Guanidinium dihydrogen phosphite
Harrison, William T. A.; Acta Crystallographica Section E 59 (2003) o769–o770; doi:10.1107/S1600536803009644

data_2202033
_publ_section_title
;
 Guanidinium dihydrogen phosphite
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o769
_journal_page_last               o770
_journal_paper_doi               10.1107/S1600536803009644
_journal_volume                  59
_journal_year                    2003
_chemical_formula_iupac          'C N3 H6 1+, H2 P O3 1-'
_chemical_formula_moiety         'C N3 H6 1+, H2 P O3 1-'
_chemical_formula_sum            'C H8 N3 O3 P'
_chemical_formula_weight         141.07
_chemical_name_systematic
;
Guanidinium dihydrogen phosphite
;
_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 and difmap (O-H species)'
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 100.631(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   4.5268(3)
_cell_length_b                   7.4711(5)
_cell_length_c                   9.1856(6)
_cell_measurement_reflns_used    2092
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      32.30
_cell_measurement_theta_min      2.26
_cell_volume                     305.33(4)
_computing_cell_refinement       'SAINT (Bruker, 1999)'
_computing_data_collection       'SMART (Bruker, 1999)'
_computing_data_reduction        SAINT
_computing_molecular_graphics
'ORTEP-3 (Farrugia, 1997) and ATOMS (Shape Software, 1999)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  SHELXL97
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker SMART1000 CCD'
_diffrn_measurement_method       \w
_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  0.0147
_diffrn_reflns_av_sigmaI/netI    0.0214
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            3144
_diffrn_reflns_theta_full        32.48
_diffrn_reflns_theta_max         32.48
_diffrn_reflns_theta_min         2.26
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.382
_exptl_absorpt_correction_T_max  0.944
_exptl_absorpt_correction_T_min  0.891
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 1999)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.534
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             148
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.275
_refine_diff_density_min         -0.231
_refine_ls_abs_structure_details 'Flack (1983), 1055 Friedel pairs'
_refine_ls_abs_structure_Flack   -0.03(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.994
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     73
_refine_ls_number_reflns         1836
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.994
_refine_ls_R_factor_all          0.0323
_refine_ls_R_factor_gt           0.0290
_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^)+(0.0506P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0737
_refine_ls_wR_factor_ref         0.0756
_reflns_number_gt                1691
_reflns_number_total             1836
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh6055.cif
_cod_data_source_block           I
_cod_original_cell_volume        305.33(3)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               2202033
_cod_database_fobs_code          2202033