Hydrous salts of 1-aminoethylidenediphosphonic acid and piperazidine: temperature induced reversible structural transformation in humid environment
Yuan, Liangjie; Tian, Di; Chen, Shuo-ping; Li, Lang; RSC Adv.  (2016) –; doi:10.1039/C5RA22428D

data_7223928
_publ_section_title
;
 Hydrous salts of 1-aminoethylidenediphosphonic acid and piperazidine:
 temperature induced reversible structural transformation in humid
 environment
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C5RA22428D
_journal_year                    2016
_chemical_formula_sum            'C4 H18 N2 O8 P2'
_chemical_formula_weight         284.14
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2014-05-14 deposited with the CCDC.
2016-01-06 downloaded from the CCDC.
;
_cell_angle_alpha                115.505(4)
_cell_angle_beta                 94.461(4)
_cell_angle_gamma                92.251(4)
_cell_formula_units_Z            2
_cell_length_a                   5.7389(14)
_cell_length_b                   9.985(2)
_cell_length_c                   11.457(3)
_cell_measurement_reflns_used    2394
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      28.44
_cell_measurement_theta_min      2.27
_cell_volume                     588.8(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0164
_diffrn_reflns_av_sigmaI/netI    0.0277
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            4261
_diffrn_reflns_theta_full        28.00
_diffrn_reflns_theta_max         28.00
_diffrn_reflns_theta_min         1.98
_exptl_absorpt_coefficient_mu    0.400
_exptl_absorpt_correction_T_max  0.9536
_exptl_absorpt_correction_T_min  0.9102
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   DADABS
_exptl_crystal_density_diffrn    1.603
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             300
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.378
_refine_diff_density_min         -0.349
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     165
_refine_ls_number_reflns         2834
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0371
_refine_ls_R_factor_gt           0.0328
_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^)+(0.0335P)^2^+0.4003P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0821
_refine_ls_wR_factor_ref         0.0841
_reflns_number_gt                2550
_reflns_number_total             2834
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ra22428d2.cif
_cod_data_source_block           130922xj_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7223928