<i>catena</i>-Poly[[bis(μ-2,6-dimethylpiperidinido-<i>N</i>:<i>N</i>)dilithium]-μ-(<i>N</i>,<i>N</i>,<i>N</i>',<i>N</i>'-tetramethylethylenediamine-<i>N</i>:<i>N</i>')]
Clegg, William; Horsburgh, Lynne; Couper, Scott A.; Mulvey, Robert E.; Acta Crystallographica Section C 55 (1999) 867–869; doi:10.1107/S0108270199001171

data_2008583
_publ_section_title
<i>catena</i>-Poly[[bis(\m-2,6-dimethylpiperidinido-<i>N</i>:<i>N</i>)dilithium]-\m-(<i>N</i>,<i>N</i>,<i>N</i>',<i>N</i>'-tetramethylethylenediamine-<i>N</i>:<i>N</i>')]
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              867
_journal_page_last               869
_journal_paper_doi               10.1107/S0108270199001171
_journal_volume                  55
_journal_year                    1999
_chemical_formula_iupac          'Li2 (C6 H16 N2) (C7 H14 N)2'
_chemical_formula_sum            'C20 H44 Li2 N4'
_chemical_formula_weight         354.47
_chemical_name_systematic
;
catena-poly[[bis[\m-(2,6-dimethylpiperidinido)-N:N]dilithium]-\m-(N,N,N',N'-
tetramethylethylenediamine-N:N')]
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_audit_creation_method           SHELXL97
_cell_angle_alpha                108.26(4)
_cell_angle_beta                 112.63(3)
_cell_angle_gamma                91.41(3)
_cell_formula_units_Z            1
_cell_length_a                   7.904(5)
_cell_length_b                   8.899(6)
_cell_length_c                   9.335(7)
_cell_measurement_reflns_used    30
_cell_measurement_temperature    160(2)
_cell_measurement_theta_max      12.0
_cell_measurement_theta_min      8.52
_cell_volume                     567.6(7)
_computing_cell_refinement       DIF4
_computing_data_collection       'DIF4 (Stoe & Cie, 1988)'
_computing_data_reduction        'local programs'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  'SHELXTL and local programs'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1994)'
_diffrn_ambient_temperature      160(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type
'Stoe-Siemens diffractometer with Cryostream cooler (Cosier & Glazer, 1986)'
_diffrn_measurement_method       '\w/\q 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  0.026
_diffrn_reflns_av_sigmaI/netI    0.029
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            4012
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.52
_diffrn_standards_decay_%        2.9
_diffrn_standards_interval_time  60
_diffrn_standards_number         5
_exptl_absorpt_coefficient_mu    0.060
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.037
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             198
_exptl_crystal_size_max          1.15
_exptl_crystal_size_mid          0.85
_exptl_crystal_size_min          0.65
_refine_diff_density_max         0.199
_refine_diff_density_min         -0.181
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     122
_refine_ls_number_reflns         2004
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.050
_refine_ls_R_factor_gt           0.038
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0552P)^2^+0.1264P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.109
_reflns_number_gt                1631
_reflns_number_total             2004
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ln1078.cif
_cod_data_source_block           rem59
_cod_database_code               2008583
_cod_database_fobs_code          2008583