(1<i>R</i>,2<i>R</i>)-(‒)-Bis[μ~4~-1-{[1,1-dimethyl-2-(trimethylsilyl)amidino]amino}-2-({1,1-dimethyl-2-[1,1-dimethyl-2-(trimethylsilyl)amidino]amidino}amino)cyclohexane]tetralithium(I)
Hu, Jing-Hua; Tong, Hong-Bo; Li, Jian-Feng; Huang, Shu-Ping; Liu, Dian-Sheng; Acta Crystallographica Section C 60 (2004) m272–m274; doi:10.1107/S0108270104008509

data_2013939
_publ_section_title
(1<i>R</i>,2<i>R</i>)-(--)-Bis[\m~4~-1-{[1,1-dimethyl-2-(trimethylsilyl)amidino]amino}-2-({1,1-dimethyl-2-[1,1-dimethyl-2-(trimethylsilyl)amidino]amidino}amino)cyclohexane]tetralithium(I)
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              m272
_journal_page_last               m274
_journal_paper_doi               10.1107/S0108270104008509
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          '[Li4 (C21 H46 N8 Si2)2]'
_chemical_formula_moiety         'C42 H92 Li4 N14 Si4'
_chemical_formula_sum            'C42 H92 Li4 N14 Si4'
_chemical_formula_weight         961.44
_chemical_name_systematic
;
(1R,2R)-(-)-Bis[\m~4~-1-{[1,1-dimethyl-2-(trimethylsilyl)amidino]amino}-
2-({1,1-dimethyl-2-[1,1-dimethyl-2-(trimethylsilyl)amidino]amidino}amino)
cyclohexane]tetralithium(I)
;
_space_group_IT_number           1
_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
_cell_angle_alpha                100.075(2)
_cell_angle_beta                 104.700(2)
_cell_angle_gamma                105.896(2)
_cell_formula_units_Z            1
_cell_length_a                   9.4773(16)
_cell_length_b                   10.8506(19)
_cell_length_c                   15.437(3)
_cell_measurement_reflns_used    3715
_cell_measurement_temperature    190(2)
_cell_measurement_theta_max      25.876
_cell_measurement_theta_min      2.357
_cell_volume                     1424.9(4)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Please provide reference)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      190(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'Siemens SMART CCD area-detector'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0351
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            6983
_diffrn_reflns_theta_full        25
_diffrn_reflns_theta_max         25
_diffrn_reflns_theta_min         1.41
_diffrn_standards_decay_%        3.86
_exptl_absorpt_coefficient_mu    0.148
_exptl_absorpt_correction_T_max  0.985
_exptl_absorpt_correction_T_min  0.971
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.12
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             524
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.417
_refine_diff_density_min         -0.395
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.144
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     619
_refine_ls_number_reflns         5898
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.143
_refine_ls_R_factor_all          0.0743
_refine_ls_R_factor_gt           0.0657
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.026P)^2^+3.2074P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1465
_refine_ls_wR_factor_ref         0.1561
_reflns_number_gt                5429
_reflns_number_total             5017
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            de1235.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_geom_bond_publ_flag' value 'Yes' changed to 'yes' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_geom_bond_publ_flag' value 'Yes' changed to 'yes' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_geom_angle_publ_flag' value 'Yes' changed to 'yes'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (6
times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P1
_cod_database_code               2013939
_cod_database_fobs_code          2013939