Preparation, Characterization, and Theoretical Analysis of Group 14 Element(I) Dimers: A Case Study of Magnesium(I) Compounds as Reducing Agents in Inorganic Synthesis
Cameron Jones; Simon J. Bonyhady; Nicole Holzmann; Gernot Frenking; Andreas Stasch; Inorganic Chemistry 50 (2011) 12315–12325; doi:10.1021/ic200682p

data_4327076
_publ_section_title
;
 Preparation, Characterization, and Theoretical Analysis of Group 14
 Element(I) Dimers: A Case Study of Magnesium(I) Compounds as Reducing
 Agents in Inorganic Synthesis
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              12315
_journal_page_last               12325
_journal_paper_doi               10.1021/ic200682p
_journal_volume                  50
_journal_year                    2011
_chemical_formula_sum            'C70 H94 Li2 N4'
_chemical_formula_weight         1005.37
_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
_cell_angle_alpha                87.85(3)
_cell_angle_beta                 76.53(3)
_cell_angle_gamma                65.22(3)
_cell_formula_units_Z            2
_cell_length_a                   11.698(2)
_cell_length_b                   13.099(3)
_cell_length_c                   24.937(5)
_cell_measurement_temperature    173(2)
_cell_volume                     3366.0(15)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.972
_diffrn_measured_fraction_theta_max 0.972
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_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  0.0333
_diffrn_reflns_av_sigmaI/netI    0.0827
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            17297
_diffrn_reflns_theta_full        24.98
_diffrn_reflns_theta_max         24.98
_diffrn_reflns_theta_min         2.96
_exptl_absorpt_coefficient_mu    0.056
_exptl_absorpt_correction_T_max  0.994
_exptl_absorpt_correction_T_min  0.980
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sortav (Blessing, 1995)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    0.992
_exptl_crystal_description       block
_exptl_crystal_F_000             1096
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.469
_refine_diff_density_min         -0.244
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     769
_refine_ls_number_reflns         11494
_refine_ls_number_restraints     84
_refine_ls_restrained_S_all      1.085
_refine_ls_R_factor_all          0.1439
_refine_ls_R_factor_gt           0.0792
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1318P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2170
_refine_ls_wR_factor_ref         0.2435
_reflns_number_gt                6195
_reflns_number_total             11494
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic200682p_si_001_10.cif
_cod_data_source_block           ButisoLi
_cod_original_cell_volume        3365.9(12)
_cod_database_code               4327076