Syntheses of bifunctional 2,3-diamino propionic acid-based chelators as small and strong tripod ligands for the labelling of biomolecules with (99m)Tc.
Liu, Yu; Oliveira, Bruno L.; Correia, João D G; Santos, Isabel C.; Santos, Isabel; Spingler, Bernhard; Alberto, Roger; Organic & biomolecular chemistry 8 (2010) 2829–2839; doi:10.1039/c002796k

data_7153345
_publ_section_title
;
 Syntheses of bifunctional 2,3-diamino propionic acid-based chelators as
 small and strong tripod ligands for the labelling of biomolecules with
 (99m)Tc.
;
_journal_issue                   12
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2829
_journal_page_last               2839
_journal_paper_doi               10.1039/c002796k
_journal_volume                  8
_journal_year                    2010
_chemical_formula_moiety         'C13 H23 N3 O4, H2 O'
_chemical_formula_sum            'C13 H25 N3 O5'
_chemical_formula_weight         303.36
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.1904(8)
_cell_length_b                   17.6150(12)
_cell_length_c                   9.4373(5)
_cell_measurement_reflns_used    810
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      21.35
_cell_measurement_theta_min      3.16
_cell_volume                     1694.0(2)
_computing_cell_refinement       'Bruker SMART, (Bruker, 2004)'
_computing_data_collection       'Bruker SMART, (Bruker, 2004)'
_computing_data_reduction        'Bruker SAINT, (Bruker, 2004)'
_computing_molecular_graphics    ORTEP3(Farrugia,1997)
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare, 1999)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.961
_diffrn_measured_fraction_theta_max 0.961
_diffrn_measurement_device_type  'Bruker-AXS APEX- CCD area-detector'
_diffrn_measurement_method       '\f and \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  0.0545
_diffrn_reflns_av_sigmaI/netI    0.0862
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            4537
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         3.16
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.9945
_exptl_absorpt_correction_T_min  0.9775
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2004)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.189
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.206
_refine_diff_density_min         -0.208
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.2(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.985
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     215
_refine_ls_number_reflns         2321
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.985
_refine_ls_R_factor_all          0.0870
_refine_ls_R_factor_gt           0.0552
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0351P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0931
_refine_ls_wR_factor_ref         0.1011
_reflns_number_gt                1647
_reflns_number_total             2321
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c002796k.txt
_cod_data_source_block           bl46
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      'Pca2(1) '
_cod_database_code               7153345