Samarium diiodide coupling of enones: a remarkable cascade sequence.
Howells, Dean M.; Barker, Sarah M.; Watson, Faye C.; Light, Mark E.; Hursthouse, Michael B.; Kilburn, Jeremy D.; Organic letters 6 (2004) 1943–1945; doi:10.1021/ol049563w

data_1507103
_publ_section_title
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 Samarium diiodide coupling of enones: a remarkable cascade sequence.
;
_journal_issue                   12
_journal_name_full               'Organic letters'
_journal_page_first              1943
_journal_page_last               1945
_journal_paper_doi               10.1021/ol049563w
_journal_volume                  6
_journal_year                    2004
_chemical_formula_sum            'C12 H24 O2'
_chemical_formula_weight         200.31
_chemical_name_systematic
;
 ?
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_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 91.4280(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   10.8507(2)
_cell_length_b                   14.8374(3)
_cell_length_c                   14.9670(3)
_cell_measurement_reflns_used    5392
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      2.910
_cell_volume                     2408.88(8)
_computing_cell_refinement
' DENZO (Otwinowski & Minor, 1997) and COLLECT (Hooft, 1998)'
_computing_data_collection       ' DENZO (Otwinowski and Minor, 1997)'
_computing_data_reduction
' DENZO (Otwinowski & Minor, 1997) and COLLECT (Hooft, 1998)'
_computing_molecular_graphics    'PLATON (Spek, 1990)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997b)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Nonius KappaCCD Area Detector'
_diffrn_measurement_method       '\f and \w scans to fill Asymmetric unit'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0457
_diffrn_reflns_av_sigmaI/netI    0.0425
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19885
_diffrn_reflns_theta_full        27.52
_diffrn_reflns_theta_max         27.52
_diffrn_reflns_theta_min         3.55
_exptl_absorpt_coefficient_mu    0.072
_exptl_absorpt_correction_T_max  0.9814
_exptl_absorpt_correction_T_min  0.9730
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV Blessing (1997)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.105
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.26
_refine_diff_density_max         0.308
_refine_diff_density_min         -0.198
_refine_diff_density_rms         0.040
_refine_ls_extinction_coef       0.014(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     290
_refine_ls_number_reflns         5502
_refine_ls_number_restraints     8
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0584
_refine_ls_R_factor_gt           0.0459
_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^)+(0.0437P)^2^+0.9461P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1068
_refine_ls_wR_factor_ref         0.1135
_reflns_number_gt                4576
_reflns_number_total             5502
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol049563wsi20040324_035242.cif
_cod_data_source_block           s92
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1507103