β-Lactams or γ-lactams by 4-exo-trig or 5-endo-trig anionic cyclisation of lithiated acrylamide derivatives
Clayden, Jonathan; Watson, David W.; Helliwell, Madeleine; Chambers, Mark; Chemical Communications (Cambridge, United Kingdom)  (2003) 2582–2583; doi:10.1039/b308029c

data_7104848
_publ_section_title
;
 \b-Lactams or \g-lactams by 4-exo-trig or 5-endo-trig anionic
 cyclisation of lithiated acrylamide derivatives
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   20
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              2582
_journal_page_last               2583
_journal_paper_doi               10.1039/b308029c
_journal_year                    2003
_chemical_formula_sum            'C29 H35 N O2 Si'
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_atom_sites_solution_secondary   difmap
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_cell_angle_beta                 110.399(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
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_cell_length_b                   14.7339(18)
_cell_length_c                   13.9497(16)
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_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 0.942
_diffrn_measured_fraction_theta_max 0.942
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
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_diffrn_radiation_type           MoK\a
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_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            15456
_diffrn_reflns_theta_full        28.31
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    0.116
_exptl_absorpt_correction_T_max  0.9885
_exptl_absorpt_correction_T_min  0.9660
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.175
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             984
_exptl_crystal_size_max          0.30
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_refine_ls_number_parameters     304
_refine_ls_number_reflns         6067
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_refine_ls_R_factor_all          0.0740
_refine_ls_R_factor_gt           0.0523
_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^)+(0.0425P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0988
_refine_ls_wR_factor_ref         0.1060
_reflns_number_gt                4551
_reflns_number_total             6067
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b308029c.txt
_cod_data_source_block           s1127m
_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_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7104848