Systematic structural analysis of a series of anion receptor complexes
Kirby, Isabelle L.; Pitak, Mateusz B.; Wenzel, Marco; Wilson, Claire; Sparkes, Hazel A.; Coles, Simon J.; Gale, Philip A.; CrystEngComm 15 (2013) 9003–; doi:10.1039/c3ce41503a

data_7211212
_publ_section_title
;
 Systematic structural analysis of a series of anion receptor complexes
;
_journal_issue                   44
_journal_name_full               CrystEngComm
_journal_page_first              9003
_journal_paper_doi               10.1039/c3ce41503a
_journal_volume                  15
_journal_year                    2013
_chemical_formula_moiety         'C13 H10 N4 O5'
_chemical_formula_sum            'C13 H10 N4 O5'
_chemical_formula_weight         302.25
_chemical_name_systematic
;
 1,3-bis(2-nitrophenyl)urea
;
_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                   21.8064(19)
_cell_length_b                   4.6133(3)
_cell_length_c                   12.5773(11)
_cell_measurement_reflns_used    24315
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1265.27(18)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean '4096x4096pixels / 62x62mm'
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type
'Bruker-Nonius APEX II CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0521
_diffrn_reflns_av_sigmaI/netI    0.0441
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            8408
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.57
_diffrn_reflns_theta_min         3.24
_exptl_absorpt_coefficient_mu    0.125
_exptl_absorpt_correction_T_max  0.9814
_exptl_absorpt_correction_T_min  0.9516
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2007/2 (Sheldrick, G.M., 2007)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.587
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       slab
_exptl_crystal_F_000             624
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.290
_refine_diff_density_min         -0.240
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.098
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         1502
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.097
_refine_ls_R_factor_all          0.0621
_refine_ls_R_factor_gt           0.0541
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0440P)^2^+1.7441P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1238
_refine_ls_wR_factor_ref         0.1303
_reflns_number_gt                1347
_reflns_number_total             1502
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c3ce41503a.txt
_cod_data_source_block           S3freeligand
_cod_database_code               7211212