -10
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_diffrn_reflns_theta_min         3.07
_diffrn_standards_decay_%        2
_diffrn_standards_interval_count 147
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.366
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.373
_exptl_crystal_density_meas      ?
_exptl_crystal_description       tablet
_exptl_crystal_F_000             1024
_exptl_crystal_size_max          0.70
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.31
_refine_diff_density_min         -0.25
_refine_ls_extinction_method     none
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_refine_ls_goodness_of_fit_obs   1.052
_refine_ls_hydrogen_treatment    constr
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_refine_ls_number_reflns         2078
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_restrained_S_obs      1.052
_refine_ls_R_factor_all          0.047
_refine_ls_R_factor_obs          0.036
_refine_ls_shift/esd_max         0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0570P)^2^+1.8624P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.105
_refine_ls_wR_factor_obs         0.096
_reflns_number_observed          1719
_reflns_number_total             2078
_reflns_observed_criterion       I>2sigma(I)
_cod_data_source_file            bm1250.cif
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:
'_geom_bond_publ_flag' value 'Y' changed to 'y' 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:

'_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 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.0570P)^2^+1.8624P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w =
1/[\s^2^(Fo^2^)+(0.0570P)^2^+1.8624P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        2342.6(18)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2007703