Sequential One-Pot Bimetallic Ir(III) / Pd(0) Catalysed Mono- / Bis-Alkylation and Spirocyclisation Processes of 1,3-Dimethylbarbituric Acid and Allenes
R.E.Grigg; V.Sridharana; A.M.Derrick; A.Keep; C.Kilner; Christian Lofberg; Chemical Communications  (2006) –; doi:10.1039/b614098j

data_7101606
_publ_section_title
;
Sequential One-Pot Bimetallic Ir(III) / Pd(0)
Catalysed Mono- / Bis-Alkylation and Spirocyclisation Processes of
1,3-Dimethylbarbituric Acid and Allenes
;
_journal_issue                   48
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/b614098j
_journal_year                    2006
_chemical_formula_moiety         'C22 H26 N2 O3'
_chemical_formula_sum            'C22 H26 N2 O3'
_chemical_formula_weight         366.45
_chemical_name_systematic
;
?
;
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   15.0482(16)
_cell_length_b                   16.1047(16)
_cell_length_c                   32.609(4)
_cell_measurement_reflns_used    6524
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      22.33
_cell_measurement_theta_min      2.50
_cell_volume                     7902.7(15)
_computing_cell_refinement
;
APEX 2 software, Bruker Nonius 2004
;
_computing_data_collection
;
APEX 2 software, Bruker Nonius 2004
;
_computing_data_reduction
;
SAINT - Bruker Integration program embedded in
APEX 2 software, Bruker Nonius 2004
;
_computing_molecular_graphics    'ORTEP-III Version 1.08 (Farrugia, 2005)'
_computing_publication_material
;
enCIFer: A program for viewing, editing and visualising CIFs.
F. H. Allen, O. Johnson, G. P. Shields, B. R. Smith, M. Towler,
J. Applied Cryst., 37, 331-334, 2004
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXTL version 5.1(Sheldrick, 2002)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean
;
120 microns
;
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type
;
Mach3 kappa-type 4-circle goniostat.
;
_diffrn_measurement_method       'rotation images'
_diffrn_radiation_detector       'ApexII camera'
_diffrn_radiation_monochromator
;
graphite model mounted in "parallel" mode
;
_diffrn_radiation_source
;
Bruker Nonius FR591 rotating anode generator
;
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0740
_diffrn_reflns_av_sigmaI/netI    0.0345
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            125890
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         2.53
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.232
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             3136
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.261
_refine_diff_density_min         -0.186
_refine_diff_density_rms         0.041
_refine_ls_extinction_coef       0.00020(6)
_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   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     491
_refine_ls_number_reflns         7760
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0824
_refine_ls_R_factor_gt           0.0434
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0403P)^2^+4.0377P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0921
_refine_ls_wR_factor_ref         0.1138
_reflns_number_gt                5139
_reflns_number_total             7760
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b614098j.txt
_cod_database_code               7101606