Dinitrogen Complexation and Extent of N\τbN Activation within the Group 6 "End-On-Bridged" Dinuclear Complexes, {(η5-C5Me5)M[N(i-Pr)C(Me)N(i-Pr)]}2(μ-η1:η1-N2) (M = Mo and W)
Philip P. Fontaine; Brendan L. Yonke; Peter Y. Zavalij; Lawrence R. Sita; Journal of the American Chemical Society 132 (2010) 12273–12285; doi:10.1021/ja100469f

data_4102987
_publ_section_title
;
 Dinitrogen Complexation and Extent of N\\tbN Activation within the Group
 6 "End-On-Bridged" Dinuclear Complexes,
 {(\h5-C5Me5)M[N(i-Pr)C(Me)N(i-Pr)]}2(\m-\h1:\h1-N2) (M = Mo and W)
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12273
_journal_page_last               12285
_journal_paper_doi               10.1021/ja100469f
_journal_volume                  132
_journal_year                    2010
_chemical_formula_moiety         'C36 H50 Mo N4'
_chemical_formula_sum            'C36 H50 Mo N4'
_chemical_formula_weight         634.74
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'SHELXL-97 & ZCIF'
_cell_angle_alpha                77.4608(9)
_cell_angle_beta                 78.9713(10)
_cell_angle_gamma                72.9418(9)
_cell_formula_units_Z            2
_cell_length_a                   9.4556(7)
_cell_length_b                   11.3280(8)
_cell_length_c                   16.6763(12)
_cell_measurement_reflns_used    4504
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      26.4
_cell_measurement_theta_min      2.3
_cell_volume                     1651.3(2)
_computing_cell_refinement       Apex2
_computing_data_collection       'Apex2 (Bruker, 2005)'
_computing_data_reduction        Apex2
_computing_molecular_graphics    'XSHEL (Bruker, 2004)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector                 'CCD area detector'
_diffrn_detector_type            'Bruker Smart Apex II'
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_details      600,600,600
_diffrn_measurement_device_type  'three-circle diffractometer'
_diffrn_measurement_method       'omega scans'
_diffrn_measurement_specimen_support 'cactus needle'
_diffrn_orient_matrix_type       standard
_diffrn_orient_matrix_UB_11      0.0426387
_diffrn_orient_matrix_UB_12      -0.0132266
_diffrn_orient_matrix_UB_13      -0.0580388
_diffrn_orient_matrix_UB_21      -0.0119793
_diffrn_orient_matrix_UB_22      -0.0872693
_diffrn_orient_matrix_UB_23      0.0142382
_diffrn_orient_matrix_UB_31      -0.1025156
_diffrn_orient_matrix_UB_32      0.0315304
_diffrn_orient_matrix_UB_33      -0.0165657
_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  0.0267
_diffrn_reflns_av_sigmaI/netI    0.0407
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            12371
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.91
_diffrn_source_current           30
_diffrn_source_voltage           50
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.427
_exptl_absorpt_correction_T_max  0.954
_exptl_absorpt_correction_T_min  0.903
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.277
_exptl_crystal_density_method    not-measured
_exptl_crystal_description       prism
_exptl_crystal_F_000             672
_exptl_crystal_id
;
;
_exptl_crystal_size_max          0.230
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.110
_refine_diff_density_max         0.428
_refine_diff_density_min         -0.437
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     384
_refine_ls_number_reflns         5792
_refine_ls_number_restraints     10
_refine_ls_restrained_S_all      1.002
_refine_ls_R_factor_all          0.0406
_refine_ls_R_factor_gt           0.0325
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.01P)^2^+1.625P], P=(max(Fo^2^,0)+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0627
_refine_ls_wR_factor_ref         0.0648
_reflns_number_gt                5027
_reflns_number_total             5792
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja100469f_si_010.cif
_cod_data_source_block           cmpd_13
_cod_original_cell_volume        1651.3(4)
_cod_database_code               4102987