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_1507100
_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            'C18 H28 O4'
_chemical_formula_weight         308.40
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                94.77(3)
_cell_angle_beta                 97.10(3)
_cell_angle_gamma                90.01(3)
_cell_formula_units_Z            4
_cell_length_a                   9.6537(19)
_cell_length_b                   10.664(2)
_cell_length_c                   15.994(3)
_cell_measurement_reflns_used    35166
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1628.2(6)
_computing_cell_refinement       'DENZO (Otwinowski and MInor, 1997)'
_computing_data_collection       'COLLECT (Hooft, 1998)'
_computing_data_reduction        'DENZO, COLLECT, MAXUS (Mackay et al., 1998)'
_computing_molecular_graphics    'CAMERON (Watkin, et al., 1993)'
_computing_publication_material  'WINGX (Farrugia, 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.810
_diffrn_measured_fraction_theta_max 0.810
_diffrn_measurement_device_type  'Bruker Nonius Kappa CCD Area detector'
_diffrn_measurement_method       '\f and \w scans to fill the asymmetric unit'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker Nonius FR591 Roating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1274
_diffrn_reflns_av_sigmaI/netI    0.1677
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            9719
_diffrn_reflns_theta_full        23.26
_diffrn_reflns_theta_max         23.26
_diffrn_reflns_theta_min         3.08
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.9991
_exptl_absorpt_correction_T_min  0.9871
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1997)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.258
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             672
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.898
_refine_diff_density_min         -0.386
_refine_diff_density_rms         0.125
_refine_ls_extinction_coef       0.023(8)
_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   1.229
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     402
_refine_ls_number_reflns         3783
_refine_ls_number_restraints     24
_refine_ls_restrained_S_all      1.227
_refine_ls_R_factor_all          0.2082
_refine_ls_R_factor_gt           0.1287
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3349
_refine_ls_wR_factor_ref         0.3785
_reflns_number_gt                2035
_reflns_number_total             3783
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol049563wsi20040309_093925.cif
_cod_data_source_block           s92
_cod_depositor_comments
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The following automatic conversions were performed:

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

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' 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      P-1
_cod_database_code               1507100