Low-energy contamination of Mo microsource X-ray radiation: analysis and solution of the problem
Macchi, Piero; Bürgi, Hans-Beat; Chimpri, Abita S.; Hauser, Jürg; Gál, Zoltán; Journal of Applied Crystallography 44 (2011) 763–771; doi:10.1107/S0021889811016232

data_2300360
_publ_section_title
;
 Low-energy contamination of Mo microsource X-ray radiation: analysis
 and solution of the problem
;
_journal_coeditor_code           HE5530
_journal_issue                   4
_journal_name_full               'Journal of Applied Crystallography'
_journal_page_first              763
_journal_page_last               771
_journal_paper_doi               10.1107/S0021889811016232
_journal_volume                  44
_journal_year                    2011
_chemical_absolute_configuration unk
_chemical_formula_sum            'C6 H24 N8 Ni O6'
_chemical_formula_weight         363.04
_space_group_IT_number           178
_symmetry_space_group_name_Hall  'P 61 2 (0 0 5)'
_symmetry_space_group_name_H-M   'P 61 2 2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4
_audit_creation_date             2011-03-11T15:57:51-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90.000(5)
_cell_angle_beta                 90.000(5)
_cell_angle_gamma                120.000(5)
_cell_formula_units_Z            6
_cell_length_a                   8.806(5)
_cell_length_b                   8.806(5)
_cell_length_c                   33.147(5)
_cell_measurement_temperature    100(2)
_cell_volume                     2226.0(18)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.951
_diffrn_measured_fraction_theta_max 0.951
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0304
_diffrn_reflns_av_unetI/netI     0.0238
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       44
_diffrn_reflns_limit_l_min       -44
_diffrn_reflns_number            10038
_diffrn_reflns_theta_full        28.86
_diffrn_reflns_theta_max         28.86
_diffrn_reflns_theta_min         2.94
_exptl_absorpt_coefficient_mu    1.349
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.75639
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.625
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1152
_exptl_crystal_size_max          0.181
_exptl_crystal_size_mid          0.125
_exptl_crystal_size_min          0.052
_refine_diff_density_max         0.362
_refine_diff_density_min         -0.537
_refine_diff_density_rms         0.061
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     144
_refine_ls_number_reflns         1808
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.0326
_refine_ls_R_factor_gt           0.031
_refine_ls_shift/su_max          0.189
_refine_ls_shift/su_mean         0.041
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1154
_refine_ls_wR_factor_ref         0.1174
_reflns_number_gt                1739
_reflns_number_total             1808
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            he5530.cif
_cod_data_source_block           ID
_cod_database_code               2300360