Homologous families of chloride-rich 4,4′-bipyridinium salt structures
Dolling, Ben; Gillon, Amy L.; Orpen, A. Guy; Starbuck, Jonathan; Wang, Xi-Meng; Chemical Communications  (2001) 567–; doi:10.1039/b009467f

data_7114914
_publ_section_title
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 Homologous families of chloride-rich 4,4&#x2032;-bipyridinium salt
 structures
;
_journal_issue                   6
_journal_name_full               'Chemical Communications'
_journal_page_first              567
_journal_paper_doi               10.1039/b009467f
_journal_year                    2001
_chemical_formula_sum            'C10 H10 Cl5 Fe N2'
_chemical_formula_weight         391.30
_chemical_name_systematic
; 
? 
;
_space_group_IT_number           40
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'A 2 -2a'
_symmetry_space_group_name_H-M   'A m a 2'
_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            4
_cell_length_a                   16.651(2)
_cell_length_b                   11.6816(15)
_cell_length_c                   7.2764(10)
_cell_measurement_reflns_used    42
_cell_measurement_temperature    173(2)
_cell_volume                     1415.3(3)
_computing_cell_refinement       'SMART (Siemens, 1995b)'
_computing_data_collection       'SMART (Siemens, 1995b)'
_computing_data_reduction        'SMART (Siemens, 1995b)'
_computing_molecular_graphics    'SHELXTL (Siemens, 1995a)'
_computing_publication_material  'SHELXTL (Siemens, 1995a)'
_computing_structure_refinement  'SHELXTL (Siemens, 1995a)'
_computing_structure_solution    'SHELXTL (Siemens, 1995a)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Siemens SMART CCD diffractometer'
_diffrn_measurement_method       '\w rotation with narrow frames'
_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  0.0374
_diffrn_reflns_av_sigmaI/netI    0.0458
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            4523
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.45
_diffrn_standards_decay_%        none
_exptl_absorpt_coefficient_mu    1.990
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.869677
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.836
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             780
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.317
_refine_diff_density_min         -0.305
_refine_diff_density_rms         0.068
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.08(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     90
_refine_ls_number_reflns         1671
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0395
_refine_ls_R_factor_gt           0.0286
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0222P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0615
_refine_ls_wR_factor_ref         0.0651
_reflns_number_gt                1408
_reflns_number_total             1671
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b009467f.txt
_cod_data_source_block           4nitshil
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'Not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      Ama2
_cod_database_code               7114914