 
data_2008lsh067
 
_audit_creation_method            SHELXL-97
_chemical_name_systematic
;
 N,N'-bis(3-Iodophenyl)urea
;
_chemical_name_common             ?
_chemical_melting_point           ?
_chemical_formula_moiety          ?
_chemical_formula_sum
 'C13 H10 I2 N2 O'
_chemical_formula_weight          464.03
 
loop_
 _atom_type_symbol
 _atom_type_description
 _atom_type_scat_dispersion_real
 _atom_type_scat_dispersion_imag
 _atom_type_scat_source
 'C'  'C'   0.0033   0.0016
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 'H'  'H'   0.0000   0.0000
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 'N'  'N'   0.0061   0.0033
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 'O'  'O'   0.0106   0.0060
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 'I'  'I'  -0.4742   1.8119
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
 
_symmetry_cell_setting            Orthorhombic
_symmetry_space_group_name_H-M    P21212
 
loop_
 _symmetry_equiv_pos_as_xyz
 'x, y, z'
 '-x, -y, z'
 'x+1/2, -y+1/2, -z'
 '-x+1/2, y+1/2, -z'
 
_cell_length_a                    9.6365(3)
_cell_length_b                    15.3873(5)
_cell_length_c                    4.56700(10)
_cell_angle_alpha                 90.00
_cell_angle_beta                  90.00
_cell_angle_gamma                 90.00
_cell_volume                      677.19(3)
_cell_formula_units_Z             2
_cell_measurement_temperature     120(2)
_cell_measurement_reflns_used     5220
_cell_measurement_theta_min       2.91
_cell_measurement_theta_max       27.48
 
_exptl_crystal_description        needle
_exptl_crystal_colour             colourless
_exptl_crystal_size_max           0.50
_exptl_crystal_size_mid           0.08
_exptl_crystal_size_min           0.06
_exptl_crystal_density_meas       ?
_exptl_crystal_density_diffrn     2.276
_exptl_crystal_density_method     'not measured'
_exptl_crystal_F_000              432
_exptl_absorpt_coefficient_mu     4.633
_exptl_absorpt_correction_type    multi-scan
_exptl_absorpt_correction_T_min   0.2053
_exptl_absorpt_correction_T_max   0.7685
_exptl_absorpt_process_details    
'SADABS 2007/2 (Sheldrick, G.M., 2007)' 
 
_exptl_special_details
;
The Tmin and Tmax values above were generated with the
SIZE command in SHELXL and rely entirely on the crystal 
dimensions given. 
SADABS reports the ratio of minimum to maximum apparent 
transmission as 0.659321.   
;
 
_diffrn_ambient_temperature       120(2)
_diffrn_radiation_wavelength      0.71073
_diffrn_radiation_type            MoK\a
_diffrn_radiation_source          'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_monochromator    '10cm confocal mirrors'
_diffrn_measurement_device_type   
'Bruker-Nonius APEX II CCD camera on κ-goniostat'
_diffrn_measurement_method          'φ & ω scans'
_diffrn_detector_area_resol_mean   '4096x4096pixels / 62x62mm'
_diffrn_standards_number          ?
_diffrn_standards_interval_count  ?
_diffrn_standards_interval_time   ?
_diffrn_standards_decay_%         ?
_diffrn_reflns_number             6675
_diffrn_reflns_av_R_equivalents   0.0334
_diffrn_reflns_av_sigmaI/netI     0.0304
_diffrn_reflns_limit_h_min        -12
_diffrn_reflns_limit_h_max        12
_diffrn_reflns_limit_k_min        -19
_diffrn_reflns_limit_k_max        19
_diffrn_reflns_limit_l_min        -5
_diffrn_reflns_limit_l_max        5
_diffrn_reflns_theta_min          3.39
_diffrn_reflns_theta_max          27.49
_reflns_number_total              1537
_reflns_number_gt                 1520
_reflns_threshold_expression      >2sigma(I)
 
_computing_data_collection        'COLLECT (Hooft, R.W.W., 1998)'
_computing_cell_refinement        
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
#Although determined using DirAx, the cell is refined in the HKL
#package during data reduction
_computing_data_reduction         
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'  
_computing_structure_solution     'SHELXS-97 (Sheldrick, 1997)'
_computing_structure_refinement   'SHELXL-97 (Sheldrick, 1997)'
_computing_molecular_graphics     ?
_computing_publication_material   ?
 
_refine_special_details
;
 Refinement of F² against ALL reflections.  The weighted R-factor wR and
 goodness of fit S are based on F², conventional R-factors R are based
 on F, with F set to zero for negative F². The threshold expression of
 F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is
 not relevant to the choice of reflections for refinement.  R-factors based
 on F² are statistically about twice as large as those based on F, and R-
 factors based on ALL data will be even larger.

The structure shows racemic twinning and the ratio was refined to 26% : 84%
using the TWIN and BASF commands. 
;
 
_refine_ls_structure_factor_coef  Fsqd
_refine_ls_matrix_type            full
_refine_ls_weighting_scheme       calc
_refine_ls_weighting_details
 'calc w=1/[σ²(Fo²)+(0.0000P)²+0.4601P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary      direct
_atom_sites_solution_secondary    difmap
_atom_sites_solution_hydrogens    geom
_refine_ls_hydrogen_treatment     mixed
_refine_ls_extinction_method      none
_refine_ls_extinction_coef        ?
_refine_ls_abs_structure_details
 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack    0.26(3)
_refine_ls_number_reflns          1537
_refine_ls_number_parameters      88
_refine_ls_number_restraints      1
_refine_ls_R_factor_all           0.0183
_refine_ls_R_factor_gt            0.0175
_refine_ls_wR_factor_ref          0.0401
_refine_ls_wR_factor_gt           0.0395
_refine_ls_goodness_of_fit_ref    1.084
_refine_ls_restrained_S_all       1.084
_refine_ls_shift/su_max           0.001
_refine_ls_shift/su_mean          0.000
 
loop_
 _atom_site_label
 _atom_site_type_symbol
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_U_iso_or_equiv
 _atom_site_adp_type
 _atom_site_occupancy
 _atom_site_symmetry_multiplicity
 _atom_site_calc_flag
 _atom_site_refinement_flags
 _atom_site_disorder_assembly
 _atom_site_disorder_group
C1 C 0.1331(3) 0.13524(17) 0.6905(6) 0.0149(5) Uani 1 1 d . . .
C2 C 0.1083(3) 0.21918(17) 0.5848(6) 0.0159(5) Uani 1 1 d . . .
H2 H 0.0382 0.2292 0.4426 0.019 Uiso 1 1 calc R . .
C3 C 0.1878(3) 0.28774(18) 0.6909(7) 0.0177(6) Uani 1 1 d . . .
C4 C 0.2909(3) 0.27458(19) 0.8996(6) 0.0184(6) Uani 1 1 d . . .
H4 H 0.3447 0.3219 0.9704 0.022 Uiso 1 1 calc R . .
C5 C 0.3133(3) 0.19084(19) 1.0020(7) 0.0212(6) Uani 1 1 d . . .
H5 H 0.3831 0.1809 1.1450 0.025 Uiso 1 1 calc R . .
C6 C 0.2356(3) 0.12134(18) 0.8990(6) 0.0185(6) Uani 1 1 d . . .
H6 H 0.2524 0.0644 0.9710 0.022 Uiso 1 1 calc R . .
C7 C 0.0000 0.0000 0.7328(9) 0.0150(8) Uani 1 2 d S . .
N1 N 0.0549(2) 0.06647(14) 0.5706(5) 0.0153(5) Uani 1 1 d D . .
O1 O 0.0000 0.0000 1.0028(7) 0.0247(7) Uani 1 2 d S . .
I1 I 0.147015(19) 0.413680(11) 0.53594(4) 0.02405(7) Uani 1 1 d . . .
H1N H 0.036(3) 0.063(2) 0.387(4) 0.016(8) Uiso 1 1 d D . .
 
loop_
 _atom_site_aniso_label
 _atom_site_aniso_U_11
 _atom_site_aniso_U_22
 _atom_site_aniso_U_33
 _atom_site_aniso_U_23
 _atom_site_aniso_U_13
 _atom_site_aniso_U_12
C1 0.0157(13) 0.0163(13) 0.0126(12) -0.0015(10) 0.0027(12) -0.0005(11)
C2 0.0159(12) 0.0152(13) 0.0168(13) -0.0008(10) -0.0007(10) 0.0018(10)
C3 0.0187(13) 0.0135(13) 0.0209(14) -0.0004(11) 0.0046(11) -0.0003(11)
C4 0.0163(12) 0.0190(14) 0.0200(14) -0.0056(12) 0.0035(11) -0.0035(11)
C5 0.0184(13) 0.0275(15) 0.0179(15) -0.0020(12) -0.0026(11) 0.0002(11)
C6 0.0211(13) 0.0181(13) 0.0162(14) -0.0016(11) -0.0002(12) 0.0004(11)
C7 0.0190(18) 0.0119(19) 0.0140(19) 0.000 0.000 -0.0016(16)
N1 0.0214(11) 0.0133(11) 0.0112(10) -0.0009(9) -0.0008(10) -0.0029(9)
O1 0.0337(16) 0.0283(16) 0.0122(15) 0.000 0.000 -0.0141(13)
I1 0.02677(11) 0.01400(10) 0.03138(11) 0.00177(7) 0.00064(8) -0.00204(8)
 
_geom_special_details
;
 All esds (except the esd in the dihedral angle between two l.s. planes)
 are estimated using the full covariance matrix.  The cell esds are taken
 into account individually in the estimation of esds in distances, angles
 and torsion angles; correlations between esds in cell parameters are only
 used when they are defined by crystal symmetry.  An approximate (isotropic)
 treatment of cell esds is used for estimating esds involving l.s. planes.
;
 
loop_
 _geom_bond_atom_site_label_1
 _geom_bond_atom_site_label_2
 _geom_bond_distance
 _geom_bond_site_symmetry_2
 _geom_bond_publ_flag
C1 C6 1.388(4) . ?
C1 C2 1.399(4) . ?
C1 N1 1.410(3) . ?
C2 C3 1.391(4) . ?
C2 H2 0.9500 . ?
C3 C4 1.392(4) . ?
C3 I1 2.100(3) . ?
C4 C5 1.388(4) . ?
C4 H4 0.9500 . ?
C5 C6 1.388(4) . ?
C5 H5 0.9500 . ?
C6 H6 0.9500 . ?
C7 O1 1.233(5) . ?
C7 N1 1.369(3) 2 ?
C7 N1 1.369(3) . ?
N1 H1N 0.860(18) . ?
 
loop_
 _geom_angle_atom_site_label_1
 _geom_angle_atom_site_label_2
 _geom_angle_atom_site_label_3
 _geom_angle
 _geom_angle_site_symmetry_1
 _geom_angle_site_symmetry_3
 _geom_angle_publ_flag
C6 C1 C2 120.0(3) . . ?
C6 C1 N1 122.1(2) . . ?
C2 C1 N1 117.9(2) . . ?
C3 C2 C1 119.1(3) . . ?
C3 C2 H2 120.5 . . ?
C1 C2 H2 120.5 . . ?
C2 C3 C4 121.4(3) . . ?
C2 C3 I1 118.6(2) . . ?
C4 C3 I1 119.9(2) . . ?
C5 C4 C3 118.5(3) . . ?
C5 C4 H4 120.8 . . ?
C3 C4 H4 120.8 . . ?
C6 C5 C4 121.2(3) . . ?
C6 C5 H5 119.4 . . ?
C4 C5 H5 119.4 . . ?
C5 C6 C1 119.8(3) . . ?
C5 C6 H6 120.1 . . ?
C1 C6 H6 120.1 . . ?
O1 C7 N1 122.76(17) . 2 ?
O1 C7 N1 122.76(17) . . ?
N1 C7 N1 114.5(3) 2 . ?
C7 N1 C1 123.9(2) . . ?
C7 N1 H1N 113(2) . . ?
C1 N1 H1N 123(2) . . ?
 
loop_
 _geom_hbond_atom_site_label_D
 _geom_hbond_atom_site_label_H
 _geom_hbond_atom_site_label_A
 _geom_hbond_distance_DH
 _geom_hbond_distance_HA
 _geom_hbond_distance_DA
 _geom_hbond_angle_DHA
 _geom_hbond_site_symmetry_A
N1 H1N O1  0.860(18) 2.03(2) 2.837(4) 155(3) 1_554
 
_diffrn_measured_fraction_theta_max    0.996
_diffrn_reflns_theta_full              27.49
_diffrn_measured_fraction_theta_full   0.996
_refine_diff_density_max    0.336
_refine_diff_density_min   -0.339
_refine_diff_density_rms    0.077
