Getting the right answer to a key question concerning molecular wires
Albert Cotton, F.; Daniels, Lee M.; Murillo, Carlos A.; Wang, Xiaoping; Murillo, Carlos A.; Chemical Communications  (1999) 2461–; doi:10.1039/a906727b

data_7115216
_publ_section_title
;
 Getting the right answer to a key question concerning molecular wires
;
_journal_issue                   24
_journal_name_full               'Chemical Communications'
_journal_page_first              2461
_journal_paper_doi               10.1039/a906727b
_journal_year                    1999
_chemical_compound_source        synthesis
_chemical_formula_structural     Cr5(tpda)4Cl2.2Et2O.4CHCl3
_chemical_formula_sum            'C72 H68 Cl14 Cr5 N20 O2'
_chemical_formula_weight         2001.76
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 122.780(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   28.4170(10)
_cell_length_b                   13.9755(2)
_cell_length_c                   24.8327(7)
_cell_measurement_reflns_used    250
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      20.9
_cell_measurement_theta_min      9.05
_cell_volume                     8291.6(5)
_computing_cell_refinement       MADNES
_computing_data_collection       MADNES
_computing_data_reduction        PROCOR
_computing_molecular_graphics    'XP (Siemens, 1990)'
_computing_publication_material  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measurement_device       'Nonius FAST area detector'
_diffrn_measurement_method       'Ellipsoid-mask fitting'
_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  0.0589
_diffrn_reflns_av_sigmaI/netI    0.0396
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            22906
_diffrn_reflns_theta_max         25.39
_diffrn_reflns_theta_min         2.17
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         'None (area detector data)'
_exptl_absorpt_coefficient_mu    1.144
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.604
_exptl_crystal_density_meas      ?
_exptl_crystal_description       'diamond-shaped plates'
_exptl_crystal_F_000             4056
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.204
_refine_diff_density_min         -0.937
_refine_diff_density_rms         0.079
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.135
_refine_ls_goodness_of_fit_obs   1.140
_refine_ls_hydrogen_treatment    nonref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     654
_refine_ls_number_reflns         7252
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.142
_refine_ls_restrained_S_obs      1.140
_refine_ls_R_factor_all          0.0565
_refine_ls_R_factor_obs          0.0469
_refine_ls_shift/esd_max         0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0234P)^2^+34.6359P] where  P=(Fo^2^+2Fc^2^)/3''
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1112
_refine_ls_wR_factor_obs         0.1024
_reflns_number_observed          6263
_reflns_number_total             7260
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            906727b.txt
_cod_data_source_block           M2Et2O4CHCl3
_cod_depositor_comments
;
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 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0234P)^2^+34.6359P] where P=(Fo^2^+2Fc^2^)/3''
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^(Fo^2^)+(0.0234P)^2^+34.6359P] where P=(Fo^2^+2Fc^2^)/3''.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        8291.6(4)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7115216