1,3-Bis(N,N,N',N'-tetramethylguanidino)propane: synthesis, characterization and bonding properties of the first bidentate, peralkylated guanidine ligand †
Pohl, Siegfried; Harmjanz, Michael; Schneider, Jörg; Saak, Wolfgang; Henkel, Gerald; Journal of the Chemical Society, Dalton Transactions  (2000) 3473–; doi:10.1039/b002554m

data_7009665
_publ_section_title
;
 1,3-Bis(N,N,N',N'-tetramethylguanidino)propane: synthesis,
 characterization and bonding properties of the first bidentate,
 peralkylated guanidine ligand&#x200A;&#x2020;
;
_journal_issue                   19
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              3473
_journal_paper_doi               10.1039/b002554m
_journal_year                    2000
_chemical_formula_sum            'C13 H32 Cl2 N6'
_chemical_formula_weight         343.35
_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                 128.53(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   30.892(19)
_cell_length_b                   7.897(4)
_cell_length_c                   19.834(11)
_cell_measurement_reflns_used    18
_cell_measurement_temperature    150
_cell_measurement_theta_max      20
_cell_measurement_theta_min      10
_cell_volume                     3785(4)
_computing_cell_refinement       'P3 (Siemens, 1991)'
_computing_data_collection       'P3 (Siemens, 1991)'
_computing_data_reduction        'P3 (Siemens, 1991)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-90 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Siemens P4RA'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus rotating anode tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0203
_diffrn_reflns_av_sigmaI/netI    0.0431
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -39
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            4644
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         2.05
_diffrn_standards_interval_count 99
_diffrn_standards_number         1
_exptl_absorpt_coefficient_mu    0.347
_exptl_absorpt_correction_T_max  0.889
_exptl_absorpt_correction_T_min  0.812
_exptl_absorpt_correction_type   psi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.205
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1488
_exptl_crystal_size_max          0.65
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.277
_refine_diff_density_min         -0.232
_refine_diff_density_rms         0.051
_refine_ls_extinction_coef       0.00054(17)
_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   1.033
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     194
_refine_ls_number_reflns         4131
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0640
_refine_ls_R_factor_gt           0.0409
_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^)+(0.0340P)^2^+3.5931P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0846
_refine_ls_wR_factor_ref         0.0933
_reflns_number_gt                3152
_reflns_number_total             4131
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b002554m.txt
_cod_data_source_block           (1b)
_cod_original_sg_symbol_H-M      'C2 /c'
_cod_database_code               7009665