A bis(imido)organoarsenate dianion incorporating n-butyllithium
Copsey, May C.; Jeffery, John C.; Leedham, Angela P.; Russell, Christopher A.; Slattery, John M.; Dalton Transactions  (2003) 2103–; doi:10.1039/b304307j

data_7013098
_publ_section_title
;
 A bis(imido)organoarsenate dianion incorporating n-butyllithium
;
_journal_issue                   11
_journal_name_full               'Dalton Transactions'
_journal_page_first              2103
_journal_paper_doi               10.1039/b304307j
_journal_year                    2003
_chemical_formula_sum            'C64 H72 As2 Li6 N4 O4'
_chemical_formula_weight         1150.74
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 95.78(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.996(2)
_cell_length_b                   21.075(4)
_cell_length_c                   12.603(3)
_cell_measurement_temperature    293(2)
_cell_volume                     2905.8(10)
_computing_cell_refinement       SHELXTL
_computing_data_collection       'Bruker smart'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0530
_diffrn_reflns_av_sigmaI/netI    0.0963
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            20448
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.89
_exptl_absorpt_coefficient_mu    1.201
_exptl_absorpt_correction_T_max  0.79
_exptl_absorpt_correction_T_min  0.89
_exptl_absorpt_correction_type   'Empirical sadabs'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.317
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1200
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.785
_refine_diff_density_min         -0.546
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.852
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     371
_refine_ls_number_reflns         6664
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.852
_refine_ls_R_factor_all          0.0712
_refine_ls_R_factor_gt           0.0422
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0218P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0700
_refine_ls_wR_factor_ref         0.0757
_reflns_number_gt                4469
_reflns_number_total             6664
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b304307j.txt
_cod_data_source_block           phenoxym
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7013098