Synthesis, Crystal Structures, and Solution Behavior of Organomagnesium Derivatives of Alkane-1,4-diide as Well as -1,5-diide
Fischer, Reinald; Suxdorf, Regina; Görls, Helmar; Westerhausen, Matthias; Organometallics 31 (2012) 7579–; doi:10.1021/om300880f

data_4079612
_publ_section_title
;
 Synthesis, Crystal Structures, and Solution Behavior of Organomagnesium
 Derivatives of Alkane-1,4-diide as Well as -1,5-diide
;
_journal_issue                   21
_journal_name_full               Organometallics
_journal_page_first              7579
_journal_paper_doi               10.1021/om300880f
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C20 H48 Li2 Mg N4'
_chemical_formula_sum            'C20 H48 Li2 Mg N4'
_chemical_formula_weight         382.81
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 90.343(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   19.2359(2)
_cell_length_b                   18.1270(3)
_cell_length_c                   14.9726(2)
_cell_measurement_reflns_used    31480
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.48
_cell_volume                     5220.69(12)
_computing_cell_refinement       DENZO
_computing_data_collection       COLLECT
_computing_data_reduction        DENZO
_computing_molecular_graphics    SHELXTL/PC
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      133(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'phi- + omega-scan'
_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  0.0350
_diffrn_reflns_av_sigmaI/netI    0.0373
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            31480
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.48
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    0.974
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1712
_exptl_crystal_size_max          0.06
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.055
_refine_diff_density_min         -1.063
_refine_diff_density_rms         0.064
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     491
_refine_ls_number_reflns         11929
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0968
_refine_ls_R_factor_gt           0.0780
_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^)+(0.0842P)^2^+7.5647P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1906
_refine_ls_wR_factor_ref         0.2063
_reflns_number_gt                9557
_reflns_number_total             11930
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300880f_si_001.cif
_cod_data_source_block           FO4406
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4079612