Synthesis, reactivity and structural characterization of some heterometallic complexes containing naked arsenic ligands †
Adams, Katherine V.; Choi, Nick; Conole, Gráinne; Davies, John E.; King, Jason D.; Mays, Martin J.; McPartlin, Mary; Raithby, Paul R.; Journal of the Chemical Society, Dalton Transactions  (1999) 3679–; doi:10.1039/a905688b

data_7027702
_publ_section_title
;
 Synthesis, reactivity and structural characterization of some
 heterometallic complexes containing naked arsenic ligands&#x200A;&#x2020;
;
_journal_issue                   21
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              3679
_journal_paper_doi               10.1039/a905688b
_journal_year                    1999
_chemical_formula_sum            'C20 H5 As2 Co Cr2 Mo O15'
_chemical_formula_weight         893.95
_chemical_name_systematic
; 
 ? 
;
_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                 99.77(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.913(4)
_cell_length_b                   19.628(6)
_cell_length_c                   16.694(4)
_cell_measurement_temperature    293(2)
_cell_volume                     2878.2(17)
_computing_cell_refinement       XSCANS
_computing_data_collection       XSCANS
_computing_data_reduction        XSCANS
_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      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Siemens p4'
_diffrn_measurement_method       theta/2theta
_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  0.1017
_diffrn_reflns_av_sigmaI/netI    0.2041
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            4100
_diffrn_reflns_theta_full        21.00
_diffrn_reflns_theta_max         21.00
_diffrn_reflns_theta_min         2.42
_diffrn_standards_decay_%        0.2
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    4.075
_exptl_absorpt_correction_T_max  0.3527
_exptl_absorpt_correction_T_min  0.7707
_exptl_absorpt_correction_type   empirical
_exptl_crystal_density_diffrn    2.063
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1712
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.833
_refine_diff_density_min         -0.658
_refine_diff_density_rms         0.158
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.921
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     358
_refine_ls_number_reflns         3071
_refine_ls_number_restraints     18
_refine_ls_restrained_S_all      0.919
_refine_ls_R_factor_all          0.1815
_refine_ls_R_factor_gt           0.0746
_refine_ls_shift/su_max          1.721
_refine_ls_shift/su_mean         0.206
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0542P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1284
_refine_ls_wR_factor_ref         0.1560
_reflns_number_gt                1486
_reflns_number_total             3071
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            905688bsup1.cif
_cod_data_source_block           ff104
_cod_original_cell_volume        2878.4(16)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7027702