Syntheses and Properties of Two-Dimensional, Dicationic Nonlinear Optical Chromophores Based on Pyrazinyl Cores
Benjamin J. Coe; John Fielden; Simon P. Foxon; Madeleine Helliwell; Inge Asselberghs; Koen Clays; Kurt De Mey; Bruce S. Brunschwig; Journal of Organic Chemistry 75 (2010) 8550–8563; doi:10.1021/jo101966r

data_4025912
_publ_contact_author_address
;
School of Chemistry, University of Manchester, Oxford Road, Manchester, M13
 9PL, UK.
;
_publ_contact_author_email       b.coe@manchester.ac.uk
_publ_contact_author_name        'Benjamin J. Coe'
_publ_section_title
;
 Syntheses and Properties of Two-Dimensional, Dicationic Nonlinear Optical
 Chromophores Based on Pyrazinyl Cores
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8550
_journal_page_last               8563
_journal_paper_doi               10.1021/jo101966r
_journal_volume                  75
_journal_year                    2010
_chemical_formula_moiety         'C28 H24 N4 O2, C2 H3 N, 2(N O3)'
_chemical_formula_sum            'C30 H27 N7 O8'
_chemical_formula_weight         613.59
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2010-02-18 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.4785(16)
_cell_length_b                   33.557(7)
_cell_length_c                   10.974(2)
_cell_measurement_reflns_used    969
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.68
_cell_measurement_theta_min      2.60
_cell_volume                     2754.0(10)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0783
_diffrn_reflns_av_sigmaI/netI    0.0425
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            9689
_diffrn_reflns_theta_full        19.78
_diffrn_reflns_theta_max         19.78
_diffrn_reflns_theta_min         1.95
_exptl_absorpt_coefficient_mu    0.110
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.588
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.480
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1280
_exptl_crystal_size_max          0.65
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.274
_refine_diff_density_min         -0.405
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.300
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     241
_refine_ls_number_reflns         1275
_refine_ls_number_restraints     287
_refine_ls_restrained_S_all      1.338
_refine_ls_R_factor_all          0.1015
_refine_ls_R_factor_gt           0.0840
_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^)+(0.0305P)^2^+12.0789P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1547
_refine_ls_wR_factor_ref         0.1613
_reflns_number_gt                1061
_reflns_number_total             1275
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo101966r_si_001_5.cif
_cod_data_source_block           '[5][NO3]2.2MeCN'
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_database_code               4025912