Pseudopeptidic ligands: exploring the self-assembly of isophthaloylbisglycine (H2IBG) and divalent metal ions.
Dokorou, Vassiliki N.; Milios, Constantinos J.; Tsipis, Athanassios C.; Haukka, Matti; Weidler, Peter G.; Powell, Annie K.; Kostakis, George E.; Dalton transactions (Cambridge, England : 2003) 41 (2012) 12501–12513; doi:10.1039/c2dt31383a

data_7020365
_publ_section_title
;
 Pseudopeptidic ligands: exploring the self-assembly of
 isophthaloylbisglycine (H2IBG) and divalent metal ions.
;
_journal_issue                   40
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              12501
_journal_page_last               12513
_journal_paper_doi               10.1039/c2dt31383a
_journal_volume                  41
_journal_year                    2012
_chemical_formula_sum            'C12 H20 N2 O11 Sr'
_chemical_formula_weight         455.92
_chemical_name_systematic
;
?
;
_space_group_IT_number           13
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yc'
_symmetry_space_group_name_H-M   'P 1 2/c 1'
_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                 92.234(14)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   15.246(3)
_cell_length_b                   6.8008(9)
_cell_length_c                   8.0856(13)
_cell_measurement_reflns_used    2220
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      25.25
_cell_measurement_theta_min      1.33
_cell_volume                     837.7(2)
_computing_cell_refinement       'STOE X-AREA'
_computing_data_collection       'STOE X-AREA'
_computing_data_reduction        'STOE X-RED'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      180(2)
_diffrn_detector                 'image plate ( 34 cm diameter )'
_diffrn_detector_type            STOE
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'STOE IPDS 2'
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0795
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            4170
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.67
_diffrn_reflns_theta_min         1.34
_exptl_absorpt_coefficient_mu    3.282
_exptl_absorpt_correction_T_max  0.8799
_exptl_absorpt_correction_T_min  0.4942
_exptl_absorpt_correction_type   sphere
_exptl_absorpt_process_details
;
Interpolation using Int.Tab. Vol. C (1992) p. 523,Tab. 6.3.3.3
for values of muR in the range 0-2.5, and Int.Tab. Vol.II (1959)
p.302; Table 5.3.6 B for muR in the range 2.6-10.0.
The interpolation procedure of C.W.Dwiggins Jr (Acta Cryst.(1975)
A31,146-148) is used with some modification.
;
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.807
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             464
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.04
_exptl_crystal_size_rad          0.0300
_refine_diff_density_max         1.682
_refine_diff_density_min         -0.876
_refine_diff_density_rms         0.105
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.971
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     124
_refine_ls_number_reflns         4182
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      0.971
_refine_ls_R_factor_all          0.0895
_refine_ls_R_factor_gt           0.0601
_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^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1558
_refine_ls_wR_factor_ref         0.1666
_reflns_number_gt                2822
_reflns_number_total             4170
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c2dt31383a.txt
_cod_data_source_block           4
_cod_original_sg_symbol_H-M      P2/c
_cod_database_code               7020365
_exptl_absorpt_correction_t_ave  0.6871