<i>cis</i>-[1,2-Bis(diphenylarsanyl)ethane-κ^2^<i>As</i>,<i>As</i>']tetracarbonylchromium(0)
Norlidah, M. N.; Azhar, M. Y.; Bin Shawkataly, Omar; Rosli, Mohd Mustaqim; Fun, Hoong-Kun; Acta Crystallographica Section E 67 (2011) m1267–m1268; doi:10.1107/S1600536811032314

data_2231635
_publ_section_title
;
 <i>cis</i>-[1,2-Bis(diphenylarsanyl)ethane-\k^2^<i>As</i>,<i>As</i>']tetracarbonylchromium(0)
;
_journal_coeditor_code           NG5210
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m1267
_journal_page_last               m1268
_journal_paper_doi               10.1107/S1600536811032314
_journal_volume                  67
_journal_year                    2011
_chemical_formula_iupac          '[Cr (C26 H24 As2) (C O)4]'
_chemical_formula_moiety         'C30 H24 As2 Cr O4'
_chemical_formula_sum            'C30 H24 As2 Cr O4'
_chemical_formula_weight         650.33
_chemical_name_systematic
;
<i>cis</i>-[1,2-Bis(diphenylarsanyl)ethane-
\k^2^<i>As</i>,<i>As</i>']tetracarbonylchromium(0)
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   17.0231(4)
_cell_length_b                   12.6200(3)
_cell_length_c                   25.5527(6)
_cell_measurement_reflns_used    9793
_cell_measurement_temperature    100
_cell_measurement_theta_max      31.59
_cell_measurement_theta_min      2.39
_cell_volume                     5489.5(2)
_computing_cell_refinement       'SAINT (Bruker, 2009)'
_computing_data_collection       'APEX2 (Bruker, 2009)'
_computing_data_reduction        'SAINT (Bruker, 2009)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material
;
SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009)
;
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type
;
Bruker SMART APEXII CCD area-detector
;
_diffrn_measurement_method       '\f and \w'
_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  0.0542
_diffrn_reflns_av_sigmaI/netI    0.0314
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            87112
_diffrn_reflns_theta_full        31.86
_diffrn_reflns_theta_max         31.86
_diffrn_reflns_theta_min         1.99
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.843
_exptl_absorpt_correction_T_max  0.8709
_exptl_absorpt_correction_T_min  0.3131
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>SADABS</i>; Bruker, 2009)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.574
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2608
_exptl_crystal_size_max          0.53
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.779
_refine_diff_density_min         -0.501
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     334
_refine_ls_number_reflns         9352
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0443
_refine_ls_R_factor_gt           0.0279
_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^)+(0.0273P)^2^+3.1824P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0581
_refine_ls_wR_factor_ref         0.0645
_reflns_number_gt                7454
_reflns_number_total             9352
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ng5210.cif
_cod_data_source_block           I
_cod_database_code               2231635
_cod_database_fobs_code          2231635