Exploiting Sm(ii) and Sm(iii) in SmI(2)-initiated reaction cascades: application in a tag removal-cyclisation approach to spirooxindole scaffolds.
Coote, Susannah C.; Quenum, Seidjolo; Procter, David J.; Organic & biomolecular chemistry 9 (2011) 5104–5108; doi:10.1039/c1ob05710c

data_7151962
_publ_section_title
;
 Exploiting Sm(ii) and Sm(iii) in SmI(2)-initiated reaction cascades:
 application in a tag removal-cyclisation approach to spirooxindole
 scaffolds.
;
_journal_issue                   14
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5104
_journal_page_last               5108
_journal_paper_doi               10.1039/c1ob05710c
_journal_volume                  9
_journal_year                    2011
_chemical_formula_sum            'C25 H27 Br N2 O'
_chemical_formula_weight         451.40
_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                 101.368(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.197(2)
_cell_length_b                   22.507(6)
_cell_length_c                   12.208(3)
_cell_measurement_reflns_used    914
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.30
_cell_measurement_theta_min      2.48
_cell_volume                     2208.1(10)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0303
_diffrn_reflns_av_sigmaI/netI    0.0300
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            16610
_diffrn_reflns_theta_full        26.41
_diffrn_reflns_theta_max         26.41
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    1.880
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.693
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.358
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             936
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.328
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     282
_refine_ls_number_reflns         4505
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.099
_refine_ls_R_factor_all          0.0461
_refine_ls_R_factor_gt           0.0354
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0316P)^2^+1.5037P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0782
_refine_ls_wR_factor_ref         0.0817
_reflns_number_gt                3808
_reflns_number_total             4505
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1ob05710c.txt
_cod_data_source_block           z:\s3219\work\s3219abs
_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_cell_volume        2208.0(10)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7151962