Controlling cis/trans-selectivity in intramolecular Diels–Alder reactions of benzo-tethered, ester linked 1,3,9-decatrienes
Pearson, Emma L.; Willis, Anthony C.; Sherburn, Michael S.; Paddon-Row, Michael N.; Organic & Biomolecular Chemistry 6 (2008) 513–522; doi:10.1039/b716910h

data_7150832
_publ_section_title
;
 Controlling cis/trans-selectivity in intramolecular Diels--Alder
 reactions of benzo-tethered, ester linked 1,3,9-decatrienes
;
_journal_issue                   3
_journal_name_full               'Organic &amp;  Biomolecular Chemistry'
_journal_page_first              513
_journal_page_last               522
_journal_paper_doi               10.1039/b716910h
_journal_volume                  6
_journal_year                    2008
_chemical_compound_source
;
?
;
_chemical_formula_moiety         ' C18 H22 O4 Si '
_chemical_formula_sum            'C18 H22 O4 Si'
_chemical_formula_weight         330.46
_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
_audit_creation_date             05-24-01
_audit_creation_method           CRYSTALS_ver_12-03-99
_audit_update_record
;
2005-01-24 - Report on  C18 H22 O4 Si 
             by Anthony C. Willis
             for Craig Turner and Mick Sherburn
2005-01-24 - passes checkcif tests with minor warnings
;
_cell_angle_alpha                86.4869(12)
_cell_angle_beta                 66.0202(13)
_cell_angle_gamma                79.5571(15)
_cell_formula_units_Z            2
_cell_length_a                   9.3794(2)
_cell_length_b                   9.9026(2)
_cell_length_c                   10.4159(2)
_cell_measurement_reflns_used    12376
_cell_measurement_temperature    200
_cell_measurement_theta_max      27
_cell_measurement_theta_min      3
_cell_volume                     869.21(3)
_computing_cell_refinement
; 
 Denzo/Scalepack (Otwinowski & Minor, 1996) 
;
_computing_data_collection
; 
 COLLECT (Nonius BV, 1997) 
;
_computing_data_reduction
; 
 Denzo/Scalepack (Otwinowski & Minor, 1996) 
;
_computing_molecular_graphics
; 
ORTEP-II (Johnson 1976) in teXsan (MSC, 1992-1997)
;
_computing_publication_material
; 
 CRYSTALS (Watkin et al 2003) 
;
_computing_structure_refinement
; 
 CRYSTALS (Watkin et al 2003) 
;
_computing_structure_solution
; 
 SIR92 (Altomare et al, 1994) 
;
_diffrn_ambient_temperature      200
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type
; 
Nonius Kappa CCD 
;
_diffrn_measurement_method       ' \f and \w scans with CCD '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.04
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            19510
_diffrn_reflns_theta_full        27.480
_diffrn_reflns_theta_max         27.5
_diffrn_reflns_theta_min         2.910
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.152
_exptl_absorpt_correction_T_max  0.987
_exptl_absorpt_correction_T_min  0.951
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
via Gaussian method (Coppens, 1970) implemented in maXus (2000)
;
_exptl_crystal_colour            ' colourless '
_exptl_crystal_density_diffrn    1.263
_exptl_crystal_density_meas      ?
_exptl_crystal_description       ' plate '
_exptl_crystal_F_000             352
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.24
_refine_diff_density_min         -0.21
_refine_ls_extinction_coef       280(50)
_refine_ls_extinction_method     'Larson 1970 Crystallographic Computing eq 22'
_refine_ls_goodness_of_fit_ref   1.0878
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         3031
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0462
_refine_ls_R_factor_gt           0.0353
_refine_ls_shift/su_max          0.000272
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
 Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982) 
 [weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)] 
 where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax 
 Method = Robust Weighting (Prince, 1982) 
 W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^ 
 A~i~ are: 
 1.67 -0.466 1.78 -0.215 0.525 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0392
_refine_ls_wR_factor_gt          0.0371
_refine_ls_wR_factor_ref         0.0371
_reflns_limit_h_max              12
_reflns_limit_h_min              -10
_reflns_limit_k_max              12
_reflns_limit_k_min              -12
_reflns_limit_l_max              13
_reflns_limit_l_min              0
_reflns_number_gt                3031
_reflns_number_total             3968
_reflns_threshold_expression     I>3.00u(I)
_cod_data_source_file            b716910h.txt
_cod_data_source_block           she0504
_cod_depositor_comments
;
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.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'P -1 '
_cod_original_formula_sum        ' C18 H22 O4 Si '
_cod_database_code               7150832