Strain-Induced Cleavage of Carbon-Carbon Bonds: Bridge Rupture Reactions of Group 8 Dicarba[2]metallocenophanes
David E. Herbert; Joe B. Gilroy; Anne Staubitz; Mairi F. Haddow; Jeremy N. Harvey; Ian Manners; Journal of the American Chemical Society 132 (2010) 1988–1998; doi:10.1021/ja9087049

data_4101881
_publ_section_title
;
 Strain-Induced Cleavage of Carbon-Carbon Bonds: Bridge Rupture Reactions
 of Group 8 Dicarba[2]metallocenophanes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1988
_journal_page_last               1998
_journal_paper_doi               10.1021/ja9087049
_journal_volume                  132
_journal_year                    2010
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H28 Ru'
_chemical_formula_sum            'C20 H28 Ru'
_chemical_formula_weight         369.49
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           18
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2 2ab'
_symmetry_space_group_name_H-M   'P 21 21 2'
_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            2
_cell_length_a                   10.4394(12)
_cell_length_b                   8.2881(9)
_cell_length_c                   9.7006(11)
_cell_measurement_reflns_used    5303
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.44
_cell_measurement_theta_min      3.78
_cell_volume                     839.32(16)
_computing_cell_refinement       'Bruker Apex II'
_computing_data_collection       'Bruker Apex II'
_computing_data_reduction        'Bruker SAINT'
_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      100(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'CD area detector'
_diffrn_measurement_method       'phi and omega sans'
_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  0.0584
_diffrn_reflns_av_sigmaI/netI    0.0376
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            7375
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         2.87
_exptl_absorpt_coefficient_mu    0.926
_exptl_absorpt_correction_T_max  0.973
_exptl_absorpt_correction_T_min  0.748
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2008/1'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.462
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             384
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.343
_refine_diff_density_min         -0.443
_refine_diff_density_rms         0.078
_refine_ls_abs_structure_details
'Flack H D (1983), Acta Cryst. A39, 876-881, based on 799 Friedel pairs'
_refine_ls_abs_structure_Flack   -0.07(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     140
_refine_ls_number_reflns         1935
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0220
_refine_ls_R_factor_gt           0.0207
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0236P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0465
_refine_ls_wR_factor_ref         0.0486
_reflns_number_gt                1840
_reflns_number_total             1935
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja9087049_si_006.cif
_cod_data_source_block           dh
_cod_database_code               4101881