Experimental and Computational Studies of Binding of Dinitrogen, Nitriles, Azides, Diazoalkanes, Pyridine, and Pyrazines to M(PR3)2(CO)3 (M = Mo, W; R = Me,iPr).
Patrick Achord; Etsuko Fujita; James T. Muckerman; Brian Scott; George C. Fortman; Manuel Temprado; Xiaochen Cai; Burjor Captain; Derek Isrow; John J. Weir; James Eric McDonough; Carl D. Hoff; Inorganic Chemistry 48 (2009) 7891–7904; doi:10.1021/ic900764e

data_4302945
_publ_section_title
;
Experimental and Computational Studies of Binding of Dinitrogen, Nitriles,
Azides, Diazoalkanes, Pyridine, and Pyrazines to M(PR3)2(CO)3 (M = Mo, W; R
= Me,iPr).
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7891
_journal_page_last               7904
_journal_paper_doi               10.1021/ic900764e
_journal_volume                  48
_journal_year                    2009
_chemical_formula_sum            'C32 H57 N O3 P2 W'
_chemical_formula_weight         749.58
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 110.337(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   20.191(6)
_cell_length_b                   13.287(4)
_cell_length_c                   27.577(8)
_cell_measurement_temperature    141(2)
_cell_volume                     6937(4)
_computing_cell_refinement       'SAINT 4.05 (Bruker, 1996)'
_computing_data_collection       'SMART 4.210 (Bruker, 1996)'
_computing_data_reduction        'SAINT 4.05 (Bruker, 1996)'
_computing_molecular_graphics    'SHELXTL 6.10 (Bruker, 2001)'
_computing_publication_material  'SHELXTL 6.10 (Bruker, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      141(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker SMART 1k CCD'
_diffrn_measurement_method       '\f 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  0.0324
_diffrn_reflns_av_sigmaI/netI    0.0344
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            31280
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.41
_diffrn_reflns_theta_min         1.09
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.453
_exptl_absorpt_correction_T_max  0.7240
_exptl_absorpt_correction_T_min  0.4448
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2.10 (Sheldrick, 2001)'
_exptl_crystal_colour            yelow
_exptl_crystal_density_diffrn    1.435
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3072
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.555
_refine_diff_density_min         -0.939
_refine_diff_density_rms         0.118
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.717
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     726
_refine_ls_number_reflns         12671
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.717
_refine_ls_R_factor_all          0.0617
_refine_ls_R_factor_gt           0.0461
_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^)+(0.0240P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0860
_refine_ls_wR_factor_ref         0.0882
_reflns_number_gt                10420
_reflns_number_total             12671
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic900764e_si_002_3.cif
_cod_data_source_block           WkAdNC
_cod_original_cell_volume        6937(3)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4302945