trans-RhCl(CO)(PPh3)2-Catalyzed Monomeric and Dimeric Cycloisomerization of Propargylic 2,3-Dienoates. Establishment of α,β-Unsaturated δ-Lactone Rings by Cyclometallation
Xuefeng Jiang; Shengming Ma; Journal of the American Chemical Society 129 (2007) 11600–11607; doi:10.1021/ja073582u

data_4109934
_publ_section_title
;
 trans-RhCl(CO)(PPh3)2-Catalyzed Monomeric and Dimeric Cycloisomerization
 of Propargylic 2,3-Dienoates. Establishment of \a,\b-Unsaturated
 \d-Lactone Rings by Cyclometallation
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11600
_journal_page_last               11607
_journal_paper_doi               10.1021/ja073582u
_journal_volume                  129
_journal_year                    2007
_chemical_formula_sum            'C20 H21 Br O3'
_chemical_formula_weight         389.28
_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                 102.317(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.432(2)
_cell_length_b                   14.140(2)
_cell_length_c                   8.4535(12)
_cell_measurement_reflns_used    1940
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      44.221
_cell_measurement_theta_min      5.404
_cell_volume                     1802.2(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.1458
_diffrn_reflns_av_sigmaI/netI    0.1325
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -4
_diffrn_reflns_number            10456
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         1.35
_exptl_absorpt_coefficient_mu    2.295
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.45144
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.435
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.502
_exptl_crystal_size_mid          0.301
_exptl_crystal_size_min          0.090
_refine_diff_density_max         0.798
_refine_diff_density_min         -0.493
_refine_diff_density_rms         0.086
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.823
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     223
_refine_ls_number_reflns         3915
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.823
_refine_ls_R_factor_all          0.1034
_refine_ls_R_factor_gt           0.0581
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0770P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1345
_refine_ls_wR_factor_ref         0.1637
_reflns_number_gt                1939
_reflns_number_total             3915
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja073582usi20070518_114038.cif
_cod_data_source_block           cd2763
_cod_original_cell_volume        1802.1(4)
_cod_database_code               4109934