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_7011789
_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            'C38 H50 N4 Na2 O4'
_chemical_formula_weight         672.80
_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                72.477(4)
_cell_angle_beta                 84.631(3)
_cell_angle_gamma                71.255(4)
_cell_formula_units_Z            1
_cell_length_a                   8.1389(16)
_cell_length_b                   10.300(2)
_cell_length_c                   12.692(3)
_cell_measurement_temperature    296(2)
_cell_volume                     960.8(4)
_computing_cell_refinement       'SAINT (Bruker, 1998)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        'SAINT (Bruker, 1998)'
_computing_molecular_graphics    'X-Seed (Barbour, 1999)'
_computing_publication_material  'CIFTAB (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_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  0.0483
_diffrn_reflns_av_sigmaI/netI    0.0477
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            4421
_diffrn_reflns_theta_full        23.28
_diffrn_reflns_theta_max         23.28
_diffrn_reflns_theta_min         2.18
_diffrn_standards_decay_%        0.0
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9758
_exptl_absorpt_correction_T_min  0.9632
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_density_diffrn    1.163
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.26
_refine_diff_density_max         0.437
_refine_diff_density_min         -0.320
_refine_diff_density_rms         0.064
_refine_ls_extinction_coef       0.048(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.996
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         2723
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.996
_refine_ls_R_factor_all          0.0860
_refine_ls_R_factor_gt           0.0699
_refine_ls_shift/su_max          0.023
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1622P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1892
_refine_ls_wR_factor_ref         0.2121
_reflns_number_gt                2031
_reflns_number_total             2723
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b204047f.txt
_cod_data_source_block           compound6.CIF
_cod_original_cell_volume        960.8(3)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7011789