Synthesis of a deca-lithium cage containing an [(RN)2As(µ-NR)As(NR)2]4‒ tetraanion; a homologue of group 15 trianions of the type [E(NR)3]3‒Electronic supplementary information (ESI) available: synthesis and spectroscopic details for 1 and 2. See http://www.rsc.org/suppdata/cc/b2/b202858a/
Bond, Andrew D.; García, Felipe; Jantos, Katja; Lawson, Gavin T.; McPartlin, Mary; Wright, Dominic S.; Chemical Communications  (2002) 1276–; doi:10.1039/b202858a

data_7114301
_publ_section_title
;
 Synthesis of a deca-lithium cage containing an
 [(RN)2As(&#x00B5;-NR)As(NR)2]4-- tetraanion; a homologue of group 15
 trianions of the type [E(NR)3]3--Electronic supplementary information
 (ESI) available: synthesis and spectroscopic details for 1 and 2. See
 http://www.rsc.org/suppdata/cc/b2/b202858a/
;
_journal_issue                   12
_journal_name_full               'Chemical Communications'
_journal_page_first              1276
_journal_paper_doi               10.1039/b202858a
_journal_year                    2002
_chemical_formula_moiety         'C72 H96 As4 Li10 N24 O6 S12, 2(C4 H8 O)'
_chemical_formula_sum            'C80 H112 As4 Li10 N24 O8 S12'
_chemical_formula_weight         2291.74
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 101.483(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.7522(3)
_cell_length_b                   25.1455(8)
_cell_length_c                   15.9021(5)
_cell_measurement_reflns_used    51911
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     5389.0(3)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius B.V. 1998)'
_computing_data_reduction
;
HKL Denzo and Scalepack (Otwinowski & Minor 1997)
;
_computing_molecular_graphics    'XP (Sheldrick 1993)'
_computing_publication_material  'SHELXL-97 (Sheldrick 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick 1997)'
_computing_structure_solution    'SIR-92 (Altomare et al. 1994)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.827
_diffrn_measured_fraction_theta_max 0.827
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'Thin slice \w and \f 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  0.0318
_diffrn_reflns_av_sigmaI/netI    0.0407
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            23523
_diffrn_reflns_theta_full        27.44
_diffrn_reflns_theta_max         27.44
_diffrn_reflns_theta_min         3.57
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.522
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.947
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sortav Blessing (1995)'
_exptl_crystal_colour            pink
_exptl_crystal_density_diffrn    1.412
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2356
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.725
_refine_diff_density_min         -0.462
_refine_diff_density_rms         0.072
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.111
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     628
_refine_ls_number_reflns         10181
_refine_ls_number_restraints     30
_refine_ls_restrained_S_all      1.123
_refine_ls_R_factor_all          0.0591
_refine_ls_R_factor_gt           0.0437
_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^)+(0.0287P)^2^+11.0622P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1032
_refine_ls_wR_factor_ref         0.1099
_reflns_number_gt                8194
_reflns_number_total             10181
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            b202858a.txt
_cod_data_source_block           dw0205
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7114301