Linear Trichromium Complexes with Direct Cr to Cr Contacts. 2. Compounds with Cr3(dipyridylamide)43+ Cores
Rodolphe Clérac; F. Albert Cotton; Lee M. Daniels; Kim R. Dunbar; Carlos A. Murillo; Isabel Pascual; Inorganic Chemistry 39 (2000) 752–756; doi:10.1021/ic991022t

data_4300173
_publ_section_title
;
Linear Trichromium Complexes with Direct Cr to Cr Contacts. 2. Compounds
with Cr3(dipyridylamide)43+ Cores
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              752
_journal_page_last               756
_journal_paper_doi               10.1021/ic991022t
_journal_volume                  39
_journal_year                    2000
_chemical_compound_source        synthesis
_chemical_formula_structural     '[Cr3(N3C10H8)4Cl2][AlCl4].CH2Cl2'
_chemical_formula_sum            'C41 H34 Al Cl8 Cr3 N12'
_chemical_formula_weight         1161.38
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 104.41(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.657(2)
_cell_length_b                   28.350(6)
_cell_length_c                   15.019(3)
_cell_measurement_reflns_used    250
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      18.2
_cell_measurement_theta_min      8.4
_cell_volume                     4807.3(17)
_computing_cell_refinement       MADNES
_computing_data_collection       MADNES
_computing_data_reduction        PROCOR
_computing_molecular_graphics    'XP (Siemens, 1996)'
_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'
_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  0.0595
_diffrn_reflns_av_sigmaI/netI    0.0489
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            13713
_diffrn_reflns_theta_max         22.57
_diffrn_reflns_theta_min         2.31
_diffrn_standards_number         'None (area detector)'
_exptl_absorpt_coefficient_mu    1.175
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.605
_exptl_crystal_density_meas      ?
_exptl_crystal_description       block
_exptl_crystal_F_000             2340
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.530
_refine_diff_density_min         -0.460
_refine_diff_density_rms         0.090
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.117
_refine_ls_goodness_of_fit_obs   1.109
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     604
_refine_ls_number_reflns         5794
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.132
_refine_ls_restrained_S_obs      1.109
_refine_ls_R_factor_all          0.0706
_refine_ls_R_factor_obs          0.0535
_refine_ls_shift/esd_max         0.015
_refine_ls_shift/esd_mean        0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0390P)^2^+22.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1341
_refine_ls_wR_factor_obs         0.1166
_reflns_number_observed          4690
_reflns_number_total             5806
_reflns_observed_criterion       >2sigma(I)
_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^)+(0.0390P)^2^+22.0000P] 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^)+(0.0390P)^2^+22.0000P] 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        4807.4(17)
_cod_database_code               4300173