Anion directed assembly of a dinuclear double helicateElectronic supplementary information (ESI) available: Fig. S1: stereoviews showing the packing of 1 in the solid state. Fig. S2: partial 1H NMR spectra of L2 and 1 and their assignment. See http://www.rsc.org/suppdata/cc/b1/b106981k/
Keegan, Jennifer; Kruger, Paul E.; Nieuwenhuyzen, Mark; Oâ€™Brien, John; Martin, Noreen; Chemical Communications  (2001) 2192–; doi:10.1039/b106981k

data_7114873
_publ_section_title
;
 Anion directed assembly of a dinuclear double helicateElectronic
 supplementary information (ESI) available: Fig. S1: stereoviews showing
 the packing of 1 in the solid state. Fig. S2: partial 1H NMR spectra of
 L2 and 1 and their assignment. See
 http://www.rsc.org/suppdata/cc/b1/b106981k/
;
_journal_issue                   21
_journal_name_full               'Chemical Communications'
_journal_page_first              2192
_journal_paper_doi               10.1039/b106981k
_journal_year                    2001
_chemical_formula_sum            'C25 H24 N4'
_chemical_formula_weight         380.48
_chemical_name_systematic
; 
? 
;
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 97.8810(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.5546(8)
_cell_length_b                   8.1809(5)
_cell_length_c                   21.5214(14)
_cell_measurement_reflns_used    1500
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      40
_cell_measurement_theta_min      4
_cell_volume                     2015.1(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.905
_diffrn_measured_fraction_theta_max 0.905
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0604
_diffrn_reflns_av_sigmaI/netI    0.0361
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            22756
_diffrn_reflns_theta_full        28.74
_diffrn_reflns_theta_max         28.74
_diffrn_reflns_theta_min         1.78
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  0.9865
_exptl_absorpt_correction_T_min  0.9646
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.254
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.37
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.291
_refine_diff_density_min         -0.277
_refine_diff_density_rms         0.057
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     358
_refine_ls_number_reflns         4724
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0622
_refine_ls_R_factor_gt           0.0462
_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^)+(0.0707P)^2^+0.3199P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1156
_refine_ls_wR_factor_ref         0.1275
_reflns_number_gt                3620
_reflns_number_total             4724
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b106981k.txt
_cod_data_source_block           rdapym_(L2)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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      P2(1)/c
_cod_database_code               7114873