A chalcone showing positional disorder, two related diarylcyclohexenones showing enantiomeric disorder and a related hydroxyterphenyl, all derived from simple carbonyl precursors
Salian, Vinutha V.; Narayana, Badiadka; Yathirajan, Hemmige S.; Akkurt, Mehmet; Çelik, Ömer; Ersanlı, Cem Cüneyt; Glidewell, Christopher; Acta Crystallographica Section C 71 (2015) –; doi:10.1107/S2053229615011961

data_2019998
_publ_section_title
;
 A chalcone showing positional disorder, two related diarylcyclohexenones
 showing enantiomeric disorder and a related hydroxyterphenyl, all derived
 from simple carbonyl precursors
;
_journal_coeditor_code           SK3593
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S2053229615011961
_journal_volume                  71
_journal_year                    2015
_chemical_formula_iupac          'C18 H14 Cl2 O'
_chemical_formula_moiety         'C18 H14 Cl2 O'
_chemical_formula_sum            'C18 H14 Cl2 O'
_chemical_formula_weight         317.19
_chemical_name_systematic
;
(2<i>E</i>)-1-(2,4-Dichlorophenyl)-3-[4-(prop-1-en-2-yl)phenyl]prop-2-en-1-one
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   13.4314(4)
_cell_length_b                   8.2405(4)
_cell_length_c                   29.9252(9)
_cell_measurement_reflns_used    6379
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      33.351
_cell_measurement_theta_min      2.038
_cell_volume                     3312.2(2)
_computing_cell_refinement
;
SAINT (Bruker, 2007)
;
_computing_data_collection
;
APEX2 (Bruker, 2007)
;
_computing_data_reduction
;
SAINT (Bruker, 2007)
;
_computing_molecular_graphics
;
PLATON (Spek, 2009)
;
_computing_publication_material
;
SHELXL2014 (Sheldrick, 2015) and PLATON (Spek, 2009)
;
_computing_structure_refinement
;
SHELXL2014 (Sheldrick, 2015)
;
_computing_structure_solution
;
SHELXS97 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEXII CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0325
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            17929
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.541
_diffrn_reflns_theta_min         2.038
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.387
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.272
_exptl_crystal_description       block
_exptl_crystal_F_000             1312
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.300
_exptl_crystal_size_min          0.150
_refine_diff_density_max         0.464
_refine_diff_density_min         -0.308
_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     254
_refine_ls_number_reflns         3450
_refine_ls_number_restraints     52
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0994
_refine_ls_R_factor_gt           0.0580
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1057P)^2^+0.9703P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1747
_refine_ls_wR_factor_ref         0.2063
_reflns_number_gt                2028
_reflns_number_total             3450
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sk3593sup1.cif
_cod_data_source_block           I
_cod_database_code               2019998
_cod_database_fobs_code          2019998
_shelx_estimated_absorpt_t_min   0.860
_shelx_estimated_absorpt_t_max   0.944
_shelx_hkl_checksum              61806
_shelx_res_checksum              64142
_shelxl_version_number           2.014