Lanthanide(iii) complexes of aminoethyl-DO3A as PARACEST contrast agents based on decoordination of the weakly bound amino group.
Krchová, Tereza; Kotek, Jan; Jirák, Daniel; Havlíčková, Jana; Císařová, Ivana; Hermann, Petr; Dalton transactions (Cambridge, England : 2003) 42 (2013) 15735–15747; doi:10.1039/c3dt52031e

data_7023775
_publ_section_title
;
 Lanthanide(iii) complexes of aminoethyl-DO3A as PARACEST contrast agents
 based on decoordination of the weakly bound amino group.
;
_journal_issue                   44
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              15735
_journal_page_last               15747
_journal_paper_doi               10.1039/c3dt52031e
_journal_volume                  42
_journal_year                    2013
_chemical_compound_source        'synthesized by the authors'
_chemical_formula_moiety         'C18 H35 N5 O6, 3.5(H2 O)'
_chemical_formula_sum            'C18 H42 N5 O9.5'
_chemical_formula_weight         480.57
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.5670(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.4798(2)
_cell_length_b                   15.9561(4)
_cell_length_c                   20.0951(6)
_cell_measurement_reflns_used    9877
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.51
_cell_measurement_theta_min      2.39
_cell_volume                     2397.42(11)
_computing_cell_refinement       'SAINT V8.27B (Bruker AXS Inc., 2012)'
_computing_data_collection       'Bruker Instrument Service v2012.12.0.3'
_computing_data_reduction        'SAINT V8.27B (Bruker AXS Inc., 2012)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0259
_diffrn_reflns_av_sigmaI/netI    0.0193
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            30750
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.63
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.91
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2012/1 (Bruker AXS Inc.)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.331
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1044
_exptl_crystal_size_max          0.53
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.361
_refine_diff_density_min         -0.202
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     348
_refine_ls_number_reflns         5503
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0455
_refine_ls_R_factor_gt           0.0370
_refine_ls_shift/su_max          0.010
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0439P)^2^+1.0015P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0902
_refine_ls_wR_factor_ref         0.0952
_reflns_number_gt                4686
_reflns_number_total             5503
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt52031e.txt
_cod_data_source_block           me2do3aae
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_original_formula_sum        'C18 H42 N5 O9.50'
_cod_database_code               7023775