Vinyl Oxidative Coupling as a Synthetic Route to Catalytically Active Monovalent Chromium
Khalid Albahily; Yacoob Shaikh; Elena Sebastiao; Sandro Gambarotta; Ilia Korobkov; Serge I. Gorelsky; Journal of the American Chemical Society 133 (2011) 6388–6395; doi:10.1021/ja201003j

data_4106046
_publ_section_title
;
 Vinyl Oxidative Coupling as a Synthetic Route to Catalytically Active
 Monovalent Chromium
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6388
_journal_page_last               6395
_journal_paper_doi               10.1021/ja201003j
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'C24 H50 Cr Li N4 O P2'
_chemical_formula_weight         531.56
_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                 110.647(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.3492(8)
_cell_length_b                   9.8141(5)
_cell_length_c                   19.5718(10)
_cell_measurement_reflns_used    5443
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      26.68
_cell_measurement_theta_min      2.22
_cell_volume                     2938.6(3)
_computing_cell_refinement       'APEX II, Bruker (2009)'
_computing_data_collection       'APEX II, Bruker (2009)'
_computing_data_reduction        'XPREP, Bruker (2009)'
_computing_molecular_graphics    'SHELXTL, Bruker (2004)'
_computing_publication_material  'SHELXTL, Bruker (2004)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0814
_diffrn_reflns_av_sigmaI/netI    0.0755
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            28818
_diffrn_reflns_theta_full        28.33
_diffrn_reflns_theta_max         28.33
_diffrn_reflns_theta_min         2.15
_exptl_absorpt_coefficient_mu    0.520
_exptl_absorpt_correction_T_max  0.9795
_exptl_absorpt_correction_T_min  0.9168
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker (2003)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.201
_exptl_crystal_description       plate
_exptl_crystal_F_000             1148
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.967
_refine_diff_density_min         -0.614
_refine_diff_density_rms         0.078
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     298
_refine_ls_number_reflns         7172
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0947
_refine_ls_R_factor_gt           0.0524
_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^)+(0.0704P)^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1238
_refine_ls_wR_factor_ref         0.1422
_reflns_number_gt                4663
_reflns_number_total             7172
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja201003j_si_001_2.cif
_cod_data_source_block           sg043
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