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_4106047
_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            'C15 H33 Cr N2 P2'
_chemical_formula_weight         355.37
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m 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            4
_cell_length_a                   13.5057(6)
_cell_length_b                   16.7235(8)
_cell_length_c                   8.9182(4)
_cell_measurement_reflns_used    7928
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      26.22
_cell_measurement_theta_min      2.44
_cell_volume                     2014.29(16)
_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 0.954
_diffrn_measured_fraction_theta_max 0.954
_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  0.1177
_diffrn_reflns_av_sigmaI/netI    0.0673
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            43166
_diffrn_reflns_theta_full        26.35
_diffrn_reflns_theta_max         26.35
_diffrn_reflns_theta_min         2.44
_exptl_absorpt_coefficient_mu    0.721
_exptl_absorpt_correction_T_max  0.9648
_exptl_absorpt_correction_T_min  0.8633
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker (2003)'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.172
_exptl_crystal_description       needle
_exptl_crystal_F_000             764
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.379
_refine_diff_density_min         -0.527
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     97
_refine_ls_number_reflns         2031
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.086
_refine_ls_R_factor_all          0.1182
_refine_ls_R_factor_gt           0.0741
_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^)+(0.0435P)^2^+1.8469P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1053
_refine_ls_wR_factor_ref         0.1158
_reflns_number_gt                1424
_reflns_number_total             2031
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja201003j_si_001_3.cif
_cod_data_source_block           sg083a
_cod_database_code               4106047