Synthesis and structural characterisation of some novel lithium and sodium N,N???-di(para-tolyl)formamidinate complexes
Cole, Marcus L.; Junk, Peter C.; Louis, Lance M.; Journal of the Chemical Society, Dalton Transactions  (2002) 3906–; doi:10.1039/b204047f

data_7011785
_publ_section_title
;
 Synthesis and structural characterisation of some novel lithium and
 sodium N,N???-di(para-tolyl)formamidinate complexes
;
_journal_issue                   20
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              3906
_journal_paper_doi               10.1039/b204047f
_journal_year                    2002
_chemical_formula_sum            'C50 H70 Li2 N4 O5'
_chemical_formula_weight         820.98
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 126.940(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   25.155(4)
_cell_length_b                   12.8620(18)
_cell_length_c                   18.673(3)
_cell_measurement_temperature    223(2)
_cell_volume                     4828.8(13)
_computing_cell_refinement       'SAINT (Bruker, 1998)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        'SAINT (Bruker, 1998)'
_computing_molecular_graphics    'X-Seed / POV-Ray'
_computing_publication_material  'CIFTAB (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD diffractometer'
_diffrn_measurement_method       'omega 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  0.0968
_diffrn_reflns_av_sigmaI/netI    0.1002
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            8688
_diffrn_reflns_theta_full        23.33
_diffrn_reflns_theta_max         23.33
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    0.072
_exptl_absorpt_correction_T_max  0.9893
_exptl_absorpt_correction_T_min  0.9823
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_density_diffrn    1.129
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1776
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.471
_refine_diff_density_min         -0.250
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.936
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     273
_refine_ls_number_reflns         3478
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.936
_refine_ls_R_factor_all          0.1592
_refine_ls_R_factor_gt           0.0882
_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^)+(0.1721P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2290
_refine_ls_wR_factor_ref         0.2906
_reflns_number_gt                1618
_reflns_number_total             3478
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b204047f.txt
_cod_data_source_block           compound2.CIF
_cod_original_cell_volume        4828.9(12)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7011785