Arylcalcium Iodides in Tetrahydropyran: Solution Stability in Comparison to Aryllithium Reagents
Langer, Jens; Köhler, Mathias; Fischer, Reinald; Dündar, Feyza; Görls, Helmar; Westerhausen, Matthias; Organometallics 31 (2012) 6172–; doi:10.1021/om300508w

data_4079113
_publ_section_title
;
 Arylcalcium Iodides in Tetrahydropyran: Solution Stability in Comparison
 to Aryllithium Reagents
;
_journal_issue                   17
_journal_name_full               Organometallics
_journal_page_first              6172
_journal_paper_doi               10.1021/om300508w
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C26 H44 Br Ca I O4'
_chemical_formula_sum            'C26 H44 Br Ca I O4'
_chemical_formula_weight         667.50
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            4
_cell_length_a                   8.8432(5)
_cell_length_b                   8.9677(5)
_cell_length_c                   37.2212(19)
_cell_measurement_reflns_used    20193
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      27.84
_cell_measurement_theta_min      3.15
_cell_volume                     2951.8(3)
_computing_cell_refinement       DENZO
_computing_data_collection       COLLECT
_computing_data_reduction        DENZO
_computing_molecular_graphics    SHELXTL/PC
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      133(2)
_diffrn_measured_fraction_theta_full 0.964
_diffrn_measured_fraction_theta_max 0.964
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'phi- + omega-scan'
_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  0.0373
_diffrn_reflns_av_sigmaI/netI    0.0544
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       48
_diffrn_reflns_limit_l_min       -48
_diffrn_reflns_number            20193
_diffrn_reflns_theta_full        27.84
_diffrn_reflns_theta_max         27.84
_diffrn_reflns_theta_min         3.15
_exptl_absorpt_coefficient_mu    2.639
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.502
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1360
_exptl_crystal_size_max          0.06
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.04
_refine_diff_density_max         1.032
_refine_diff_density_min         -1.231
_refine_diff_density_rms         0.141
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.11(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.107
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         6801
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.107
_refine_ls_R_factor_all          0.0770
_refine_ls_R_factor_gt           0.0643
_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^)+(0.0568P)^2^+17.1608P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1603
_refine_ls_wR_factor_ref         0.1657
_reflns_number_gt                5787
_reflns_number_total             6801
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300508w_si_001.cif
_cod_data_source_block           FO4590
_cod_database_code               4079113