Solid state structures of dinuclear and trinuclear tungsten and molybdenum complexes with single metal-metal bonds
Barbara Modec; Peter Bukovec; Inorganica Chimica Acta 424 (2015) 226–234; doi:

data_1518910
_publ_section_title
;
 Solid state structures of dinuclear and trinuclear tungsten and
 molybdenum complexes with single metal-metal bonds
;
_journal_name_full               'Inorganica Chimica Acta'
_journal_page_first              226
_journal_page_last               234
_journal_volume                  424
_journal_year                    2015
_chemical_formula_sum            'C24 H22 N4 O12 W2'
_chemical_formula_weight         926.16
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 114.0914(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.9612(3)
_cell_length_b                   8.8332(2)
_cell_length_c                   15.1358(3)
_cell_measurement_temperature    150(2)
_cell_volume                     2680.41(9)
_computing_cell_refinement       'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Nonius Kappa CCD diffractometer'
_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  0.0233
_diffrn_reflns_av_sigmaI/netI    0.0308
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            5654
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.62
_exptl_absorpt_coefficient_mu    8.649
_exptl_absorpt_correction_T_max  0.5827
_exptl_absorpt_correction_T_min  0.4784
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
HKL SCALEPACK (Otwinowski & Minor, 1997)
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.295
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1752
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.07
_refine_diff_density_max         2.961
_refine_diff_density_min         -1.886
_refine_diff_density_rms         0.171
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.126
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         3068
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.126
_refine_ls_R_factor_all          0.0280
_refine_ls_R_factor_gt           0.0260
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0251P)^2^+25.8248P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0667
_refine_ls_wR_factor_ref         0.0677
_reflns_number_gt                2886
_reflns_number_total             3068
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ICA-2015-424-226-234-1.cif
_cod_data_source_block           1
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               1518910