#------------------------------------------------------------------------------
#$Date: 2016-03-26 19:28:27 +0200 (Sat, 26 Mar 2016) $
#$Revision: 180436 $
#$URL: svn://www.crystallography.net/cod/cif/7/21/05/7210534.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_7210534
loop_
_publ_author_name
'Bond, Andrew D.'
'Solanko, Katarzyna A.'
'van de Streek, Jacco'
'Neumann, Marcus A.'
_publ_section_title
;
 Experimental verification of a subtle low-temperature phase transition
 suggested by DFT-D energy minimisation
;
_journal_issue                   6
_journal_name_full               CrystEngComm
_journal_page_first              1768
_journal_paper_doi               10.1039/c0ce00676a
_journal_volume                  13
_journal_year                    2011
_chemical_formula_moiety         'C20 H14 Cl4 O'
_chemical_formula_sum            'C20 H14 Cl4 O'
_chemical_formula_weight         412.11
_chemical_name_common            2,6-bis(2,4-dichlorobenzylidene)cyclohexanone
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   14.3623(6)
_cell_length_b                   7.8230(4)
_cell_length_c                   31.5402(13)
_cell_measurement_reflns_used    3584
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      25.03
_cell_measurement_theta_min      2.58
_cell_volume                     3543.7(3)
_computing_cell_refinement       'SAINT v.7.68a (Bruker, 2010)'
_computing_data_collection       'APEX2 v2010.1-2 (Bruker, 2010)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL v.6.12 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker Nonius X8APEX-II CCD'
_diffrn_measurement_method       'ω and φ 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  0.0263
_diffrn_reflns_av_sigmaI/netI    0.0304
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            10102
_diffrn_reflns_theta_full        25.04
_diffrn_reflns_theta_max         25.04
_diffrn_reflns_theta_min         3.54
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.673
_exptl_absorpt_correction_T_max  0.974
_exptl_absorpt_correction_T_min  0.000
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.545
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       lath
_exptl_crystal_F_000             1680
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.293
_refine_diff_density_min         -0.235
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     226
_refine_ls_number_reflns         3124
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0464
_refine_ls_R_factor_gt           0.0335
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[σ²(Fo²)+(0.0365P)²+3.6015P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0797
_refine_ls_wR_factor_ref         0.0845
_reflns_number_gt                2568
_reflns_number_total             3124
_reflns_threshold_expression     I>2σ(I)
_cod_data_source_file            c0ce00676a.txt
_cod_data_source_block           120K
_cod_database_code               7210534
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x+1/2, -y, z+1/2'
'-x, y+1/2, -z+1/2'
'x+1/2, -y+1/2, -z'
'-x, -y, -z'
'x-1/2, y, -z-1/2'
'x, -y-1/2, z-1/2'
'-x-1/2, y-1/2, z'
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
Cl1 Cl 0.28488(4) 0.18161(9) 0.413652(19) 0.02908(18) Uani 1 1 d .
Cl2 Cl 0.57034(4) 0.58942(9) 0.455957(19) 0.02977(18) Uani 1 1 d .
Cl3 Cl -0.01422(4) 0.02864(8) 0.162777(18) 0.01907(15) Uani 1 1 d .
Cl4 Cl 0.12858(5) 0.06489(10) 0.005919(19) 0.0364(2) Uani 1 1 d .
O1 O 0.13760(10) 0.3077(2) 0.27505(5) 0.0192(4) Uani 1 1 d .
C1 C 0.36177(16) 0.3436(3) 0.39972(7) 0.0172(5) Uani 1 1 d .
C2 C 0.42652(16) 0.3935(3) 0.42962(7) 0.0200(5) Uani 1 1 d .
H2A H 0.4288 0.3408 0.4567 0.024 Uiso 1 1 calc R
C3 C 0.48792(16) 0.5222(3) 0.41893(7) 0.0200(5) Uani 1 1 d .
C4 C 0.48579(16) 0.5997(3) 0.37980(7) 0.0200(5) Uani 1 1 d .
H4A H 0.5285 0.6882 0.3730 0.024 Uiso 1 1 calc R
C5 C 0.42054(16) 0.5466(3) 0.35056(8) 0.0194(5) Uani 1 1 d .
H5A H 0.4185 0.6007 0.3236 0.023 Uiso 1 1 calc R
C6 C 0.35734(15) 0.4158(3) 0.35939(7) 0.0166(5) Uani 1 1 d .
C7 C 0.28608(16) 0.3660(3) 0.32812(7) 0.0161(5) Uani 1 1 d .
H7A H 0.2252 0.3446 0.3386 0.019 Uiso 1 1 calc R
C8 C 0.29924(15) 0.3480(3) 0.28632(7) 0.0153(5) Uani 1 1 d .
C9 C 0.39252(15) 0.3556(3) 0.26445(7) 0.0162(5) Uani 1 1 d .
H9A H 0.4428 0.3418 0.2856 0.019 Uiso 1 1 calc R
H9B H 0.4003 0.4684 0.2507 0.019 Uiso 1 1 calc R
C10 C 0.39975(15) 0.2155(3) 0.23139(7) 0.0178(5) Uani 1 1 d .
H10A H 0.4629 0.2156 0.2188 0.021 Uiso 1 1 calc R
H10B H 0.3892 0.1029 0.2449 0.021 Uiso 1 1 calc R
C11 C 0.32749(15) 0.2448(3) 0.19678(7) 0.0166(5) Uani 1 1 d .
H11A H 0.3443 0.3491 0.1807 0.020 Uiso 1 1 calc R
H11B H 0.3291 0.1472 0.1768 0.020 Uiso 1 1 calc R
C12 C 0.22991(15) 0.2641(3) 0.21366(7) 0.0152(5) Uani 1 1 d .
C13 C 0.21591(15) 0.3053(3) 0.26002(7) 0.0151(5) Uani 1 1 d .
C14 C 0.15195(16) 0.2452(3) 0.19056(7) 0.0168(5) Uani 1 1 d .
H14A H 0.0948 0.2585 0.2053 0.020 Uiso 1 1 calc R
C15 C 0.14490(16) 0.2066(3) 0.14520(7) 0.0171(5) Uani 1 1 d .
C16 C 0.20811(16) 0.2701(3) 0.11510(8) 0.0209(5) Uani 1 1 d .
H16A H 0.2568 0.3433 0.1244 0.025 Uiso 1 1 calc R
C17 C 0.20240(17) 0.2306(3) 0.07270(8) 0.0228(6) Uani 1 1 d .
H17A H 0.2458 0.2770 0.0531 0.027 Uiso 1 1 calc R
C18 C 0.13253(17) 0.1223(3) 0.05912(7) 0.0223(6) Uani 1 1 d .
C19 C 0.06606(16) 0.0605(3) 0.08652(7) 0.0203(5) Uani 1 1 d .
H19A H 0.0173 -0.0113 0.0767 0.024 Uiso 1 1 calc R
C20 C 0.07219(15) 0.1059(3) 0.12893(7) 0.0168(5) Uani 1 1 d .
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'
O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Cl Cl 0.1484 0.1585 '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
C2 C1 C6 122.7(2)
C2 C1 Cl1 117.49(18)
C6 C1 Cl1 119.83(18)
C3 C2 C1 118.0(2)
C3 C2 H2A 121.0
C1 C2 H2A 121.0
C4 C3 C2 121.8(2)
C4 C3 Cl2 118.88(19)
C2 C3 Cl2 119.35(19)
C3 C4 C5 118.8(2)
C3 C4 H4A 120.6
C5 C4 H4A 120.6
C4 C5 C6 122.0(2)
C4 C5 H5A 119.0
C6 C5 H5A 119.0
C1 C6 C5 116.7(2)
C1 C6 C7 122.4(2)
C5 C6 C7 120.8(2)
C8 C7 C6 126.1(2)
C8 C7 H7A 117.0
C6 C7 H7A 117.0
C7 C8 C13 117.2(2)
C7 C8 C9 124.9(2)
C13 C8 C9 117.80(19)
C8 C9 C10 110.31(19)
C8 C9 H9A 109.6
C10 C9 H9A 109.6
C8 C9 H9B 109.6
C10 C9 H9B 109.6
H9A C9 H9B 108.1
C9 C10 C11 109.74(19)
C9 C10 H10A 109.7
C11 C10 H10A 109.7
C9 C10 H10B 109.7
C11 C10 H10B 109.7
H10A C10 H10B 108.2
C12 C11 C10 113.30(19)
C12 C11 H11A 108.9
C10 C11 H11A 108.9
C12 C11 H11B 108.9
C10 C11 H11B 108.9
H11A C11 H11B 107.7
C14 C12 C11 124.9(2)
C14 C12 C13 115.9(2)
C11 C12 C13 119.15(19)
O1 C13 C8 121.3(2)
O1 C13 C12 120.1(2)
C8 C13 C12 118.59(19)
C12 C14 C15 127.5(2)
C12 C14 H14A 116.2
C15 C14 H14A 116.2
C16 C15 C20 115.6(2)
C16 C15 C14 122.8(2)
C20 C15 C14 121.6(2)
C17 C16 C15 122.6(2)
C17 C16 H16A 118.7
C15 C16 H16A 118.7
C16 C17 C18 118.9(2)
C16 C17 H17A 120.6
C18 C17 H17A 120.6
C19 C18 C17 121.7(2)
C19 C18 Cl4 119.5(2)
C17 C18 Cl4 118.79(19)
C18 C19 C20 118.2(2)
C18 C19 H19A 120.9
C20 C19 H19A 120.9
C19 C20 C15 122.9(2)
C19 C20 Cl3 117.16(18)
C15 C20 Cl3 119.95(18)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
Cl1 C1 1.737(2)
Cl2 C3 1.744(2)
Cl3 C20 1.745(2)
Cl4 C18 1.738(2)
O1 C13 1.221(3)
C1 C2 1.381(3)
C1 C6 1.393(3)
C2 C3 1.380(3)
C2 H2A 0.9500
C3 C4 1.375(3)
C4 C5 1.379(3)
C4 H4A 0.9500
C5 C6 1.396(3)
C5 H5A 0.9500
C6 C7 1.474(3)
C7 C8 1.339(3)
C7 H7A 0.9500
C8 C13 1.494(3)
C8 C9 1.508(3)
C9 C10 1.516(3)
C9 H9A 0.9900
C9 H9B 0.9900
C10 C11 1.523(3)
C10 H10A 0.9900
C10 H10B 0.9900
C11 C12 1.507(3)
C11 H11A 0.9900
C11 H11B 0.9900
C12 C14 1.344(3)
C12 C13 1.511(3)
C14 C15 1.466(3)
C14 H14A 0.9500
C15 C16 1.405(3)
C15 C20 1.405(3)
C16 C17 1.375(3)
C16 H16A 0.9500
C17 C18 1.381(4)
C17 H17A 0.9500
C18 C19 1.375(3)
C19 C20 1.387(3)
C19 H19A 0.9500
loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
C6 C1 C2 C3 1.1(4)
Cl1 C1 C2 C3 -179.94(18)
C1 C2 C3 C4 -0.1(4)
C1 C2 C3 Cl2 179.67(18)
C2 C3 C4 C5 -0.1(4)
Cl2 C3 C4 C5 -179.92(18)
C3 C4 C5 C6 -0.6(4)
C2 C1 C6 C5 -1.8(3)
Cl1 C1 C6 C5 179.29(18)
C2 C1 C6 C7 -177.9(2)
Cl1 C1 C6 C7 3.2(3)
C4 C5 C6 C1 1.5(3)
C4 C5 C6 C7 177.7(2)
C1 C6 C7 C8 -141.6(3)
C5 C6 C7 C8 42.5(4)
C6 C7 C8 C13 -176.9(2)
C6 C7 C8 C9 7.6(4)
C7 C8 C9 C10 137.2(2)
C13 C8 C9 C10 -38.4(3)
C8 C9 C10 C11 63.9(2)
C9 C10 C11 C12 -53.6(3)
C10 C11 C12 C14 -161.2(2)
C10 C11 C12 C13 17.9(3)
C7 C8 C13 O1 8.9(3)
C9 C8 C13 O1 -175.2(2)
C7 C8 C13 C12 -173.0(2)
C9 C8 C13 C12 2.8(3)
C14 C12 C13 O1 5.2(3)
C11 C12 C13 O1 -174.0(2)
C14 C12 C13 C8 -172.9(2)
C11 C12 C13 C8 7.9(3)
C11 C12 C14 C15 -1.3(4)
C13 C12 C14 C15 179.5(2)
C12 C14 C15 C16 -35.7(4)
C12 C14 C15 C20 145.9(2)
C20 C15 C16 C17 -2.9(4)
C14 C15 C16 C17 178.6(2)
C15 C16 C17 C18 -0.9(4)
C16 C17 C18 C19 3.4(4)
C16 C17 C18 Cl4 -177.14(19)
C17 C18 C19 C20 -1.8(4)
Cl4 C18 C19 C20 178.72(18)
C18 C19 C20 C15 -2.3(4)
C18 C19 C20 Cl3 178.91(18)
C16 C15 C20 C19 4.6(3)
C14 C15 C20 C19 -176.9(2)
C16 C15 C20 Cl3 -176.70(17)
C14 C15 C20 Cl3 1.8(3)
