Preparation of 2-trialkylsiloxy- substituted 1,3-dienes and their diels-alder/cross-coupling reactions.
Pidaparthi, Ramakrishna R.; Welker, Mark E.; Day, Cynthia S.; Wright, Marcus W.; Organic letters 9 (2007) 1623–1626; doi:10.1021/ol070089e

data_1505330
_publ_section_title
;
 Preparation of 2-trialkylsiloxy- substituted 1,3-dienes and their
 diels-alder/cross-coupling reactions.
;
_journal_issue                   9
_journal_name_full               'Organic letters'
_journal_page_first              1623
_journal_page_last               1626
_journal_paper_doi               10.1021/ol070089e
_journal_volume                  9
_journal_year                    2007
_chemical_formula_sum            'C24 H29 K O6 Si'
_chemical_formula_weight         480.66
_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           SHELXTL-PC
_cell_angle_alpha                90.00
_cell_angle_beta                 108.108(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.445(2)
_cell_length_b                   15.623(3)
_cell_length_c                   13.259(2)
_cell_measurement_reflns_used    1074
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      18.239
_cell_measurement_theta_min      3.925
_cell_volume                     2450.2(7)
_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  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker APEX 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  0.0950
_diffrn_reflns_av_sigmaI/netI    0.0828
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            16300
_diffrn_reflns_theta_full        24.15
_diffrn_reflns_theta_max         24.15
_diffrn_reflns_theta_min         4.09
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.302
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 Data were corrected for absorption effects using the 
 multi-scan technique (SADABS).  The ratio of minimum
 to maximum apparent transmission: 0.760045.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.303
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1016
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.245
_refine_diff_density_min         -0.222
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     341
_refine_ls_number_reflns         3879
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.1187
_refine_ls_R_factor_gt           0.0709
_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^)+(0.0629P)^2^+0.4143P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1337
_refine_ls_wR_factor_ref         0.1525
_reflns_number_gt                2495
_reflns_number_total             3879
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol070089erom20070111_052955.cif
_cod_data_source_block           a11k2f
_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        2450.3(7)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1505330