Lewis acid mediated cyclisations of silylated methylenecyclopropyl hydrazones
Patient, Lee; Berry, Malcolm B.; Coles, Simon J.; Hursthouse, Mike B.; Kilburn, Jeremy D.; Chemical Communications (Cambridge, United Kingdom)  (2003) 2552–2553; doi:10.1039/b306636c

data_7104841
_publ_section_title
;
 Lewis acid mediated cyclisations of silylated methylenecyclopropyl
 hydrazones
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   20
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              2552
_journal_page_last               2553
_journal_paper_doi               10.1039/b306636c
_journal_year                    2003
_chemical_formula_sum            'C19 H30 N2 O2 S Si'
_chemical_formula_weight         378.60
_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                 105.1330(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.8295(3)
_cell_length_b                   11.9683(2)
_cell_length_c                   12.0257(2)
_cell_measurement_reflns_used    17171
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     2060.35(6)
_computing_cell_refinement       'DENZO & COLLECT'
_computing_data_collection
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, 1998)'
_computing_data_reduction        'DENZO & COLLECT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f & \w scans'
_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  0.0644
_diffrn_reflns_av_sigmaI/netI    0.0424
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            26079
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.05
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.230
_exptl_absorpt_correction_T_max  0.9886
_exptl_absorpt_correction_T_min  0.9343
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.221
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.247
_refine_diff_density_min         -0.430
_refine_diff_density_rms         0.056
_refine_ls_extinction_coef       0.0068(12)
_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   1.017
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     236
_refine_ls_number_reflns         4716
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.0525
_refine_ls_R_factor_gt           0.0417
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0479P)^2^+1.0778P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0994
_refine_ls_wR_factor_ref         0.1051
_reflns_number_gt                3954
_reflns_number_total             4716
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b306636c.txt
_cod_data_source_block           13c
_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)/c
_cod_database_code               7104841