A <i>cyclo</i>-triarsenic complex of chromium
Chen, W.; Goh, L. Y.; Wong, R. C. S.; Acta Crystallographica Section C 50 (1994) 998–1000; doi:10.1107/S0108270193010650

data_2009890
_publ_section_title
;
 A <i>cyclo</i>-triarsenic complex of chromium
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              998
_journal_page_last               1000
_journal_paper_doi               10.1107/S0108270193010650
_journal_volume                  50
_journal_year                    1994
_chemical_formula_moiety         'C7 H5 As3 Cr1 O2'
_chemical_formula_sum            'C7 H5 As3 Cr O2'
_chemical_formula_weight         397.88
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_atom_type_scat_source           IntTabIV
_cell_angle_alpha                90.
_cell_angle_beta                 100.590(10)
_cell_angle_gamma                90.
_cell_formula_units_Z            4
_cell_length_a                   7.537(2)
_cell_length_b                   10.9920(10)
_cell_length_c                   12.670(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    300
_cell_measurement_theta_max      16
_cell_measurement_theta_min      14
_cell_volume                     1031.8(3)
_diffrn_measurement_device       'Enraf-Nonius CAD-4'
_diffrn_measurement_method       \q-2\q
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            2063
_diffrn_reflns_theta_max         50
_diffrn_standards_decay_%        0.0261
_diffrn_standards_interval_count 400
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    10.58
_exptl_absorpt_correction_T_max  0.9986
_exptl_absorpt_correction_T_min  0.5802
_exptl_absorpt_correction_type   'empirical (North, Phillips & Mathews, 1968)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    2.561
_exptl_crystal_description       plates
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.90
_refine_diff_density_min         -0.96
_refine_ls_goodness_of_fit_obs   0.658
_refine_ls_hydrogen_treatment    noref
_refine_ls_number_parameters     118
_refine_ls_number_reflns         1189
_refine_ls_R_factor_obs          0.038
_refine_ls_shift/esd_max         0.0
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[\s^2^(F) + 0.0004F^2^ + 1]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_obs         0.043
_reflns_number_observed          1189
_reflns_number_total             1804
_reflns_observed_criterion       I>3\s(I)
_cod_data_source_file            oh1050.cif
_cod_data_source_block           oh1050_structure_1_of_1
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value '1/[\s^2^(F) + 0.0004F^2^ + 1]'
was changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w = 1/[\s^2^(F) +
0.0004F^2^ + 1]'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        1031.7(3)
_cod_original_sg_symbol_H-M      'P 21/a'
_cod_original_formula_sum        'C7 H5 As3 Cr1 O2'
_cod_database_code               2009890