Amidinate–carboxylate complexes of dimolybdenum and ditungsten: M2(O2CR)2((NiPr)2CR′)2. Preparations, molecular and electronic structures and reactions
Brown, Douglas J.; Chisholm, Malcolm H.; Gallucci, Judith C.; Dalton Transactions  (2008) 1615–1624; doi:10.1039/b715258b

data_7003288
_publ_section_title
;
 Amidinate--carboxylate complexes of dimolybdenum and ditungsten:
 M2(O2CR)2((NiPr)2CR&#x2032;)2. Preparations, molecular and electronic
 structures and reactions
;
_journal_issue                   12
_journal_name_full               'Dalton Transactions'
_journal_page_first              1615
_journal_page_last               1624
_journal_paper_doi               10.1039/b715258b
_journal_year                    2008
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C20 H40 Mo2 N4 O4'
_chemical_formula_sum            'C20 H40 Mo2 N4 O4'
_chemical_formula_weight         592.44
_chemical_name_common            'Chisholm 1328'
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.2
_audit_creation_date             2005-04-18T14:13:51-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                68.840(4)
_cell_angle_beta                 77.080(4)
_cell_angle_gamma                65.805(5)
_cell_formula_units_Z            1
_cell_length_a                   8.3023(10)
_cell_length_b                   9.0596(10)
_cell_length_c                   9.5252(10)
_cell_measurement_reflns_used    2756
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      2.037
_cell_measurement_wavelength     0.71073
_cell_volume                     607.03(12)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_orient_matrix_type       'by Nonius Collect from scalepack cell'
_diffrn_orient_matrix_UB_11      0.101108
_diffrn_orient_matrix_UB_12      0.179546E-1
_diffrn_orient_matrix_UB_13      -0.748511E-1
_diffrn_orient_matrix_UB_21      -0.206694E-1
_diffrn_orient_matrix_UB_22      -0.606251E-1
_diffrn_orient_matrix_UB_23      -0.596446E-1
_diffrn_orient_matrix_UB_31      -0.832203E-1
_diffrn_orient_matrix_UB_32      0.110115
_diffrn_orient_matrix_UB_33      -0.601158E-1
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.027
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            17872
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         2.99
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    1.065
_exptl_absorpt_correction_T_max  0.817
_exptl_absorpt_correction_T_min  0.724
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'HKL Scalepack (Otwinowski & Minor 1997)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.621
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rectangular block'
_exptl_crystal_F_000             304
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.345
_refine_diff_density_min         -0.436
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         2771
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.018
_refine_ls_R_factor_gt           0.0169
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0155P)^2^+0.4632P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0432
_refine_ls_wR_factor_ref         0.0436
_reflns_number_gt                2673
_reflns_number_total             2771
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b715258b.txt
_cod_data_source_block           Chisholm1328
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7003288