Crystal structure of (4b<i>S</i>,8a<i>R</i>)-1-isopropyl-4b,8,8-trimethyl-7-oxo-4b,7,8,8a,9,10-hexahydrophenanthren-2-yl acetate
Laamari, Yassine; Ait Itto, Moulay Youssef; Riahi, Abdelkhalek; Chevreux, Sylviane; Auhmani, Aziz; Ketatni, El Mostafa; Acta Crystallographica Section E 74 (2018) 728–730; doi:10.1107/S2056989018005510

data_2242458
_publ_section_title
;
 Crystal structure of
 (4b<i>S</i>,8a<i>R</i>)-1-isopropyl-4b,8,8-trimethyl-7-oxo-4b,7,8,8a,9,10-hexahydrophenanthren-2-yl
 acetate
;
_journal_coeditor_code           XU5922
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              728
_journal_page_last               730
_journal_paper_doi               10.1107/S2056989018005510
_journal_volume                  74
_journal_year                    2018
_chemical_formula_iupac          'C22 H28 O3'
_chemical_formula_moiety         'C22 H28 O3'
_chemical_formula_sum            'C22 H28 O3'
_chemical_formula_weight         340.44
_chemical_name_systematic
'(4b<i>S</i>,8a<i>R</i>)-1-Isopropyl-4b,8,8-trimethyl-7-oxo-4b,7,8,8a,9,10-hexahydrophenanthren-2-yl acetate'
_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-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 102.2350(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.4103(2)
_cell_length_b                   10.4681(3)
_cell_length_c                   12.8121(3)
_cell_measurement_reflns_used    3909
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      74.530
_cell_measurement_theta_min      3.530
_cell_volume                     971.28(4)
_computing_cell_refinement
;
SAINT (Bruker, 2012)
;
_computing_data_collection
;
APEX2 (Bruker, 2012)
;
_computing_data_reduction
;
SAINT (Bruker, 2012)
;
_computing_molecular_graphics
;
ORTEP-3 for Windows (Farrugia, 2012) and DIAMOND (Brandenburg et al.,
2012)
;
_computing_publication_material
;
PLATON (Spek, 2009) and publCIF (Westrip, 2010)
;
_computing_structure_refinement
;
SHELXL2014 (Sheldrick, 2015)
;
_computing_structure_solution
;
SHELXS2014 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'D8 Venture CMOS area detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0285
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            17946
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         74.530
_diffrn_reflns_theta_min         3.530
_exptl_absorpt_coefficient_mu    0.599
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
;
(SADABS; Bruker, 2012)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.164
_exptl_crystal_description       block
_exptl_crystal_F_000             368
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.160
_refine_diff_density_min         -0.171
_refine_ls_abs_structure_details
;
Flack <i>x</i> determined using 1757 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(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     252
_refine_ls_number_reflns         3909
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0302
_refine_ls_R_factor_gt           0.0298
_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^)+(0.0376P)^2^+0.2106P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0761
_refine_ls_wR_factor_ref         0.0765
_reflns_number_gt                3852
_reflns_number_total             3909
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            xu5922sup1.cif
_cod_data_source_block           I
_cod_database_code               2242458
_shelx_hkl_checksum              84517
_shelx_res_checksum              37735
_cod_database_fobs_code 2242458