Crystal structure of (1<i>R</i>,2<i>S</i>,4<i>R</i>,7<i>R</i>,8<i>S</i>,9<i>R</i>)-3,3-dichloro-8,9-epoxy-4,8,12,12-tetramethyltricyclo[5.5.0.0^2,4^]dodecane
Benzalim, Ahmed; Auhmani, Aziz; Ait Itto, My Youssef; Daran, Jean-Claude; Auhmani, Abdelwahed; Acta Crystallographica Section E 71 (2015) o538–o539; doi:10.1107/S205698901501244X

data_2240894
_publ_section_title
;
 Crystal structure of
 (1<i>R</i>,2<i>S</i>,4<i>R</i>,7<i>R</i>,8<i>S</i>,9<i>R</i>)-3,3-dichloro-8,9-epoxy-4,8,12,12-tetramethyltricyclo[5.5.0.0^2,4^]dodecane
;
_journal_coeditor_code           XU5855
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o538
_journal_page_last               o539
_journal_paper_doi               10.1107/S205698901501244X
_journal_volume                  71
_journal_year                    2015
_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_common
10,10-Dichloro-2,7,7,11-tetramethyl-3-oxatetracyclo[6.5.0.0^2,4^.0^9,11^]tridecane
_chemical_name_systematic
(1<i>R</i>,2<i>S</i>,4<i>R</i>,7<i>R</i>,8<i>S</i>,9<i>R</i>)-3,3-Dichloro-8,9-epoxy-4,8,12,12-tetramethyltricyclo[5.5.0.0^2,4^]dodecane
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/6
_cell_angle_alpha                90
_cell_angle_beta                 115.710(7)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.7706(5)
_cell_length_b                   10.5467(4)
_cell_length_c                   9.1639(5)
_cell_measurement_reflns_used    4267
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      29.31
_cell_measurement_theta_min      4.26
_cell_volume                     763.75(8)
_computing_cell_refinement
;
CrysAlis PRO (Agilent, 2014)
;
_computing_data_collection
;
CrysAlis PRO (Agilent, 2014)
;
_computing_data_reduction
;
CrysAlis PRO (Agilent, 2014)
;
_computing_molecular_graphics
;
ORTEPIII (Burnett & Johnson, 1996) and ORTEP-3 for Windows (Farrugia,
2012)
;
_computing_publication_material
;
SHELXL2013 (Sheldrick, 2015)
;
_computing_structure_refinement
;
SHELXL2013 (Sheldrick, 2015)
;
_computing_structure_solution
;
SIR97 (Altomare <i>et al.</i>,  1999)
;
_diffrn_ambient_temperature      180(2)
_diffrn_detector_area_resol_mean 16.1978
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Agilent Xcalibur, Eos, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0212
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            7805
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.370
_diffrn_reflns_theta_min         3.221
_exptl_absorpt_coefficient_mu    0.416
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.90064
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(CrysAlis PRO; Agilent, 2014)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.319
_exptl_crystal_description       box
_exptl_crystal_F_000             324
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.340
_exptl_crystal_size_min          0.080
_refine_diff_density_max         0.438
_refine_diff_density_min         -0.183
_refine_ls_abs_structure_details
;
Flack <i>x</i> determined using 1242 quotients
[(<i>I</i>^+^)-(<i>I</i>^-^)]/[(<i>I</i>^+^)+(<i>I</i>^-^)]
(Parsons <i>et al.</i>,  2013)
;
_refine_ls_abs_structure_Flack   -0.02(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     176
_refine_ls_number_reflns         2945
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0295
_refine_ls_R_factor_gt           0.0285
_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^)+(0.0453P)^2^+0.1659P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0745
_refine_ls_wR_factor_ref         0.0756
_reflns_number_gt                2868
_reflns_number_total             2945
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            xu5855sup1.cif
_cod_data_source_block           I
_cod_database_code               2240894
_cod_database_fobs_code          2240894
_shelx_estimated_absorpt_t_min   0.851
_shelx_estimated_absorpt_t_max   0.968
_shelx_hkl_checksum              46662
_shelx_res_checksum              11534
_shelxl_version_number           2014/6