1-[(1<i>R</i>,2<i>S</i>,4<i>R</i>,7<i>S</i>)-3,3-Dichloro-4,11,11-trimethyltricyclo[5.4.0.0^2,4^]undecan-7-yl]ethanone
Benharref, Ahmed; El Ammari, Lahcen; Saadi, Mohamed; Ait Elhad, Mustapha; Oukhrib, Abdelouahd; Berraho, Moha; IUCrData 2 (2017) x170198–; doi:10.1107/S2414314617001985

data_1545501
_publ_section_title
;
 1-[(1<i>R</i>,2<i>S</i>,4<i>R</i>,7<i>S</i>)-3,3-Dichloro-4,11,11-trimethyltricyclo[5.4.0.0^2,4^]undecan-7-yl]ethanone
;
_journal_coeditor_code           RZ4010
_journal_issue                   2
_journal_name_full               IUCrData
_journal_page_first              x170198
_journal_paper_doi               10.1107/S2414314617001985
_journal_volume                  2
_journal_year                    2017
_chemical_formula_iupac          'C16 H24 Cl2 O'
_chemical_formula_moiety         'C16 H24 Cl2 O'
_chemical_formula_sum            'C16 H24 Cl2 O'
_chemical_formula_weight         303.25
_chemical_name_systematic
1-[(1<i>R</i>,2<i>S</i>,4<i>R</i>,7<i>S</i>)-3,3-Dichloro-4,11,11-trimethyl&shy;tricyclo[5.4.0.0^2,4^]undecan-7-yl]ethanone
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   13.373(3)
_cell_length_b                   13.996(3)
_cell_length_c                   17.219(4)
_cell_measurement_reflns_used    6602
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      26.4
_cell_measurement_theta_min      2.1
_cell_volume                     3222.9(12)
_computing_cell_refinement
;
SAINT (Bruker, 2009)
;
_computing_data_collection
;
APEX2 (Bruker, 2009)
;
_computing_data_reduction
;
SAINT (Bruker, 2009)
;
_computing_molecular_graphics
;
ORTEP-3 for Windows (Farrugia, 2012)
;
_computing_publication_material
;
publCIF (Westrip, 2010)
;
_computing_structure_refinement
;
SHELXL2014 (Sheldrick, 2015b)
;
_computing_structure_solution
;
SHELXS2014 (Sheldrick, 2015a)
;
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker X8 APEX'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0274
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            42837
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.372
_diffrn_reflns_theta_min         2.106
_exptl_absorpt_coefficient_mu    0.394
_exptl_absorpt_correction_T_max  0.7466
_exptl_absorpt_correction_T_min  0.6788
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(SADABS; Sheldrick, 2008)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.250
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             1296
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.245
_refine_diff_density_min         -0.146
_refine_ls_abs_structure_details
;
Flack <i>x</i> determined using 2562 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons <i>et al.</i>,  2013)
;
_refine_ls_abs_structure_Flack   -0.003(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     351
_refine_ls_number_reflns         6602
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0361
_refine_ls_R_factor_gt           0.0321
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0451P)^2^+0.5607P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0808
_refine_ls_wR_factor_ref         0.0842
_reflns_number_gt                6117
_reflns_number_total             6602
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            rz4010sup1.cif
_cod_data_source_block           I
_cod_database_code               1545501
_cod_database_fobs_code          1545501
_shelx_hkl_checksum              38388
_shelx_res_checksum              7689