Benign approaches for the synthesis of bis-imine Schiff bases
van den Ancker, Tania R.; Cave, Gareth W. V.; Raston, Colin L.; Green Chemistry 8 (2006) 50–; doi:10.1039/b513289d

data_7203138
_publ_section_title
;
 Benign approaches for the synthesis of bis-imine Schiff bases
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_journal_issue                   1
_journal_name_full               'Green Chemistry'
_journal_page_first              50
_journal_paper_doi               10.1039/b513289d
_journal_volume                  8
_journal_year                    2006
_chemical_formula_moiety         C5NH4CHNC6H10NCHC5NH4
_chemical_formula_sum            'C18 H20 N4'
_chemical_formula_weight         292.38
_chemical_name_common
;(N-Pyridin-4-ylmethylene)(N'-pyridin-2-ylmethylene)
cyclohexane-1,2-diamine
;
_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-97
_cell_angle_alpha                90.00
_cell_angle_beta                 112.752(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   35.5824(14)
_cell_length_b                   5.7010(3)
_cell_length_c                   16.8318(9)
_cell_measurement_temperature    150(2)
_cell_volume                     3148.7(3)
_computing_cell_refinement       'Denzo-SMN (Otwinowski & Minor)'
_computing_data_collection       'Collect (Nonius, 1999)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor)'
_computing_molecular_graphics    'XSeed (Barbour, 2001)'
_computing_publication_material  'local program'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      396(2)
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type
;
Nonius KappaCCD area detector
diffractometer
;
_diffrn_measurement_method
;
Detector set at 30mm from sample with different 2theta offsets
1 degree phi exposures for chi=0 degree settings
1 degree omega exposures for chi=0 degree settings
;
_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  0.1037
_diffrn_reflns_av_sigmaI/netI    0.0978
_diffrn_reflns_limit_h_max       41
_diffrn_reflns_limit_h_min       -46
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            11262
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         2.83
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  0.9925
_exptl_absorpt_correction_T_min  0.9747
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             1248
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.299
_refine_diff_density_min         -0.339
_refine_diff_density_rms         0.072
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     199
_refine_ls_number_reflns         3804
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.1266
_refine_ls_R_factor_gt           0.0665
_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^)+(0.0833P)^2^+1.5120P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1574
_refine_ls_wR_factor_ref         0.1844
_reflns_number_gt                2278
_reflns_number_total             3804
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b513289d.txt
_cod_data_source_block           dipyridine
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7203138