Methylene-bis[(aminomethyl)phosphinic acids]: synthesis, acid-base and coordination properties.
David, Tomáš; Procházková, Soňa; Havlíčková, Jana; Kotek, Jan; Kubíček, Vojtěch; Hermann, Petr; Lukeš, Ivan; Dalton transactions (Cambridge, England : 2003) 42 (2013) 2414–2422; doi:10.1039/c2dt32045b

data_7020821
_publ_section_title
;
 Methylene-bis[(aminomethyl)phosphinic acids]: synthesis, acid-base and
 coordination properties.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2414
_journal_page_last               2422
_journal_paper_doi               10.1039/c2dt32045b
_journal_volume                  42
_journal_year                    2013
_chemical_compound_source        'synthesized by the authors'
_chemical_formula_moiety
'C18 H26 Cu2 N4 O10 P4, C O3, 4(C H6 N3), 10(H2 O)'
_chemical_formula_sum            'C23 H70 Cu2 N16 O23 P4'
_chemical_formula_weight         1189.91
_space_group_IT_number           1
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                69.8750(10)
_cell_angle_beta                 76.6460(10)
_cell_angle_gamma                65.3910(10)
_cell_formula_units_Z            2
_cell_length_a                   14.1333(4)
_cell_length_b                   14.2073(4)
_cell_length_c                   14.4339(4)
_cell_measurement_reflns_used    9729
_cell_measurement_temperature    150(1)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.7
_cell_volume                     2461.05(12)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(1)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0201
_diffrn_reflns_av_sigmaI/netI    0.0229
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            68119
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.64
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.086
_exptl_absorpt_correction_T_max  0.8807
_exptl_absorpt_correction_T_min  0.5193
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            'brownish green'
_exptl_crystal_density_diffrn    1.606
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1244
_exptl_crystal_size_max          0.69
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.428
_refine_diff_density_min         -0.338
_refine_diff_density_rms         0.052
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1226
_refine_ls_number_reflns         22429
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0262
_refine_ls_R_factor_gt           0.0237
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0321P)^2^+1.1003P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0604
_refine_ls_wR_factor_ref         0.0618
_reflns_number_gt                21349
_reflns_number_total             22429
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt32045b.txt
_cod_data_source_block           cubisampinph
_cod_database_code               7020821