Double-helical dinuclear copper(I) and mononuclear copper(II) complexes of a compartmental tetradentate bridging ligand: crystal structures and spectroscopic properties
Fleming, James S.; Mann, Karen L. V.; Couchman, Samantha M.; Jeffery, John C.; McCleverty, Jon A.; Ward, Michael D.; Journal of the Chemical Society, Dalton Transactions  (1998) 2047–; doi:10.1039/a802280a

data_7027847
_publ_section_title
;
 Double-helical dinuclear copper(I) and mononuclear copper(II) complexes
 of a compartmental tetradentate bridging ligand: crystal structures and
 spectroscopic properties
;
_journal_issue                   12
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              2047
_journal_paper_doi               10.1039/a802280a
_journal_year                    1998
_chemical_formula_sum            'C24 H20 N6'
_chemical_formula_weight         392.46
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 102.111(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.1831(10)
_cell_length_b                   24.930(3)
_cell_length_c                   8.1034(7)
_cell_measurement_temperature    173(2)
_cell_volume                     2011.4(4)
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_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  0.0334
_diffrn_reflns_av_sigmaI/netI    0.0268
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            11978
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         1.63
_exptl_absorpt_coefficient_mu    0.081
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.325
_refine_diff_density_min         -0.373
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.112
_refine_ls_goodness_of_fit_obs   1.099
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         4563
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.116
_refine_ls_restrained_S_obs      1.099
_refine_ls_R_factor_all          0.0663
_refine_ls_R_factor_obs          0.0524
_refine_ls_shift/esd_max         0.000
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0596P)^2^+0.9333P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1464
_refine_ls_wR_factor_obs         0.1302
_reflns_number_observed          3753
_reflns_number_total             4566
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            A802280sup1.cif
_cod_data_source_block           coke
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0596P)^2^+0.9333P] 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^)+(0.0596P)^2^+0.9333P] 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        2011.4(3)
_cod_original_sg_symbol_H-M      'P 2(1) /c'
_cod_database_code               7027847