#------------------------------------------------------------------------------
#$Date: 2008-01-27 15:50:57 +0100 (Sun, 27 Jan 2008) $
#$Revision: 30 $
#$URL: svn://www.crystallography.net/cod/cif/2/2100370.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_2100370
_journal_coeditor_code           DE5020
_journal_date_accepted           2005-11-19
_journal_date_recd_electronic    2005-04-29
_journal_issue                   1
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              109
_journal_page_last               117
_journal_paper_category          FA
_journal_volume                  62
_journal_year                    2006
_chemical_formula_moiety         'C7 H3 Br2 N O'
_chemical_formula_sum            'C7 H3 Br2 N O'
_chemical_formula_weight         276.92
_chemical_name_common            Bromoxynil
_chemical_name_systematic
;
 3,5-dibromo-4-hydroxybenzonitrile
;
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXTL
_cell_angle_alpha                79.680(10)
_cell_angle_beta                 83.710(10)
_cell_angle_gamma                83.060(10)
_cell_formula_units_Z            '4 '
_cell_length_a                   3.9684(10)
_cell_length_b                   12.669(3)
_cell_length_c                   16.047(4)
_cell_measurement_reflns_used    2619
_cell_measurement_temperature    174(2)
_cell_measurement_theta_max      27.20
_cell_measurement_theta_min      2.83
_cell_volume                     784.7(3)
_computing_cell_refinement       'SAINT (Bruker, 2002)'
_computing_data_collection       'SMART (Bruker, 2002)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      174(2)
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type
;
Siemens area detector diffractometer
;
_diffrn_measurement_method       '\w scans'
_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  0.042
_diffrn_reflns_av_sigmaI/netI    0.058
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            8883
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         1.30
_diffrn_standards_decay_%        'less than 1'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    10.263
_exptl_absorpt_correction_T_max  0.440
_exptl_absorpt_correction_T_min  0.105
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS;  Sheldrick, 1996;  Blessing, 1995'
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.344
_exptl_crystal_density_meas      'not measured'
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.74
_refine_diff_density_min         -1.61
_refine_ls_extinction_expression
;
 Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.09
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         3510
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.09
_refine_ls_R_factor_all          0.057
_refine_ls_R_factor_gt           0.047
_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^)+(0.066P)^2^+0.42P] where
P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.117
_refine_ls_wR_factor_ref         0.120
_reflns_number_gt                2975
_reflns_number_total             3510
_reflns_threshold_expression     '>2\s(I) '
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, -z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_occupancy
_atom_site_type_symbol
C11 -0.0095(12) 0.9176(4) 0.3529(3) 0.0227(10) Uani d . 1 C
C12 -0.0705(12) 0.9253(4) 0.2676(3) 0.0232(10) Uani d . 1 C
H12 -0.1906 0.9882 0.2386 0.028 Uiso calc R 1 H
Br13 -0.04126(13) 0.84563(5) 0.11182(3) 0.02951(17) Uani d . 1 Br
C13 0.0476(12) 0.8394(4) 0.2264(3) 0.0229(10) Uani d . 1 C
O14 0.3444(9) 0.6603(3) 0.2300(2) 0.0320(9) Uani d . 1 O
H14 0.2966 0.6726 0.1792 0.048 Uiso calc R 1 H
C14 0.2266(11) 0.7469(4) 0.2676(3) 0.0228(10) Uani d . 1 C
Br15 0.51745(13) 0.61547(4) 0.41019(3) 0.02696(17) Uani d . 1 Br
C15 0.2814(12) 0.7423(4) 0.3526(3) 0.0240(11) Uani d . 1 C
C16 0.1678(12) 0.8260(4) 0.3959(3) 0.0220(10) Uani d . 1 C
H16 0.2092 0.8214 0.4537 0.026 Uiso calc R 1 H
N17 -0.2474(12) 1.0800(4) 0.4266(3) 0.0336(11) Uani d . 1 N
C17 -0.1384(12) 1.0078(4) 0.3959(3) 0.0254(11) Uani d . 1 C
C21 0.8384(11) 0.4237(4) 0.1469(3) 0.0208(10) Uani d . 1 C
C22 0.8960(12) 0.4265(4) 0.2305(3) 0.0227(10) Uani d . 1 C
H22 0.8098 0.4868 0.2571 0.027 Uiso calc R 1 H
Br23 1.17513(13) 0.33922(4) 0.38743(3) 0.02710(17) Uani d . 1 Br
C23 1.0847(12) 0.3378(4) 0.2736(3) 0.0217(10) Uani d . 1 C
O24 1.4033(9) 0.1624(3) 0.2758(2) 0.0287(8) Uani d . 1 O
H24 1.4262 0.1708 0.3255 0.034 Uiso calc R 1 H
C24 1.2159(11) 0.2491(4) 0.2365(3) 0.0209(10) Uani d . 1 C
Br25 1.33538(13) 0.13119(4) 0.09937(3) 0.02804(17) Uani d . 1 Br
C25 1.1513(11) 0.2491(4) 0.1521(3) 0.0207(10) Uani d . 1 C
C26 0.9636(11) 0.3361(4) 0.1071(3) 0.0210(10) Uani d . 1 C
H26 0.9212 0.3358 0.0500 0.025 Uiso calc R 1 H
N27 0.5009(11) 0.5912(4) 0.0657(3) 0.0327(11) Uani d . 1 N
C27 0.6505(12) 0.5170(4) 0.1000(3) 0.0243(11) Uani d . 1 C
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
C11 0.027(2) 0.022(3) 0.020(2) -0.001(2) -0.0030(18) -0.0080(19)
C12 0.026(2) 0.024(3) 0.020(2) 0.000(2) -0.0070(18) -0.0025(19)
Br13 0.0399(3) 0.0331(3) 0.0167(3) 0.0045(2) -0.0087(2) -0.0093(2)
C13 0.029(2) 0.023(3) 0.019(2) -0.004(2) -0.0043(18) -0.0070(19)
O14 0.047(2) 0.027(2) 0.0227(19) 0.0064(17) -0.0078(16) -0.0115(16)
C14 0.028(3) 0.020(3) 0.022(3) 0.000(2) -0.0007(19) -0.010(2)
Br15 0.0355(3) 0.0207(3) 0.0235(3) 0.0042(2) -0.0071(2) -0.0029(2)
C15 0.025(2) 0.024(3) 0.022(2) -0.004(2) -0.0064(18) 0.002(2)
C16 0.029(2) 0.022(3) 0.017(2) -0.002(2) -0.0032(18) -0.0076(19)
N17 0.049(3) 0.027(3) 0.026(2) 0.009(2) -0.013(2) -0.009(2)
C17 0.034(3) 0.022(3) 0.022(3) 0.003(2) -0.012(2) -0.006(2)
C21 0.021(2) 0.021(3) 0.021(2) -0.0004(19) -0.0036(17) -0.0052(19)
C22 0.028(2) 0.021(3) 0.020(2) 0.000(2) -0.0002(18) -0.0093(19)
Br23 0.0360(3) 0.0303(3) 0.0166(3) -0.0001(2) -0.00651(19) -0.0078(2)
C23 0.024(2) 0.029(3) 0.013(2) -0.007(2) -0.0007(17) -0.0036(19)
O24 0.039(2) 0.026(2) 0.0206(18) 0.0079(16) -0.0116(15) -0.0072(15)
C24 0.022(2) 0.022(3) 0.020(2) -0.0031(19) -0.0022(17) -0.0031(19)
Br25 0.0358(3) 0.0261(3) 0.0231(3) 0.0066(2) -0.0054(2) -0.0114(2)
C25 0.025(2) 0.024(3) 0.015(2) -0.003(2) -0.0007(17) -0.0075(19)
C26 0.022(2) 0.028(3) 0.013(2) -0.001(2) -0.0043(17) -0.0043(19)
N27 0.042(3) 0.031(3) 0.024(2) 0.006(2) -0.0052(19) -0.008(2)
C27 0.033(3) 0.025(3) 0.015(2) 0.000(2) -0.003(2) -0.004(2)
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'
Br Br -0.2901 2.4595 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
C16 C11 C12 121.3(5)
C16 C11 C17 120.5(4)
C12 C11 C17 118.2(4)
C13 C12 C11 118.6(5)
C13 C12 H12 120.7
C11 C12 H12 120.7
C12 C13 C14 121.4(5)
C12 C13 Br13 119.6(4)
C14 C13 Br13 118.9(4)
C14 O14 H14 109.5
O14 C14 C13 123.5(4)
O14 C14 C15 118.3(4)
C13 C14 C15 118.2(5)
C16 C15 C14 122.2(5)
C16 C15 Br15 119.2(4)
C14 C15 Br15 118.6(4)
C15 C16 C11 118.3(4)
C15 C16 H16 120.9
C11 C16 H16 120.9
N17 C17 C11 176.9(5)
C22 C21 C26 121.9(4)
C22 C21 C27 118.2(5)
C26 C21 C27 119.9(4)
C23 C22 C21 117.4(5)
C23 C22 H22 121.3
C21 C22 H22 121.3
C24 C23 C22 122.6(4)
C24 C23 Br23 118.5(4)
C22 C23 Br23 118.8(4)
C24 O24 H24 109.5
O24 C24 C23 124.4(4)
O24 C24 C25 117.4(4)
C23 C24 C25 118.2(4)
C26 C25 C24 120.7(4)
C26 C25 Br25 120.2(4)
C24 C25 Br25 119.1(4)
C25 C26 C21 119.1(4)
C25 C26 H26 120.5
C21 C26 H26 120.5
N27 C27 C21 177.8(5)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
C11 C16 1.394(7)
C11 C12 1.401(7)
C11 C17 1.452(7)
C12 C13 1.381(7)
C12 H12 0.9500
Br13 C13 1.895(5)
C13 C14 1.392(7)
O14 C14 1.355(6)
O14 H14 0.8400
C14 C15 1.395(7)
Br15 C15 1.899(5)
C15 C16 1.375(7)
C16 H16 0.9500
N17 C17 1.133(7)
C21 C22 1.394(7)
C21 C26 1.392(7)
C21 C27 1.453(6)
C22 C23 1.391(7)
C22 H22 0.9500
Br23 C23 1.903(5)
C23 C24 1.385(7)
O24 C24 1.347(5)
O24 H24 0.8400
C24 C25 1.406(6)
Br25 C25 1.880(5)
C25 C26 1.387(6)
C26 H26 0.9500
N27 C27 1.136(6)