Lanthanide co-ordination frameworks of 4,4′-bipyridine-N,N′-dioxide
Long, De-Liang; Blake, Alexander J.; Champness, Neil R.; Schröder, Martin; Chemical Communications  (2000) 1369–; doi:10.1039/b002363i

data_7110946
_publ_section_title
;
 Lanthanide co-ordination frameworks of
 4,4&#x2032;-bipyridine-N,N&#x2032;-dioxide
;
_journal_issue                   15
_journal_name_full               'Chemical Communications'
_journal_page_first              1369
_journal_paper_doi               10.1039/b002363i
_journal_year                    2000
_chemical_formula_sum            'C20 H17 N7 O13.5 Sm'
_chemical_formula_weight         721.76
_chemical_name_systematic        ?
_space_group_IT_number           60
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   'difference Fourier synthesis'
_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                   16.529(4)
_cell_length_b                   17.616(5)
_cell_length_c                   17.244(5)
_cell_measurement_reflns_used    35
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      34
_cell_measurement_theta_min      25
_cell_volume                     5021(2)
_computing_cell_refinement       'Stoe STADI4'
_computing_data_collection       'Stoe STADI4 v1.07 (Stoe & Cie,1997a)'
_computing_data_reduction        'X-RED v1.09 (Stoe & Cie, 1997b)'
_computing_molecular_graphics    'SHELXTL/PC v5.03 (Sheldrick, 1994)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean MoK\a
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Stoe Stadi-4 four-circle'
_diffrn_measurement_method       omega/theta
_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
_diffrn_reflns_av_sigmaI/netI    0.018
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            4919
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         2.60
_diffrn_standards_decay_%        'random variation +/-2.6'
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    2.424
_exptl_absorpt_correction_T_max  0.541
_exptl_absorpt_correction_T_min  0.357
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'X-RED (Stoe & Cie, 1997b)'
_exptl_crystal_colour            'Pale yellow'
_exptl_crystal_density_diffrn    1.907
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2848
_exptl_crystal_size_max          0.54
_exptl_crystal_size_mid          0.51
_exptl_crystal_size_min          0.31
_refine_diff_density_max         1.11
_refine_diff_density_min         -1.12
_refine_diff_density_rms         0.10
_refine_ls_extinction_coef       0.00035(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.165
_refine_ls_hydrogen_treatment    'riding model'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     375
_refine_ls_number_reflns         4919
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.165
_refine_ls_R_factor_all          0.0438
_refine_ls_R_factor_gt           0.0329
_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^)+(0.025P)^2^+17.34P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0686
_refine_ls_wR_factor_ref         0.0772
_reflns_number_gt                4144
_reflns_number_total             4919
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b002363isup1.cif
_cod_data_source_block           SMPYON
_cod_depositor_comments
;
The following automatic conversions were performed:
'_atom_site_symetry_multiplicity' tag replaced with
'_atom_site_symmetry_multiplicity'.

Automatic conversion script
Id: cif_correct_tags 1440 2010-10-19 06:21:57Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Numerical'
changed to 'numerical' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_atom_sites_solution_hydrogens' value 'placed geometrically' was
changed to 'geom'.

Automatic conversion script
Id: cif_fix_values 6452 2018-10-05 10:23:21Z andrius 
;
_cod_original_sg_symbol_H-M      Pbcn
_cod_database_code               7110946