<i>cis</i>,<i>trans</i>,<i>cis</i>,<i>cis</i>-7-<i>tert</i>-Butyldimethylsilyloxy-4,10-dimethyltetracyclo[5.4.1.0^4,12^.0^10,12^]dodecan-2-one
Weyermann, Philipp; Keese, Reinhart; Stoeckli-Evans, Helen; Acta Crystallographica Section E 66 (2010) o340–; doi:10.1107/S1600536810000887

data_2224955
_publ_section_title
<i>cis</i>,<i>trans</i>,<i>cis</i>,<i>cis</i>-7-<i>tert</i>-Butyldimethylsilyloxy-4,10-dimethyltetracyclo[5.4.1.0^4,12^.0^10,12^]dodecan-2-one
_journal_coeditor_code           FK2011
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o340
_journal_paper_doi               10.1107/S1600536810000887
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C20 H34 O2 Si'
_chemical_formula_moiety         'C20 H34 O2 Si'
_chemical_formula_sum            'C20 H34 O2 Si'
_chemical_formula_weight         334.56
_chemical_name_systematic
;
<i>cis</i>,<i>trans</i>,<i>cis</i>,<i>cis</i>-7-<i>tert</i>-
Butyldimethylsilyloxy-4,10-dimethyltetracyclo[5.4.1.0^4,12^.0^10,12^]dodecan-
2-one
;
_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                   13.7374(13)
_cell_length_b                   14.7647(11)
_cell_length_c                   19.2829(12)
_cell_measurement_reflns_used    20
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      17.7
_cell_measurement_theta_min      14
_cell_volume                     3911.1(5)
_computing_cell_refinement       'STADI-4 (Stoe & Cie, 1997)'
_computing_data_collection       'STADI-4 (Stoe & Cie, 1997)'
_computing_data_reduction        'X-RED (Stoe & Cie, 1997)'
_computing_molecular_graphics    'PLATON  (Spek, 2009)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Stoe AED2 four-circle diffractometer'
_diffrn_measurement_method       2\q/\w
_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  0.0415
_diffrn_reflns_av_sigmaI/netI    0.0491
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            7284
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.11
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.128
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.136
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1472
_exptl_crystal_size_max          0.53
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.34
_refine_diff_density_max         0.283
_refine_diff_density_min         -0.292
_refine_ls_extinction_coef       0.0018(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     216
_refine_ls_number_reflns         3642
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0740
_refine_ls_R_factor_gt           0.0481
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0378P)^2^+2.3403P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1031
_refine_ls_wR_factor_ref         0.1158
_reflns_number_gt                2718
_reflns_number_total             3642
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fk2011.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_database_code               2224955
_cod_database_fobs_code          2224955